Compound
L-tryptophan
An essential amino acid that is necessary for normal growth in infants and for nitrogen balance in adults. It is a precursor of indole alkaloids in plants. It is a precursor of serotonin (hence its use as an antidepressant and sleep aid). It can be a precursor to niacin, albeit inefficiently, in mammals.
CHEBI:57912ChEBI
Structure
No depiction stored
Loading the model…
- Class
- Organic compound
- Formula
- C11H12N2O2
- Mass
- 204.229 g/mol
- Charge
- 0
- InChIKey
- QIVBCDIJIAJPQS-VIFPVBQESA-N
- SMILES
- [NH3+][C@@H](Cc1cnc2ccccc12)C(=O)[O-]
- Look it up
- ChEBIPubChemBy InChIKey
Identity from ChEBI, geometry from PubChem. Not evidence.
What it touches on the way
Mechanistic reach
27 entities
27 entities reached.
0 reported hops27 assembled from the scaffold
- SLC7A5ProteinUNIPROT:Q01650transported byInferred only196 paths8 endpoints
- TPH1ProteinUNIPROT:P17752substrate ofInferred only60 paths20 endpoints
- ABCA1ProteinUNIPROT:O95477transported byInferred only47 paths47 endpoints
- SLC7A9ProteinUNIPROT:P82251transported byInferred only45 paths9 endpoints
- SLC7A6ProteinUNIPROT:Q92536transported byInferred only42 paths2 endpoints
- SLC36A4ProteinUNIPROT:Q6YBV0transported byInferred only41 paths41 endpoints
- SLC7A8ProteinUNIPROT:Q9UHI5transported byInferred only36 paths18 endpoints
- TPH2ProteinUNIPROT:Q8IWU9substrate ofInferred only33 paths11 endpoints
- SLC43A1ProteinUNIPROT:O75387transported byInferred only33 paths33 endpoints
- IDO1ProteinUNIPROT:P14902substrate ofInferred only30 paths15 endpoints
- TDO2ProteinUNIPROT:P48775substrate ofInferred only26 paths13 endpoints
- WARS1ProteinUNIPROT:P23381substrate ofInferred only20 paths10 endpoints
Show the remaining 15
- DDCProteinUNIPROT:P20711substrate ofInferred only19 paths19 endpoints
- SLC7A7ProteinUNIPROT:Q9UM01transported byInferred only16 paths16 endpoints
- SLC6A19ProteinUNIPROT:Q695T7transported byInferred only14 paths6 endpoints
- IDO2ProteinUNIPROT:Q6ZQW0substrate ofInferred only14 paths7 endpoints
- SLC43A2ProteinUNIPROT:Q8N370transported byInferred only13 paths13 endpoints
- SLC3A2ProteinUNIPROT:P08195transported byInferred only12 paths12 endpoints
- AADATProteinUNIPROT:Q8N5Z0substrate ofInferred only10 paths10 endpoints
- IL4I1ProteinUNIPROT:Q96RQ9substrate ofInferred only6 paths6 endpoints
- SLC3A1ProteinUNIPROT:Q07837transported byInferred only5 paths1 endpoint
- 5-hydroxy-L-tryptophanCompoundCHEBI:17780converted toInferred only5 paths4 endpoints
- SLC36A1ProteinUNIPROT:Q7Z2H8transported byInferred only4 paths2 endpoints
- WARS2ProteinUNIPROT:Q9UGM6substrate ofInferred only4 paths4 endpoints
- SLC6A14ProteinUNIPROT:Q9UN76transported byInferred only4 paths2 endpoints
- SLCO3A1ProteinUNIPROT:Q9UIG8transported byInferred only3 paths3 endpoints
- CLTRNProteinUNIPROT:Q9HBJ8transported byInferred only1 path1 endpoint
What the reference databases state
Statements
130 statements
130 statements · 2 reference databases · Subject: L-tryptophan · Sources: Human-GEM, Rhea
- L-tryptophan is converted to 5-hydroxy-L-tryptophanCompoundRhea RHEA:84771Inferred only
- 5-hydroxy-L-tryptophan is converted to L-tryptophanCompoundRhea RHEA:84771Inferred only
- beta-carboline is converted to L-tryptophanCompoundHuman-GEM MAR06709Inferred only
- L-tryptophan is converted to beta-carbolineCompoundHuman-GEM MAR06709Inferred only
- L-tryptophan is converted to CHEBI:30249CompoundHuman-GEM MAR04214Inferred only
- L-tryptophan is converted to D-tryptophanCompoundRhea RHEA:63892Inferred only
- L-tryptophan is converted to D-tryptophanCompoundRhea RHEA:60516Inferred only
- D-tryptophan is converted to L-tryptophanCompoundRhea RHEA:60516Inferred only
- D-tryptophan is converted to L-tryptophanCompoundRhea RHEA:63892Inferred only
- indole-3-acetamide is converted to L-tryptophanCompoundRhea RHEA:16165Inferred only
- L-tryptophan is converted to indole-3-acetamideCompoundRhea RHEA:16165Inferred only
- L-tryptophan is converted to indole-3-pyruvateCompoundRhea RHEA:13473Inferred only
Show the remaining 118
- indole-3-pyruvate is converted to L-tryptophanCompoundRhea RHEA:13473Inferred only
- indole-3-pyruvate is converted to L-tryptophanCompoundRhea RHEA:13477Inferred only
- indole-3-pyruvate is converted to L-tryptophanCompoundRhea RHEA:14093Inferred only
- L-tryptophan is converted to indole-3-pyruvateCompoundRhea RHEA:14093Inferred only
- L-tryptophan is converted to indole-3-pyruvateCompoundRhea RHEA:13477Inferred only
- L-tryptophan is converted to indole-3-pyruvateCompoundRhea RHEA:61244Inferred only
- N-formyl-L-kynurenine is converted to L-tryptophanCompoundRhea RHEA:24536Inferred only
- L-tryptophan is converted to N-formyl-L-kynurenineCompoundRhea RHEA:24536Inferred only
- tryptamine is converted to L-tryptophanCompoundRhea RHEA:30339Inferred only
- L-tryptophan is converted to tryptamineCompoundHuman-GEM MAR06707Inferred only
- L-tryptophan is converted to tryptamineCompoundRhea RHEA:30339Inferred only
- L-tryptophan is a substrate of AADATProteinRhea RHEA:69124Inferred only
- L-tryptophan is a substrate of DDCProteinHuman-GEM MAR06707Inferred only
- L-tryptophan is a substrate of IDO1ProteinRhea RHEA:24536Inferred only
- L-tryptophan is a substrate of IDO1ProteinHuman-GEM MAR04214Inferred only
- L-tryptophan is a substrate of IDO2ProteinHuman-GEM MAR04214Inferred only
- L-tryptophan is a substrate of IDO2ProteinRhea RHEA:24536Inferred only
- L-tryptophan is a substrate of IL4I1ProteinRhea RHEA:61244Inferred only
- L-tryptophan is a substrate of TDO2ProteinHuman-GEM MAR04214Inferred only
- L-tryptophan is a substrate of TDO2ProteinRhea RHEA:24536Inferred only
- L-tryptophan is a substrate of TPH1ProteinRhea RHEA:16709Inferred only
- L-tryptophan is a substrate of TPH1ProteinHuman-GEM MAR04537Inferred only
- L-tryptophan is a substrate of TPH1ProteinHuman-GEM MAR02119Inferred only
- L-tryptophan is a substrate of TPH2ProteinRhea RHEA:16709Inferred only
- L-tryptophan is a substrate of TPH2ProteinHuman-GEM MAR04537Inferred only
- L-tryptophan is a substrate of TPH2ProteinHuman-GEM MAR02119Inferred only
- L-tryptophan is a substrate of WARS1ProteinRhea RHEA:24080Inferred only
- L-tryptophan is a substrate of WARS1ProteinHuman-GEM MAR05149Inferred only
- L-tryptophan is a substrate of WARS2ProteinRhea RHEA:24080Inferred only
- L-tryptophan is transported by ABCA1ProteinHuman-GEM MAR05527Inferred only
- L-tryptophan is transported by CLTRNProteinHuman-GEM MAR09907Inferred only
- L-tryptophan is transported by SLC16A10ProteinRhea RHEA:70947Inferred only
- L-tryptophan is transported by SLC16A10ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC36A1ProteinHuman-GEM MAR05061Inferred only
- L-tryptophan is transported by SLC36A1ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC36A4ProteinRhea RHEA:70947Inferred only
- L-tryptophan is transported by SLC3A1ProteinHuman-GEM MAR05928Inferred only
- L-tryptophan is transported by SLC3A1ProteinHuman-GEM MAR05944Inferred only
- L-tryptophan is transported by SLC3A1ProteinHuman-GEM MAR05976Inferred only
- L-tryptophan is transported by SLC3A1ProteinHuman-GEM MAR05912Inferred only
- L-tryptophan is transported by SLC3A1ProteinHuman-GEM MAR05960Inferred only
- L-tryptophan is transported by SLC3A2ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC43A1ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC43A2ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC6A14ProteinRhea RHEA:71335Inferred only
- L-tryptophan is transported by SLC6A14ProteinHuman-GEM MAR07595Inferred only
- L-tryptophan is transported by SLC6A18ProteinHuman-GEM MAR09907Inferred only
- L-tryptophan is transported by SLC6A19ProteinHuman-GEM MAR05317Inferred only
- L-tryptophan is transported by SLC6A19ProteinRhea RHEA:68252Inferred only
- L-tryptophan is transported by SLC7A13ProteinRhea RHEA:76335Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR09736Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC7A5ProteinRhea RHEA:70947Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05462Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05476Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05489Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05501Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05512Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05523Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05524Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05525Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05526Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05527Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05528Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05529Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05530Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05531Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05532Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05591Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05606Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05621Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05636Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05651Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05662Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05663Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05664Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05665Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05666Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05667Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05668Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05669Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05670Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05671Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05672Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05673Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05674Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05675Inferred only
- L-tryptophan is transported by SLC7A5ProteinHuman-GEM MAR05676Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05976Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05928Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05853Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05854Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05621Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05944Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05636Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05676Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05960Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05662Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05682Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05663Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05712Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05664Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05727Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05817Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05852Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05591Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05855Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05912Inferred only
- L-tryptophan is transported by SLC7A6ProteinHuman-GEM MAR05670Inferred only
- L-tryptophan is transported by SLC7A7ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC7A8ProteinHuman-GEM MAR05080Inferred only
- L-tryptophan is transported by SLC7A8ProteinRhea RHEA:71007Inferred only
- L-tryptophan is transported by SLC7A9ProteinHuman-GEM MAR05912Inferred only
- L-tryptophan is transported by SLC7A9ProteinHuman-GEM MAR05944Inferred only
- L-tryptophan is transported by SLC7A9ProteinHuman-GEM MAR05928Inferred only
- L-tryptophan is transported by SLC7A9ProteinHuman-GEM MAR05960Inferred only
- L-tryptophan is transported by SLC7A9ProteinHuman-GEM MAR05976Inferred only
- L-tryptophan is transported by SLCO3A1ProteinRhea RHEA:70947Inferred only
Reactions
228 reactions
L-alanine+L-arginine+L-asparagine+L-aspartate+CHEBI:1307929+a cholesterol ester+a cardiolipin+MAM01602c+L-cysteine+MAM01721n+MAM01722n+L-glutamate(1-)+L-glutamine+glycine+CHEBI:15971+L-isoleucine+L-leucine+MAM02392c+CHEBI:18019+L-methionine+L-phenylalanine+phosphatidic acid+1-phosphatidyl-1D-myo-inositol+CHEBI:17203+MAM02847c+L-seryl residue+a sphingomyelin+CHEBI:16857+L-tryptophan+CHEBI:17895+L-valine+MAM03161cMAM03970c
Reaction pageBlockedBalance undeterminablecytosol, endoplasmic reticulum, nucleus
Human-GEM MAR00021CC BY 4.0Reference data
dioxygen+5,6,7,8-tetrahydrobiopterin+L-tryptophan5-hydroxytryptophan+MAM01698c+water
Reaction pageLeft to rightBalancedEC 1.14.16.4cytosol
Human-GEM MAR02119CC BY 4.0Reference data
dioxygen+L-tryptophanCHEBI:30249
Catalysed by IDO1 or TDO2 or IDO2
Reaction pageLeft to rightBalancedEC 1.13.11.11, 1.13.11.52cytosol
Human-GEM MAR04214CC BY 4.0Reference data
0.505626L-alanine+0.35926L-arginine+0.279425L-asparagine+0.352607L-aspartate+20.704451ATP+0.020401CHEBI:1307929+0.011658a cardiolipin+0.039036CHEBI:17677+0.046571L-cysteine+0.013183CHEBI:16284+0.009442dCTP+0.009898CHEBI:16497+0.013091dTTP+0.275194D-glucopyranose 6-phosphate+0.385872L-glutamate(1-)+0.325996L-glutamine+0.538891glycine+0.036117GTP+20.650823water+0.126406CHEBI:15971+0.286078L-isoleucine+0.545544L-leucine+0.592114CHEBI:18019+0.153018L-methionine+0.1544631,2-diacyl-sn-glycero-3-phosphocholine(1+)+0.055374phosphatidylethanolamine+0.002914MAM02715c+0.259466L-phenylalanine+0.0233151-phosphatidyl-1D-myo-inositol+0.412484CHEBI:17203+0.005829phosphatidyl-L-serine+0.392525L-seryl residue+0.017486a sphingomyelin+0.31269CHEBI:16857+0.013306L-tryptophan+0.159671CHEBI:17895+0.053446UTP+0.352607L-valine20.650823ADP+20.650823proton+20.650823phosphate(3-)+MAM03970c
Reaction pageBlockedBalance undeterminablecytosol, nucleus
Human-GEM MAR04413CC BY 4.0Reference data
dioxygen+5,6,7,8-tetrahydrobiopterin+L-tryptophan4a-hydroxytetrahydrobiopterin+5-hydroxytryptophan
Reaction pageLeft to rightBalancedEC 1.14.16.4cytosol
Human-GEM MAR04537CC BY 4.0Reference data
Transported by SLC36A1
Reaction pageLeft to rightBalancedlysosome, cytosol
Human-GEM MAR05061CC BY 4.0Reference data
Transported by SLC3A2 & SLC7A8 or SLC7A5 or SLC16A10 or SLC36A1 or SLC43A1 or SLC7A7 or SLC43A2
Reaction pageReversibleBalancedcytosol, extracellular space
Human-GEM MAR05080CC BY 4.0Reference data
ATP+MAM03080c+L-tryptophanAMP+Trp-tRNA(Trp)+diphosphate(3-)
Catalysed by WARS1
Reaction pageLeft to rightBalance undeterminableEC 6.1.1.2cytosol
Human-GEM MAR05149CC BY 4.0Reference data
MAM01308c+608ATP+1216water608ADP+63L-alanine+27L-arginine+17L-asparagine+36L-aspartate+35L-cysteine+62L-glutamate(1-)+20L-glutamine+13glycine+619proton+16CHEBI:15971+9L-isoleucine+64L-leucine+60CHEBI:18019+7L-methionine+35L-phenylalanine+608phosphate(3-)+24CHEBI:17203+28L-seryl residue+29CHEBI:16857+2L-tryptophan+19CHEBI:17895+43L-valine
Catalysed by ALB
Reaction pageLeft to rightBalancedcytosol
Human-GEM MAR05258CC BY 4.0Reference data
MAM01308l+608ATP+1216water608ADP+63L-alanine+27L-arginine+17L-asparagine+36L-aspartate+35L-cysteine+62L-glutamate(1-)+20L-glutamine+13glycine+619proton+16CHEBI:15971+9L-isoleucine+64L-leucine+60CHEBI:18019+7L-methionine+35L-phenylalanine+608phosphate(3-)+24CHEBI:17203+28L-seryl residue+29CHEBI:16857+2L-tryptophan+19CHEBI:17895+43L-valine
Catalysed by CTSA or CTSG or LGMN or CTSZ or CTSH or CTSC or CTSD or CTSL or CTSV or CTSK or CTSS or CTSB and 5 more alternatives
Reaction pageLeft to rightBalancedlysosome
Human-GEM MAR05259CC BY 4.0Reference data
MAM01343c+422ATP+844water422ADP+34L-alanine+16L-arginine+19L-asparagine+25L-aspartate+3L-cysteine+29L-glutamate(1-)+17L-glutamine+16glycine+434proton+9CHEBI:15971+20L-isoleucine+59L-leucine+26CHEBI:18019+14L-methionine+25L-phenylalanine+422phosphate(3-)+16CHEBI:17203+30L-seryl residue+29CHEBI:16857+3L-tryptophan+9CHEBI:17895+24L-valine
Reaction pageLeft to rightBalancedcytosol
Human-GEM MAR05260CC BY 4.0Reference data
MAM01343l+422ATP+844water422ADP+34L-alanine+16L-arginine+19L-asparagine+25L-aspartate+3L-cysteine+29L-glutamate(1-)+17L-glutamine+16glycine+434proton+9CHEBI:15971+20L-isoleucine+59L-leucine+26CHEBI:18019+14L-methionine+25L-phenylalanine+422phosphate(3-)+16CHEBI:17203+30L-seryl residue+29CHEBI:16857+3L-tryptophan+9CHEBI:17895+24L-valine
Catalysed by CTSA or CTSG or LGMN or CTSZ or CTSH or CTSC or CTSD or CTSL or CTSV or CTSK or CTSS or CTSB and 5 more alternatives
Reaction pageLeft to rightBalancedlysosome
Human-GEM MAR05261CC BY 4.0Reference data
On the label
Labelled products
364 products
Source: NIH DSLD · Ingredient: L-tryptophan · 364 products · Declared amount per serving: 1.5–2,000 mg (318 products)
347 labels state an amount17 do not
- 1st PhormEssential Amino Acids Watermelon50 mgper 10.7 Gram(s)DSLD:242748
- Absolute NutritionNoPhedra25 mgper 2 Capsule(s)DSLD:206721
- Advanced Nutrition by ZahlerL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:260163
- Alpha LionSuperhuman Sleep Slaughtermelon Watermelon Lemonade1,000 mgper 10 Gram(s)DSLD:325584
- AlterilAlteril All Natural Sleep Aid with L-Tryptophan200 mgper 2 Softgel(s)DSLD:248477
- AlterilAlteril All Natural Sleep Aid with L-Tryptophan200 mgper 2 Soft Gel(s)DSLD:250695
- AlterilAlteril Natural Sleep Aid665 mgper 2 Tablet(s)DSLD:248489
- AlterilAlteril Natural Sleep Aid665 mgper 2 Tablet(s)DSLD:248491
- AN Amazing Nutrition Amazing FormulasL-Tryptophan 1,000 mgL-Tryptophan Note: free-form1,000 mgper 1 Tablet(s)DSLD:251841
- AN Amazing Nutrition Amazing FormulasL-Tryptophan 1000 mgL-Tryptophan Note: free-form1,000 mgper 1 Tablet(s)DSLD:256046
- AN Amazing Nutrition Amazing FormulasL-Tryptophan 500 mgL-Tryptophan Note: free-form500 mgper 1 Capsule(s)DSLD:239337
- AN Amazing Nutrition Amazing FormulasL-Tryptophan 500 mgL-Tryptophan Note: free-form500 mgper 1 Capsule(s)DSLD:251934
Show the remaining 352
- AN Amazing Nutrition Amazing FormulasL-Tryptophan 500 mgFree-form500 mgper 1 Capsule(s)DSLD:314681
- Angry SupplementsGarcinia Cambogia with Melatonin100 mgper 2 Tablet(s)DSLD:294595
- Angry SupplementsSkinny Dreams with Melatonin & Valerian Root100 mgper 2 Tablet(s)DSLD:294605
- Apex EnergeticsNeuroAmino-SP (K-44)40 mgper 1 Vegetarian Capsule(s)DSLD:206621
- ATP ScienceVegan Essential Aminos Cola25 mgper 6 Gram(s)DSLD:241753
- ATP ScienceVegan Essential Aminos Raspberry25 mgper 6 Gram(s)DSLD:241760
- Axe & Sledge SupplementsDozer Honey Lemon Tea50 mgper 5.8 Gram(s)DSLD:254916
- BeachbodyLast Thing75 mgper 3 Capsule(s)DSLD:277784
- Bernard Jensen'sCBD+CBN Sleep Formula with Tryptophan150 mgper 2 Capsule(s)DSLD:318453
- Best NaturalsL-Tryptophan 1000 mgfree-form1,000 mgper 1 Tablet(s)DSLD:270649
- Best NaturalsL-Tryptophan 500 mgfree-form500 mgper 1 Capsule(s)DSLD:269825
- Best NaturalsL-Tryptophan 500 mgfree-form500 mgper 1 Capsule(s)DSLD:270647
- Beverly InternationalDensity500 mgper 5 Tablet(s)DSLD:332818
- BioSchwartzNighttime Stress Relief150 mgper 2 Capsule(s)DSLD:249901
- BiosteelAdvanced Recovery Formula Vanilla385 mgper 36 Gram(s)DSLD:30899
- BioSteelAdvanced Recovery Formula Chocolate386 mgper 36 Gram(s)DSLD:30953
- BioSteelWhey Protein Isolate Chocolate413 mgper 32 Gram(s)DSLD:30990
- BioSteelWhey Protein Isolate Vanilla413 mgper 32 Gram(s)DSLD:30993
- Biotics Research CorporationAmino Sport18 mgper 3 Capsule(s)DSLD:21470
- BIOVEAL-Tryptophan 500 mg1.5 Gram(s)per 3 Vegetarian Capsule(s)DSLD:207444
- BIOVEA Natural FoodsSilk Brown Rice Protein300 mgper 4 TbspDSLD:65970
- BluebonnetL-Tryptophan 500 mgL-Tryptophan Note: free-form500 mgper 1 Capsule(s)DSLD:176706
- BluebonnetL-Tryptophan 500 mgL-Tryptophan Note: free-form500 mgper 1 Capsule(s)DSLD:176707
- BluebonnetL-Tryptophan 500 mgfree form500 mgper 1 Capsule(s)DSLD:279559
- BluebonnetL-Tryptophan 500 mgfree form500 mgper 1 Capsule(s)DSLD:279560
- BluebonnetL-Tryptophan 500 mgfree-form500 mgper 1 Capsule(s)DSLD:317203
- BluebonnetL-Tryptophan 500 mgfree-form500 mgper 1 Capsule(s)DSLD:314820
- Body AttackExtreme Instant EAA Blackberry Flavour240 mgper 14 Gram(s)DSLD:329555
- Body AttackExtreme Instant EAA Cherry Flavour240 mgper 14 Gram(s)DSLD:334227
- Body AttackExtreme Instant EAA Ice Tea Lemon Flavour240 mgper 14 Gram(s)DSLD:334229
- Body AttackExtreme Instant EAA Watermelon Flavour240 mgper 14 Gram(s)DSLD:334233
- Body Attack Sports Nutrition100% Whey Protein ApfelstrudelAmino Acid Profile1.94 Gram(s)per 30 Gram(s)DSLD:329523
- Body KitchenHydrolyzed Protein Collagen Decadent Chocolate0.06 Gram(s)per 22 Gram(s)DSLD:241118
- BodyTech EliteUltimate EAA Fruit Punch10 mgper 14.7 Gram(s)DSLD:208824
- BodyTech EliteUltimate EAA Grape10 mgper 15 Gram(s)DSLD:208744
- Bowmar NutritionMelt Blue Raspberry400 mgper 13 Gram(s)DSLD:246731
- Bowmar NutritionPRE Watermleon375 mgper 10.4 Gram(s)DSLD:295778
- BRI NutritionL-Tryptophan Extra Strength 1500 mg1.5 Gram(s)per 1 Capsule(s)DSLD:326532
- Bricker LabsAmino Supreme38 mgper 5 Tablet(s)DSLD:3182
- Bright BrainCrash + Reboot95 mgper 1 Capsule(s)DSLD:318244
- BronsonAmino Acid ComplexTryptophan Note: Essential Amino Acids12 mgper 1 Tablet(s)DSLD:8461
- Bronson LaboratoriesAll Insurance Vitamin Powder16 mgper 8.76 Gram(s)DSLD:25265
- Bronson LaboratoriesL-Tryptophan 500 mg500 mgper 2 Capsule(s)DSLD:257545
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:252841
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:254828
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:254830
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:254832
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:312283
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:312284
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:312285
- BulkSupplements.comL-Tryptophan500 mgper 500 mgDSLD:312286
- BulkSupplements.comL-Tryptophan (250 mg)500 mgper 2 Capsule(s)DSLD:252843
- BulkSupplements.comL-Tryptophan (250 mg)500 mgper 2 Capsule(s)DSLD:254831
- BulkSupplements.comL-Tryptophan (250 mg)500 mgper 2 Capsule(s)DSLD:312287
- BulkSupplements.comL-Tryptophan 500 mg Capsules500 mgper 1 Capsule(s)DSLD:312927
- California Academy of HealthL-Tryptophan 500 mgL-Tryptophan Note: free-form1,000 mgper 2 Capsule(s)DSLD:206315
- California Academy of HealthWhey Protein Gold Isolate Plus Natural Chocolate Flavor458 mgper 44 Gram(s)DSLD:191162
- California Academy of HealthWhey Protein Gold Isolate Plus Natural Vanilla Flavor471 mgper 6 TbspDSLD:197375
- California NaturalL-Tryptophan500 mgper 1 Capsule(s)DSLD:247760
- Core NutritionalsZZZ Blueberry Lemonade1,000 mgper 13.4 Gram(s)DSLD:298371
- Core NutritionalsZZZ Cherry Bomb1,000 mgper 14.3 Gram(s)DSLD:218278
- Core NutritionalsZZZ Knockout Punch1,000 mgper 13.8 Gram(s)DSLD:185044
- Core NutritionalsZZZ Pineapple Peach1,000 mgper 13.5 Gram(s)DSLD:298370
- Core NutritionalsZZZ Razzzberry Lemonade1,000 mgper 12 Gram(s)DSLD:74297
- DCL-Tryptophan 500 mg(free-form) (1,000 mg)1 Gram(s)per 1 Vcap(s)DSLD:266375
- Doctor's BestBest L-Tryptophan 500 mgAjinomoto L-Tryptophan500 mgper 1 Capsule(s)DSLD:25209
- Doctor's BestBest L-Tryptophan 500 mgAjinomoto L-Tryptophan500 mgper 1 Capsule(s)DSLD:25210
- Doctor's BestBest L-Tryptophan PowderAjinomoto L-Tryptophan500 mgper 0.5 Gram(s)DSLD:25212
- Doctor's BestL-Tryptophan 500 mg500 mgper 1 Veggie Capsule(s)DSLD:302685
- Doctors' PreferredSleep Answer200 mgper 1 Vegan Capsule(s)DSLD:309884
- Double Wood SupplementsEssential Amino Acids37 mgper 3 Capsule(s)DSLD:241772
- Douglas LaboratoriesAmino Gram ForteL-Tryptophan Note: (naturally occurring) (One of 10 essential Amino Acids.)13 mgper 1 Tablet(s)DSLD:57724
- Douglas LaboratoriesL-TryptophanTryptoPure · L-Tryptophan (Form: as TryptoPure)1,000 mcgper 2 Vegetarian Capsule(s)DSLD:244801
- Douglas LaboratoriesUltra Protein Plus Natural Vanilla Bean Flavor180 mgper 31.6 Gram(s)DSLD:30694
- Dr. BergSleep Aid100 mgper 1 Capsule(s)DSLD:257286
- Dr. BergSleep Aid100 mgper 1 Capsule(s)DSLD:292038
- Dr. Clark Research Association Dr. Clark ZentrumEssential Amino Acids 500 mg72 mgper 6 Capsule(s)DSLD:223131
- Dr. Clark Research Association Dr. Clark ZentrumTryptophan 480 mg960 mgper 1 Capsule(s)DSLD:223451
- Dr. Emil Nutrition5-HTP Plus 200 mg20 mgper 2 Capsule(s)DSLD:272247
- Dr. Emil NutritionBedtime Burn60 mgper 2 Capsule(s)DSLD:272251
- EAEnhanced EAA + Blood Orange250 mgper 7.6 Gram(s)DSLD:321428
- EA EnhancedAnabolic IV Tropical250 mgper 7.6 Gram(s)DSLD:223079
- Earthborn ElementsL-Tryptophan450 mgper 2 Capsule(s)DSLD:319618
- EquipPure Pre Blackberry Lemon300 mgper 19.2 Gram(s)DSLD:332846
- Evlution NutritionEAA200010 mgper 3 Capsule(s)DSLD:320073
- Evlution NutritionSleepMode100 mgper 2 Veggie Capsule(s)DSLD:302143
- EvogenAmino K.E.M.38 mgper 5 Tablet(s)DSLD:300193
- FaktritionSleep N Burn Cmplx250 mgper 3 Capsule(s)DSLD:72807
- FINAFLEXEAA Psycho Peach25 mgper 13.4 Gram(s)DSLD:333668
- FitLinePROSHAPE (Amino)2.90%100 mgper 6 Capsule(s)DSLD:321599
- Garden of LifeRaw Organic Fit Chocolate FlavorEssential Amino Acids290 mgper 45.5 Gram(s)DSLD:297638
- GenesaTotal Amino SolutionL-Tryptophan · Tryptophan (Form: as L-Tryptophan)150 mgper 3 Vegi-Capsule(s)DSLD:205996
- Giant Sports InternationalBone Broth plus Greens Natural Chicken Flavoramount not statedper 18 Gram(s)DSLD:304397
- Giant Sports InternationalCollagen Chocolate50 mgper 13 Gram(s)DSLD:265101
- Giant Sports InternationalCollagen Peptides50 mgper 12 Gram(s)DSLD:304396
- Giant Sports InternationalCollagen Vanilla50 mgper 12 Gram(s)DSLD:265104
- Global Product ManagementAlteril All Natural Sleep Aid with L-Tryptophan665 mgper 2 Tablet(s)DSLD:206028
- GNC Beyond RawPrecision Amino Crisp Apple200 mgper 20.6 Gram(s)DSLD:330844
- GNC Beyond RawPrecision Amino Gummy Worm200 mgper 21.83 Gram(s)DSLD:327389
- GNC Beyond RawPrecision Amino Peach Mango Tea200 mgper 21.43 Gram(s)DSLD:330845
- GNC Beyond RawZMAg P.M.100 mgper 1 Light Blue Caplet(s)DSLD:80101
- GNC Preventive NutritionSleep Soundly Advanced500 mgper 1 Caplet(s)DSLD:1850
- GNC Pro PerformanceZinc Magnesium Amino Complex100 mgper 1 Tablet(s)DSLD:69336
- GNC Pro Performance AMPWomen's Advanced Protein Chocolate CupcakeWhey Protein Concentrate · Tryptophan (Form: as Whey Protein concentrate, Whey Protein isolate)250 mgper 26.5 Gram(s)DSLD:70292
- GNC Pro Performance AMPWomen's Advanced Protein Cinnamon BunWhey Protein Concentrate · Tryptophan (Form: as Whey Protein concentrate, Whey Protein isolate)250 mgper 25.3 Gram(s)DSLD:69507
- GNC Pro Performance AMPWomen's Advanced Protein Vanilla Ice CreamWhey Protein Concentrate · Tryptophan (Form: as Whey Protein concentrate, Whey Protein isolate)250 mgper 26.5 Gram(s)DSLD:74605
- Gorilla MindGorilla Mode EAAS Jungle Juice450 mgper 14.1 Gram(s)DSLD:301117
- Gorilla MindGorilla Mode EAAS Lemon Lime450 mgper 14.1 Gram(s)DSLD:274368
- Great Lakes Gelatin Co.Collagen Hydrolysate Apple + Cucumber FlavoredTryptophan Note: Essential Amino Acidsamount not statedper 13 Gram(s)DSLD:230087
- Hard RhinoL-Tryptophan500 mgper 0.5 Gram(s)DSLD:72443
- Hard RhinoL-Tryptophan500 mgper 0.5 Gram(s)DSLD:72643
- HBC ProtocolsL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:11367
- HBC ProtocolsL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:74991
- Healthy SkoopSleep Protein Key Lime Dream500 mgper 27 Gram(s)DSLD:66630
- Healthy SkoopSleep Protein Tirami-Snooze500 mgper 27 Gram(s)DSLD:66637
- HerbadietL-TryptophanFree-Form400 mgper 1 Capsule(s)DSLD:257752
- HerbadietL-Tryptophanfree-form600 mgper 2 Capsule(s)DSLD:293633
- HerbadietL-Tryptophan PowderFree-Form1,000 mgper 1000 mgDSLD:293531
- Herbs SRAMentalSupportFree-form120 mgper 2 Vegetarian Capsule(s)DSLD:316185
- HerbTonicsNight Time Burn20 mgper 1 Capsule(s)DSLD:287060
- HerbTonicsNight Time Fat Burner20 mgper 2 Vegetable Capsule(s)DSLD:259372
- Higher NatureBrighter Day Natural Blackcurrant Flavour220 mgper 1 Tablet(s)DSLD:178216
- HTLTWhey Protein Vanilla Peanut Butter300 mgper 32 Gram(s)DSLD:265454
- Huge NutritionBCAA Kiwi Bluebery200 mgper 19.3 Gram(s)DSLD:299798
- Indiana Botanic GardensL-Tryptophan500 mgper 1 Capsule(s)DSLD:27452
- InfoWars LifeKnock Out15 mgper 1 Capsule(s)DSLD:78283
- Innovus PharmaceuticalsPEVArx100 mgper 1 Capsule(s)DSLD:181987
- IsotonixI-Tryptophan500 mgper 3.3 Gram(s)DSLD:29574
- Isotonix EssentialsTurn Down500 mgper 13.3 Gram(s)DSLD:313419
- Jarrow FormulasL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:212245
- Jarrow FormulasL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:264895
- Jarrow FormulasL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:307642
- Jarrow FormulasSleep Optimizer300 mgper 2 Capsule(s)DSLD:307735
- Jocko FuelJocko Good Night100 mgper 3 Capsule(s)DSLD:327929
- Julian BakeryPegan Thin Seed Protein 20 g Triple Chocolateessential amino acids580 mgper 44 Gram(s)DSLD:296710
- Kaged MuscleSleep SR275 mgper 1 Capsule(s)DSLD:323468
- KionAminos3.5 mgper 7 Capsule(s)DSLD:307219
- KionSleep1,000 mgper 3 Capsule(s)DSLD:307266
- KionSleep Honey Lavender Flavored1,000 mgper 2.1 Gram(s)DSLD:307267
- Klaire LabsL-Tryptophan2,000 mgper 2 Capsule(s)DSLD:322391
- Lee Haney's Nutritional Support SystemsCompetitive MassWhey Protein503 mgper 65 Gram(s)DSLD:12990
- LidtkeGlycoTrol80 mgper 1 Capsule(s)DSLD:215171
- LidtkeGlycoTrol CompleteL-Tryptophan Note: (USP) (TryptoGold)80 mgper 1 Capsule(s)DSLD:215165
- LidtkeGlycoTrol CompleteL-Tryptophan Note: (USP) (TryptoGold)80 mgper 1 Capsule(s)DSLD:257254
- LidtkeGlycoTrol CompleteL-Tryptophan · USP80 mgper 1 Capsule(s)DSLD:257285
- LidtkeGlycoTrol CompleteL-Tryptophan · USP80 mgper 1 Capsule(s)DSLD:261009
- LidtkeL-TryptophanL-Tryptophan Note: (USP) (As certified by the manufacturer.)500 mgper 0.33 tspDSLD:215289
- LidtkeL-TryptophanL-Tryptophan · USP1,050 mgper 1 Capsule(s)DSLD:257272
- LidtkeL-Tryptophan Chewable Delicious Green Apple Flavor100 mgper 2 Tablet(s)DSLD:215297
- LidtkeL-Tryptophan Chewable Delicious Maple Vanilla Flavor100 mgper 1 Tablet(s)DSLD:257200
- LidtkeSlumber-EZ825 mgper 3 Capsule(s)DSLD:257238
- Lidtke MilitaryCombat StressL-Tryptophan · USP1,050 mgper 1 Capsule(s)DSLD:292297
- Lidtke TryptoGOLDL-Tryptophan500 mgper 1 Capsule(s)DSLD:292295
- Lidtke TryptoGOLDL-Tryptophan CompleteL-Tryptophan · USP1,050 mgper 1 Capsule(s)DSLD:257230
- Lidtke TryptoGOLDL-Tryptophan CompleteL-Tryptophan · USP1,050 mgper 1 Capsule(s)DSLD:261021
- Lidtke TryptoGOLDL-Tryptophan, USPL-Tryptophan500 mgper 1 Capsule(s)DSLD:257296
- Lidtke TryptoGOLDL-Tryptophan, USPL-Tryptophan500 mgper 1 Capsule(s)DSLD:261020
- Life ExtensionL-Tryptophan 500 mg500 mgper 1 Vegetarian Capsule(s)DSLD:231998
- Life ExtensionL-Tryptophan 500 mg500 mgper 1 Vegetarian Capsule(s)DSLD:328524
- Life ExtensionOptimized Tryptophan Plus1,000 mgper 3 Vegetarian Capsule(s)DSLD:328618
- Life ExtensionOptimized TryptoPure PlusL-Tryptophan · TryptoPure L-Tryptophan (Form: 1% pure USP pharmaceutical-grade L-Tryptophan)1,000 mgper 1 Vegetarian Capsule(s)DSLD:2511
- LiveGoodEssential Aminos Delicious Fruit Punch Flavor1.5 mgper 10.14 Gram(s)DSLD:339347
- longlifenutriL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:313665
- LuckyVitaminL-Tryptophan 500 mg1,000 mg1 Gram(s)per 1 Veg Capsule(s)DSLD:283213
- LuminiteLuminite Sleep Support200 mgper 1 Capsule(s)DSLD:249956
- MacroLife NaturalsMacroMeal Ultimate ChocolateEssential amino acids170 mgper 45 Gram(s)DSLD:295312
- MacroLife NaturalsMacroMeal Ultimate Chocolateessential amino acids340 mgper 22.5 Gram(s)DSLD:295313
- MacroLife NaturalsMacroMeal Ultimate Chocolate Protein PowderAmino acids, essential amino acidsamount not statedper 45 Gram(s)DSLD:288254
- MacroLife NaturalsMacroMeal Ultimate Chocolate Protein PowderAmino acids, essential amino acidsamount not statedper 22.5 Gram(s)DSLD:293340
- MacroLife NaturalsMacroMeal Ultimate Chocolate Protein Powderessential amino acidsamount not statedper 22.5 Gram(s)DSLD:293341
- MacroLife NaturalsMacroMeal Ultimate Chocolate Protein PowderAmino acids, essential amino acidsamount not statedper 22.5 Gram(s)DSLD:293342
- MacroLife NaturalsMacroMeal Ultimate VanillaAmino acids, essential amino acidsamount not statedper 40 Gram(s)DSLD:292749
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acidsamount not statedper 40 Gram(s)DSLD:288255
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acidsamount not statedper 41 Gram(s)DSLD:288256
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acids412 mgper 40 Gram(s)DSLD:292747
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acidsamount not statedper 40 Gram(s)DSLD:292748
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acidsamount not statedper 41 Gram(s)DSLD:292755
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acids337 mgper 41 Gram(s)DSLD:292756
- MacroLife NaturalsMacroMeal Ultimate Vanilla Protein PowderAmino acids, essential amino acidsamount not statedper 41 Gram(s)DSLD:292757
- Martin Avenue PharmacyAmino Acids FormulaL-Tryptophan Note: naturally occurring13 mgper 1 Tablet(s)DSLD:18766
- Maxi HealthSleep-O-Max200 mgper 1 Capsule(s)DSLD:323814
- MBi NutraceuticalsBio-Aminos47 mgper 2 Capsule(s)DSLD:231378
- Metabolic MaintenanceL-Tryptophan500 mgper 1 Capsule(s)DSLD:24920
- Metabolic MaintenanceL-Tryptophan 500 mgL-Tryptophan500 mgper 1 Capsule(s)DSLD:274069
- MN Morphogen NutritionMorphorem375 mgper 3 Capsule(s)DSLD:212724
- MontiffL-Tryptophan 500 MilligramsL-Tryptophan Note: USP500 mgper 1 Capsule(s)DSLD:42041
- MontiffSuper-Sportsamount not statedper 1 Capsule(s)DSLD:237087
- MontiffSuper-Sports 750 Milligramsamount not statedper 1 Capsule(s)DSLD:293563
- MontiffSuper-Sports 750 Milligramsamount not statedper 1 Capsule(s)DSLD:42099
- MontiffTrypto-Plus 500 MilligramsL-Tryptophan Note: USP500 mgper 1 Capsule(s)DSLD:42093
- MRM NutritionRelax-ALL600 mgper 1 Vegan Capsule(s)DSLD:319108
- Mt. CapraCaproteinTryptophan Note: Essential amino acids42 mgper 10 Gram(s)DSLD:4743
- Mt. CapraDouble Bonded Protein Chocolate70 mgper 33.5 Gram(s)DSLD:19314
- Natural Grocers by Vitamin CottageL-Tryptophan 500 mg500 mgper 1 Vegetarian Capsule(s)DSLD:256858
- Nature's SunshineFree Amino Acids14 mgper 2 Tablet(s)DSLD:255231
- NewtonEverettSomesta500 mgper 1 Vegetarian Capsule(s)DSLD:330119
- Nova NutritionsL-Tryptophan 500 mgL-Tryptophan Note: free-form500 mgper 1 Capsule(s)DSLD:229302
- Novex BiotechOxydrene NAD+ Enhancer220 mgper 2 Vegetable Capsule(s)DSLD:228783
- Novex BiotechOxydrene NAD+ Enhancer220 mgper 2 Vegetable Capsule(s)DSLD:252223
- Novex BiotechOxyDrene NAD+ Enhancer220 mgper 2 Capsule(s)DSLD:277873
- NOWDouble Strength L-Tryptophan 1000 mgL-Tryptophan Note: (free-form) (1,000 mg)1 Gram(s)per 1 Tablet(s)DSLD:204719
- NOWDouble Strength L-Tryptophan 1000 mgfree-form, 1,000 mg1 Gram(s)per 1 Tablet(s)DSLD:314285
- NOWL-Tryptophan 500 mg1 g1,000 mgper 1 Veg Capsule(s)DSLD:314454
- NOWL-Tryptophan 500 mgfree-form, 1000 mg1 Gram(s)per 1 Veg Capsule(s)DSLD:314455
- NOWL-Tryptophan 500 mgL-Tryptophan Note: (free-form) (1,000 mg)1 Gram(s)per 1 Veg Capsule(s)DSLD:55134
- NOWL-Tryptophan 500 mgL-Tryptophan Note: (free-form) (1,000 mg)1 Gram(s)per 1 Veg Capsule(s)DSLD:55135
- NOWL-Tryptophan PowderL-Tryptophan Note: free-form950 mgper 2 tspDSLD:53458
- NOW SportsAmino-9 Essentials88 mgper 3 Tablet(s)DSLD:12882
- NOW SportsAmino-9 Essentials88 mgper 3 Tablet(s)DSLD:12883
- NOW SportsAmino-9 Essentials Powder117 mgper 5.6 Gram(s)DSLD:314237
- NS Natural StacksSerotonin Brain Food1,250 mgper 2 Capsule(s)DSLD:214016
- NS Natural StacksSerotonin Brain Food1,250 mgper 2 Capsule(s)DSLD:274254
- NS Natural StacksSerotonin Brain Food1,250 mgper 2 Capsule(s)DSLD:274271
- NS Natural StacksSerotonin Brain Food1,250 mgper 2 Capsule(s)DSLD:66757
- NusaPureL-Tryptophan 1500 mg1,500 mgper 3 Veggie Capsule(s)DSLD:246730
- NusaPureL-Tryptophan 1500 mg1,500 mgper 3 Veggie Capsule(s)DSLD:307340
- Nutra BioGenesisUltraLean Appetite Control75 mgper 4 Capsule(s)DSLD:323020
- NutraBio100% Pure L-TryptophanL-Tryptophan Note: HPLC500 mgper 0.5 Gram(s)DSLD:213022
- NutraBio100% Pure L-Tryptophan500 mgper 1 Scoop(s)DSLD:51196
- NutraBio100% Pure L-Tryptophan 500 Milligrams500 mgper 1 Vegetable Capsule(s)DSLD:51197
- NutraBio100% Pure L-Tryptophan 500 Milligrams500 mgper 1 Vegetable Capsule(s)DSLD:51199
- NutraBioEAA Pure Blue RaspberryL-Tryptophan Note: HPLC75 mgper 13.1 Gram(s)DSLD:248285
- NutraBioEAA Pure Cherry LimeadeL-Tryptophan Note: HPLC75 mgper 14.36 Gram(s)DSLD:248283
- NutraBioEAA Pure Cherry LimeadeHPLC75 mgper 14.36 Gram(s)DSLD:332130
- NutraBioEAA Pure Dragonfruit CandyL-Tryptophan Note: HPLC75 mgper 13.8 Gram(s)DSLD:248288
- NutraBioEAA Pure Dragonfruit CandyHPLC75 mgper 13.8 Gram(s)DSLD:332131
- NutraBioEAA Pure Grape Berry CrushHPLC75 mgper 14 Gram(s)DSLD:309312
- NutraBioEAA Pure Grape Berry CrushHPLC75 mgper 14 Gram(s)DSLD:332132
- NutraBioEAA Pure Raspberry LemonadeL-Tryptophan Note: HPLC75 mgper 14.03 Gram(s)DSLD:248286
- NutraBioEAA Pure Raspberry LemonadeHPLC75 mgper 14.03 Gram(s)DSLD:332133
- NutraBioEAA Pure Strawberry Lemon BombL-Tryptophan Note: HPLC75 mgper 14.48 Gram(s)DSLD:248293
- NutraChampsDreamrite100 mgper 2 Capsule(s)DSLD:228727
- Nutrex ResearchHIBERN8500 mgper 3 Capsule(s)DSLD:47860
- NutricostL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:306325
- OnnitNew Mood200 mgper 1 Capsule(s)DSLD:273169
- OnnitNew Mood400 mgper 2 Capsule(s)DSLD:288625
- OnnitNew Mood400 mgper 2 Capsule(s)DSLD:295150
- OnnitNew Mood400 mgper 2 Capsule(s)DSLD:64576
- OnnitNight Pack: New Mood200 mgper 1 Capsule(s)DSLD:67388
- Orzax5-HTP Complex100 mgper 2 Capsule(s)DSLD:310477
- Performance LabSleep200 mgper 2 NutriCap(s)DSLD:331705
- PerqueSleep Guard Capsules500 mgper 1 Vegetable Capsule(s)DSLD:241000
- PerqueSleep Guard Capsules500 mgper 1 Vegetable Capsule(s)DSLD:241006
- PrimeMelatonin Plus5 mgper 1 Capsule(s)DSLD:313430
- ProCapsEssential Amino Proteinessential amino acids10 mgper 4 Capsule(s)DSLD:331548
- Progressive Professional from Progressive LaboratoriesTryptoPure 500 mgL-Tryptophan500 mgper 1 Vegetable Capsule(s)DSLD:263247
- Progressive Professional from Progressive LaboratoriesTwilight Time500 mgper 1 Capsule(s)DSLD:263260
- ProSuppsCrash Blue Razz100 mgper 3.6 Gram(s)DSLD:66821
- ProSuppsCrash Fruit Punch100 mgper 3.9 Gram(s)DSLD:66825
- Protocol For Life BalanceGI Guard PM200 mgper 1 Veg Capsule(s)DSLD:73223
- Protocol For Life BalanceL-Tryptophan 1000 mg1g, free-form1,000 mgper 1 Tablet(s)DSLD:326452
- Protocol For Life BalanceL-Tryptophan 1000 mgL-Tryptophan (Alt. Name: 2-Amino-3-Indolylpropanoic Acid) Note: (free-form) (1,000 mg)1 Gram(s)per 1 Tablet(s)DSLD:72895
- Protocol For Life BalanceL-Tryptophan 500 mgfree-form, 1,000 mg1 Gram(s)per 1 Veg Capsule(s)DSLD:326453
- Protocol For Life BalanceL-Tryptophan 500 mg1,000 mg1 Gram(s)per 1 Veg Capsule(s)DSLD:337792
- Protocol For Life BalanceL-Tryptophan 500 mgL-Tryptophan (Alt. Name: 2-Amino-3-Indolylpropanoic Acid) Note: (free-form) (1,000 mg)1 Gram(s)per 1 Veg Capsule(s)DSLD:72864
- Protocol For Life BalanceL-Tryptophan 500 mgL-Tryptophan (Alt. Name: 2-Amino-3-Indolylpropanoic Acid) Note: 1,000 mg1 Gram(s)per 1 Veg Capsule(s)DSLD:77359
- Pure EncapsulationsAmino RepleteL-Tryptophan Note: free-form48 mgper 9 Gram(s)DSLD:184274
- Pure EncapsulationsAmino Repletefree-form60 mgper 4 Gram(s)DSLD:293886
- Pure EncapsulationsAmino-NRL-Tryptophan Note: free-form33 mgper 3 Capsule(s)DSLD:245985
- Pure EncapsulationsAmino-NRFree-form33 mgper 3 Capsule(s)DSLD:293887
- Pure EncapsulationsCognitive AminosFree-Form200 mgper 2 Capsule(s)DSLD:293938
- Pure EncapsulationsEssential Aminos20 mgper 1 Capsule(s)DSLD:261613
- Pure EncapsulationsL-Tryptophan1,000 mgper 2 Capsule(s)DSLD:294000
- Pure EncapsulationsL-Tryptophan1,000 mgper 2 Capsule(s)DSLD:295523
- Pure NootropicsOptimal Sleep Complex400 mgper 1 Capsule(s)DSLD:316599
- Pure PowerEAA + BCAA Orange50 mgper 11.6 Gram(s)DSLD:327158
- PureBulk.comL-Tryptophan500 mgper 500 mgDSLD:23151
- Purely Optimal5-HTP+Complex with Ashwagandha & L-Taurine50 mgper 2 Capsule(s)DSLD:266451
- QualiaQualia Life100 mgper 8 Vegetarian Capsule(s)DSLD:239649
- QualiaQualia Night100 mgper 4 Vegetarian Capsule(s)DSLD:239672
- QualiaQualia Nootropic Energy Triple Berry Flavor250 mgper 2 fl. Oz.DSLD:239683
- RebalanceDream Catcher7.5 mgper 1 Lozenge(s)DSLD:271799
- Redcon1Grunt Blood Orange0.53 Gram(s)per 9.5 Gram(s)DSLD:269167
- Redcon1Grunt Cherry Lime0.53 Gram(s)per 9.5 Gram(s)DSLD:269116
- Redcon1Grunt Pineapple Banana50 mgper 9.5 Gram(s)DSLD:269166
- Redcon1Grunt Tiger's Blood50 mgper 9.5 Gram(s)DSLD:236985
- RelaxiumSleep500 mgper 2 Capsule(s)DSLD:310269
- RelaxiumSleep500 mgper 2 Capsule(s)DSLD:323071
- SeniorLife HealthSleep All Nite Naturals500 mgper 1 Capsule(s)DSLD:2176
- Sheer Strength LabsGood Night Extra Strength Sleep Aid150 mgper 2 Capsule(s)DSLD:261293
- Signature Supplements9 Essential Amino Acids22 mgper 2 Capsule(s)DSLD:338587
- Source NaturalsL-Tryptophan1.5 Gram(s)per 1 Capsule(s)DSLD:73847
- Source NaturalsL-Tryptophan 1,000 mg2 Gram(s)per 1 Tablet(s)DSLD:274811
- Source NaturalsL-Tryptophan 500 mg1.5 gper 1 Capsule(s)DSLD:273573
- Source NaturalsL-Tryptophan 500 mg1.5 Gram(s)per 1 Tablet(s)DSLD:274809
- Source NaturalsL-Tryptophan 500 mg1.5 Gram(s)per 1 Tablet(s)DSLD:274813
- Source NaturalsL-Tryptophan 500 mg1.5 Gram(s)per 3 Tablet(s)DSLD:295956
- Source NaturalsL-Tryptophan 500 mg1.5 Gram(s)per 0.5 Gram(s)DSLD:295957
- Source NaturalsL-Tryptophan 500 mg1.5 gper 1 Capsule(s)DSLD:72579
- SteelADABolic Candy Blissamount not statedper 37 Gram(s)DSLD:277714
- SteelBCAA + EAA300 mgper 10 Gram(s)DSLD:266712
- SuperiorLabsL-Tryptophan500 mgper 1 Vegetarian Capsule(s)DSLD:227915
- SuperiorLabsL-Tryptophan500 mgper 1 Capsule(s)DSLD:338186
- SuperiorLabsMelatonin Complex50 mgper 1 Vegetarian Capsule(s)DSLD:227942
- SuperSmartL-Tryptophan 1000 mg1,000 mgper 1 Tablet(s)DSLD:285312
- SuperSmartNatural Sleep Formula700 mgper 1 Tablet(s)DSLD:332465
- SwansonL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:203138
- SwansonL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:322733
- Swanson UltraL-Tryptophan 500 mgL-Tryptophan · Ajinomoto TryptoPure L-Tryptophan (Form: 100% pure pharmaceutical grade L-Tryptophan)500 mgper 1 Veggie Capsule(s)DSLD:180725
- SwolverineZMT500 mgper 6 Vegetarian Capsule(s)DSLD:321082
- SyntraxMatrix 1.0 Milk ChocolateTryptophan Note: Essential Amino Acid1.9 Gram(s)per 31 Gram(s)DSLD:228586
- Systemic FormulasAccell Therapeutic120 mgper 30 Gram(s)DSLD:22284
- Systemic FormulaseNRG LQ Quantum Cellular ATP Energyamount not statedper 0.5 Dropper(s)DSLD:22506
- Systemic Formulas Bio NutrimentPro Nutro Protein3 mgper 1 Capsule(s)DSLD:22040
- Terra OriginHealthy Sleep & Wake150 mgper 1 Capsule(s)DSLD:313246
- Terra OriginSleep150 mgper 1 Capsule(s)DSLD:248031
- The Vitamin ShoppeL-Tryptophan 500 mg500 mgper 1 Veggie Capsule(s)DSLD:183563
- The Vitamin ShoppeL-Tryptophan 500 mg500 mgper 1 Veggie Capsule(s)DSLD:183565
- The Vitamin ShoppeL-Trytophan 1000 mg1,000 mgper 1 Tablet(s)DSLD:183571
- ThorneAmino Complex Berry Flavored20 mgper 7.6 Gram(s)DSLD:328818
- ThorneAmino Complex Berry Flavored20 mgper 7.6 Gram(s)DSLD:337851
- ThorneAmino Complex Lemon Flavored20 mgper 7.7 Gram(s)DSLD:323098
- ThorneAmino Complex Lemon Flavored20 mgper 7.7 Gram(s)DSLD:336309
- TriVitaLeanology ChocolateTryptophan Note: Essential Amino Acids (amount in 30.3g of powder)158 mgper 30.3 Gram(s)DSLD:33082
- Troponin NutritionField Rations Orange Pineapple50 mgper 43 Gram(s)DSLD:334321
- TruehopeAminopowerplusL-Tryptophan Hydrochloride · Tryptophan (Form: as L-tryptophan hydrochloride)84 mgper 4 Veggie Capsule(s)DSLD:32348
- Twinlab100% Whey Protein Fuel Chocolate Surge560 mgper 35 Gram(s)DSLD:4265
- Twinlab100% Whey Protein Fuel Strawberry Smash560 mgper 34 Gram(s)DSLD:3623
- Twinlab100% Whey Protein Fuel Vanilla Slam560 mgper 33 Gram(s)DSLD:3624
- TwinlabAmino Fuel 100072 mgper 4 Tablet(s)DSLD:3625
- TwinlabAmino Fuel 100072 mgper 4 Tablet(s)DSLD:73907
- UniversalAmino 100050 mgper 5 Capsule(s)DSLD:64048
- UniversalAmino 1900100 mgper 4 Tablet(s)DSLD:246059
- UniversalAmino 1900100 mgper 4 Tablet(s)DSLD:274619
- UniversalAmino 1900100 mgper 4 Tablet(s)DSLD:64049
- UniversalAmino 225060 mgper 2 Tablet(s)DSLD:37728
- UniversalAmino 225060 mgper 2 Tablet(s)DSLD:64054
- UniversalAmino 225060 mgper 2 Tablet(s)DSLD:64059
- UniversalAmino 2700105 mgper 3 Tablet(s)DSLD:37770
- UniversalAmino 2700105 mgper 3 Tablet(s)DSLD:65618
- UniversalGH Stack Grape Flavor250 mgper 2 Teaspoon(s)DSLD:37744
- UniversalUniversal Amino 2700100 mgper 3 Tablet(s)DSLD:247363
- Universal NutritionUniversal Amino 2700100 mgper 3 Tablet(s)DSLD:274726
- Vera's FormulationsUpLift Pro25 mgper 1 Capsule(s)DSLD:256597
- Vital PerformanceSleep Orange Vanilla50 mgper 19 Gram(s)DSLD:246493
- Vital ProteinsVitality Immune Booster Clementine50 mgper 15 Gram(s)DSLD:254297
- Vital ProteinsVitality Immune Booster Clementine50 mgper 15 Gram(s)DSLD:302836
- Vital ProteinsVitality Immune Booster Grape Citrus50 mgper 13 Gram(s)DSLD:302874
- VitalBulkL-Tryptophan 500 mg500 mgper 1 Capsule(s)DSLD:258742
- Vitamin Research ProductsL-Tryptophan2 Gram(s)per 2 Capsule(s)DSLD:34051
- VMI SportsAminogex Ultra Miami Vice75 mgper 17.2 Gram(s)DSLD:257498
- VMI SportsAminogex Ultra Red Fruit Candy75 mgper 17.2 Gram(s)DSLD:257499
- VMI SportsAminogex Ultra Tropical Mango75 mgper 17.2 Gram(s)DSLD:257500
- VMI SportsAminogex Ultra Watermelon75 mgper 17.2 Gram(s)DSLD:257497
- WellthySleep100 mgper 2 Capsule(s)DSLD:276531
- XYMOGENXymoBolX Natural Lemon Flavor2.5 mgper 6.8 Gram(s)DSLD:335572
- youtheorySleep250 mgper 4.34 Gram(s)DSLD:257015
- youtheorySleep Nighttime Powder250 mgper 5.73 Gram(s)DSLD:271978
- youtheorySleep Nighttime Powder250 mgper 5.73 Gram(s)DSLD:272057
- youtheorySleep Nighttime Powder1,000 mgper 5.73 Gram(s)DSLD:69102
- ZahlerMasterMind1,400 mgper 4 Tablet(s)DSLD:33306
- ZHOUDriftoff100 mgper 2 Veggie Capsule(s)DSLD:71370
Label record: NIH Office of Dietary Supplements · CC0
Where it reaches
10 systems, 26 regions, 75 tissues, 151 transporter routes — routes, not measurements: transporters known to carry L-tryptophan are expressed there, and no source reports it arriving.
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Other names
3 names
Resolves to: L-tryptophan
- Also called
- (2S)-2-ammonio-3-(1H-indol-3-yl)propanoatetryptophan
- Systematic name
- (2S)-2-azaniumyl-3-(1H-indol-3-yl)propanoate