Compound
isomalt
A diastereoisomeric mixture composed of 1-O-α-D-glucopyranosyl-D-mannitol dihydrate and 6-O-α-D-glucopyranosyl-D-glucitol in a 1:1 ratio. It is used in the food industry as a sugar substitute and in the pharmaceutical industry as a tabletting excipient.
Definition from ChEBI (CHEBI:150326), read 2026-09-23. CC BY 4.0.
Structure
ChEBI: class, no single structure
- Class
- Organic compound
- Formula
- C12H24O11
- Mass
- 344.313 g/mol
- Charge
- 0
- Look it up
- ChEBI
Identity from ChEBI. Not evidence.
What the reference databases state
Statements
2 statements
2 statements · 1 reference database · Subject: isomalt · Sources: ChEBI
- isomalt is converted to 1-O-alpha-D-glucopyranosyl-D-mannitol dihydrateCompoundChEBI CHEBI:150326Inferred only
- isomalt is converted to 6-O-alpha-D-glucopyranosyl-D-glucitolCompoundChEBI CHEBI:150326Inferred only
On the label
Labelled products
1 product
Source: NIH DSLD · Ingredient: isomalt · 1 product · Declared amount per serving: 1–1 Gram(s) (1 products)
1 label states an amount0 do not
- CentrumCentrum Fresh & Fruity Chewables Adults 50+ Mixed Berry1 Gram(s)per 1 Tablet(s)DSLD:257188
Label record: NIH Office of Dietary Supplements · CC0
Registered, and not reported
- Source
- ClinicalTrials.gov
- Intervention
- isomalt
- Status
- Completed, terminated or suspended
- Results posted
- No
Trials without posted results
10 trials
10 registered trials without posted results · Overdue (FDAAA 801): 10
10 past the window0 within it, or no actual date
- NCT04751669completed2023-10-26a university or hospitalpast the reporting window
- NCT05919134completed2023-09-20a university or hospitalpast the reporting window
- NCT05727436completed2023-05-31a university or hospitalpast the reporting window
- NCT07789171completed2021-11-29a university or hospitalpast the reporting window
- NCT04667884completed2021-05-22a university or hospitalpast the reporting window
- NCT04554342completed2021-02-10a university or hospitalpast the reporting window
- NCT04642482completed2019-12-26a university or hospitalpast the reporting window
- NCT02569697completed2016-05a university or hospitalpast the reporting window
- NCT01719107completed2015-12a university or hospitalpast the reporting window
- NCT02476864completed2015-12industrypast the reporting window
Papers screened
20 papers
- Compound
- isomalt
- Screened
- 20
- Admitted
- 0
- Discarded
- 9
- Not read
- 11
Discarded: the wrong intervention5 papers
- PMID:19266906no claim extracted — subject_is_the_outcome2026-09-29
- PMID:27321131no claim extracted — reagent_not_exposure2026-09-29
- PMID:28024614no claim extracted — reagent_not_exposure2026-09-29
- NCT01877421intervention×1 — no declared intervention names isomalt2026-09-21
- NCT03568812intervention×1 — no declared intervention names isomalt2026-09-21
Discarded: no comparator3 papers
- PMID:12270622no claim extracted — comparator_not_absence2026-10-12
- PMID:16197583no claim extracted — comparator_not_absence2026-10-12
- PMID:8617186no claim extracted — comparator_not_absence2026-10-12
Discarded: an endpoint this vocabulary does not hold1 paper
- PMID:18157558no claim extracted — no_outcome_node — measured: enamel lesion mineral loss / remineralization, transversal microradiography | enamel lesion mineral loss / remineralization, transversal microradiography (bovine enamel, in vitro pH-cycling and in situ)2026-10-12
Not read yet11 papers
- PMID:164419152026-09-01
- PMID:17829282026-09-01
- PMID:21381132026-09-01
- PMID:23120112026-09-01
- PMID:23582502026-09-01
- PMID:26064002026-09-01
- PMID:63819592026-09-01
- PMID:78101772026-09-01
- PMID:84900002026-09-01
- PMID:84900012026-09-01
- PMID:89096972026-09-01
Measured, not recorded
- Compound
- isomalt
- Endpoints measured
- 41 endpoints
- Recorded as a finding
- No
Show what was measured
HCT pharmacokinetic parameters (Cmax, tmax, t1/2, AUC0-24 h)
no effect, p = 0.05
were not significantly different (P>0.05; two-way ANOVA) in comparison with the conventional tablet
PMID:12270622 · one of two readings recorded this
hydrochlorothiazide plasma Cmax, tmax, t1/2, AUC(0-24 h) from isomalt-based moulded tablets versus conventional tablet (isomalt is the tablet matrix, not the dosed drug)
no effect, pharmacokinetic parameters not significantly different from conventional tablet
Not recorded as a finding: the comparison was against another active treatment
Moulded tablets had a high relative bioavailability (F(rel)) as the pharmacokinetic parameters (C(max), t(max), t(1/2), AUC(0-->24 h)) determined from HCT plasma concentration versus time profiles were not significantly different (P>0.05; two-way ANOVA) in comparison with the conventional tablet.
PMID:12270622 · one of two readings recorded this
hydrochlorothiazide plasma Cmax, tmax, t1/2, AUC(0-24h) and relative bioavailability from isomalt-based moulded tablets versus a conventional tablet
no effect, PK parameters not significantly different from conventional tablet
Not recorded as a finding: the comparison was against another active treatment
Moulded tablets had a high relative bioavailability (F(rel)) as the pharmacokinetic parameters (C(max), t(max), t(1/2), AUC(0-->24 h)) determined from HCT plasma concentration versus time profiles were not significantly different (P>0.05; two-way ANOVA) in comparison with the conventional tablet.
PMID:12270622 · one of two readings recorded this
relative bioavailability of HCT
no effect
The relative bioavailability of the moulded tablet administered as a lozenge and as an oral tablet was 106.2+/-30.9% and 89.4+/-25.9%, respectively, in relation to the conventional tablet formulation
PMID:12270622 · one of two readings recorded this
relative bioavailability of HCT
no effect
The relative bioavailability of the moulded tablet administered as a lozenge and as an oral tablet was 106.2+/-30.9% and 89.4+/-25.9%, respectively, in relation to the conventional tablet formulation
PMID:12270622 · one of two readings recorded this
stool frequency
increases, p = 0.006
Stool frequency was moderately increased in the isomalt phase (P=0.006)
PMID:16197583 · one of two readings recorded this
apolipoprotein A-1
decreases, p = 0.03
apart from lower apo A-1 (P=0.03) for all subjects
PMID:16197583 · one of two readings recorded this
blood lipids
no effect
Blood lipids were comparable in both phases, especially in volunteers with hyperlipidaemia
PMID:16197583 · one of two readings recorded this
calcium and phosphate homeostasis (urine and stool excretion)
no effect
Ca and phosphate homeostasis was not affected
PMID:16197583 · one of two readings recorded this
remnant-like particles, oxidised LDL, NEFA, fructosamine and leptin
no effect
Remnant-like particles, oxidised LDL, NEFA, fructosamine and leptin were comparable and not influenced by isomalt
PMID:16197583 · one of two readings recorded this
stool consistency and stool water
no effect
without changes in stool consistency and stool water
PMID:16197583 · one of two readings recorded this
stool frequency, blood lipids, urinary and stool Ca and phosphate, mean transit time in healthy volunteers
increases, stool frequency moderately increased in the isomalt phase, p = 0.006, n = 19
Not recorded as a finding: the comparison was against another active treatment
Stool frequency was moderately increased in the isomalt phase (P=0.006) without changes in stool consistency and stool water.
PMID:16197583 · one of two readings recorded this
stool frequency, stool consistency, blood lipids, apo A-1, Ca and phosphate excretion
increases, Stool frequency was moderately increased in the isomalt phase, p = 0.006
Not recorded as a finding: the comparison was against another active treatment
Stool frequency was moderately increased in the isomalt phase (P=0.006) without changes in stool consistency and stool water.
PMID:16197583 · one of two readings recorded this
enamel de- and remineralization
decreases
continuous presence of 10% Isomalt (in re- or demineralizing solutions) inhibited both de- and/or remineralization
PMID:18157558 · one of two readings recorded this
enamel remineralization
increases
while 5-min rinses with 10% Isomalt gave slightly increased remineralization, continuous presence of 10% Isomalt (in re- or demineralizing solutions) inhibited both de- and/or remineralization
PMID:18157558 · one of two readings recorded this
enamel remineralization
increases
In in situ study, remineralization enhancement during short Isomalt treatments was confirmed
PMID:18157558 · one of two readings recorded this
overall mineral loss
decreases
This lead to significantly smaller overall mineral loss when Isomalt was added during demineralization
PMID:18157558 · one of two readings recorded this
isomalt production yield via enzymatic conversion of isomaltulose
increases
From HPLC analysis it was showed for the first time that the enzyme could convert substrate isomaltulose to the specific products, GPM and GPS.
PMID:19266906 · one of two readings recorded this
mannitol dehydrogenase specific enzymatic activity with fructose as substrate
63 U mg-1 protein
Results from activity assay with fructose as substrate also showed that in this strain the specific activity of 63 U mg(-1) protein monitored for the enzyme, the record not reported before.
PMID:19266906 · one of two readings recorded this
MDH enzyme expression level across E. coli strains
increases
The results showed that among the strains, BL21 (DE3) plysS exhibited the maximum expression level of MDH(mannitol dehydrogenase) (11 mg L(-1)).
PMID:19266906 · one of two readings recorded this
MDH substrate specificity and conversion of isomaltulose to GPM and GPS by HPLC
increases
From HPLC analysis it was showed for the first time that the enzyme could convert substrate isomaltulose to the specific products, GPM and GPS.
PMID:19266906 · one of two readings recorded this
amorphous-state retention during storage
no effect
All powders remained amorphous during 2-3 weeks.
PMID:27321131 · one of two readings recorded this
glass transition temperature and processability (stickiness)
decreases
Isomalt was the most problematic, because it had the lowest Tg and became sticky very easily, therefore process parameters needed to be precisely balanced.
PMID:27321131 · one of two readings recorded this
solid-state stability of spray-dried amorphous isomalt as a protein-stabilizing pharmaceutical excipient (amorphous-state retention, glass transition temperature, powder stickiness), compared to sucrose, trehalose and melibiose
decreases
Not recorded as a finding: the compound was a reagent, not an exposure
Isomalt was the most problematic, because it had the lowest Tg and became sticky very easily, therefore process parameters needed to be precisely balanced.
PMID:27321131 · one of two readings recorded this
spray-drying yield and solid-state stability of amorphous isomalt powder
Isomalt was the most problematic, because it had the lowest Tg and became sticky very easily, therefore process parameters needed to be precisely balanced.
PMID:27321131 · one of two readings recorded this
dissolution rate of celecoxib in 0.25% SDS and 0.04M Na3PO4 dissolution media
increases
Similar results have been shown for dissolution studies.
PMID:28024614 · one of two readings recorded this
dissolution rate of celecoxib in solid dispersion
increases
Similar results have been shown for dissolution studies.
PMID:28024614 · one of two readings recorded this
saturation solubility and dissolution rate of celecoxib formulated as a spray-dried solid dispersion with Isomalt and PVP K30 as hydrophilic carriers
increases, 20-30 folds higher saturation solubility than raw celecoxib
Not recorded as a finding: the compound was a reagent, not an exposure
The results showed that the saturation solubility of celecoxib in solid dispersion samples is 20-30 folds higher than raw celecoxib.
PMID:28024614 · one of two readings recorded this
saturation solubility and dissolution rate of celecoxib in isomalt/PVP K30 solid dispersion formulations
increases, 20-30 fold higher saturation solubility than raw celecoxib
Not recorded as a finding: the compound was a reagent, not an exposure
The results showed that the saturation solubility of celecoxib in solid dispersion samples is 20-30 folds higher than raw celecoxib.
PMID:28024614 · one of two readings recorded this
saturation solubility of celecoxib in isomalt/PVP solid dispersions
increases, 20-30 fold higher saturation solubility than raw celecoxib
The results showed that the saturation solubility of celecoxib in solid dispersion samples is 20-30 folds higher than raw celecoxib.
PMID:28024614 · one of two readings recorded this
saturation solubility of celecoxib
increases, 20-30 folds higher saturation solubility than raw celecoxib
The results showed that the saturation solubility of celecoxib in solid dispersion samples is 20-30 folds higher than raw celecoxib.
PMID:28024614 · one of two readings recorded this
borborygms (mild)
increases, p = 0.01
A reduction in isomalt to 30 g was marked by increased tolerance with evidence of only mild borborygms (P <0.01)
PMID:8617186 · one of two readings recorded this
flatulence, borborygms and colic (mild)
increases, p = 0.01
Ingestion of 40 g maltitol caused less intolerance than 40 g isomalt, with evidence of only flatulence, borborygms and colic (P <0.01)
PMID:8617186 · one of two readings recorded this
flatulence, colic and laxation (mild)
increases, p = 0.05
mild flatulence, colic, and laxation (P <0.05)
PMID:8617186 · one of two readings recorded this
incidence and severity of all GI symptoms (flatulence, borborygms, colic, motion frequency, loose stools)
increases, p = 0.01
The ingestion of 30 g or 40 g lactitol resulted in a significant increase in the incidence and severity of all symptoms examined compared to reactions after the consumption of standard sucrose-containing chocolate (P <0.01)
PMID:8617186 · one of two readings recorded this
incidence and severity of flatulence, borborygms, colic, motion frequency and loose stools after 30 g or 40 g polyol in milk chocolate, self-reported
increases, 40 g isomalt increased incidence of all symptoms including mild laxation versus sucrose chocolate, p = 0.01, n = 59
Not recorded as a finding: the comparison was against another active treatment
Similarly, 40 g isomalt led to an increased incidence of all symptoms, including mild laxation (P <0.01), but unlike lactitol none was rated as being severe.
PMID:8617186 · one of two readings recorded this
incidence and severity of flatulence, borborygms, colic, motion frequency and loose stools after isomalt, lactitol or maltitol in milk chocolate versus sucrose chocolate
increases, 40 g isomalt increased incidence of all symptoms including mild laxation versus sucrose chocolate, p = 0.01, n = 59
Not recorded as a finding: the comparison was against another active treatment
Similarly, 40 g isomalt led to an increased incidence of all symptoms, including mild laxation (P <0.01), but unlike lactitol none was rated as being severe.
PMID:8617186 · one of two readings recorded this
incidence of all GI symptoms including mild laxation
increases, p = 0.01
40 g isomalt led to an increased incidence of all symptoms, including mild laxation (P <0.01)
PMID:8617186 · one of two readings recorded this
laxative effect
no effect, p = 0.32
Maltitol did not have any laxative effect when ingested at either 30 g (P = 0.32) or 40 g (P = 0.13) per day
PMID:8617186 · one of two readings recorded this
laxative effect
no effect, p = 0.13
Maltitol did not have any laxative effect when ingested at either 30 g (P = 0.32) or 40 g (P = 0.13) per day
PMID:8617186 · one of two readings recorded this
motion frequency
no effect, p = 0.35
with no increase in motion frequency (P <0.35)
PMID:8617186 · one of two readings recorded this
Other names
12 names
Resolves to: isomalt
- Also called
- 6-O-alpha-D-glucopyranosyl-D-glucitol mixed with 1-O-alpha-D-glucopyranosyl-D-mannitol6-O-α-D-glucopyranosyl-D-glucitol mixed with 1-O-α-D-glucopyranosyl-D-mannitolE 953E953hydrogenated isomaltulosepalatinitpalatinitol
- Systematic name
- 6-O-alpha-D-glucopyranosyl-D-glucitol--1-O-alpha-D-glucopyranosyl-D-mannitol--water (1/1/2)6-O-α-D-glucopyranosyl-D-glucitol—1-O-α-D-glucopyranosyl-D-mannitol—water (1/1/2)
- Sold as
- C* PharmIsoMaltidexGalenIQIsoMaltidex