Glucomannan
herbs
Glucomannan is a natural soluble dietary fibre derived from the konjac plant root. It absorbs water in the digestive tract to form a viscous compound, promoting satiety, supporting digestive health, and helping regulate blood sugar and cholesterol levels.
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Benefits
Dosage
Typical Dose
3-5 grams daily, divided into doses
Upper Limit
15 grams daily (split into 3-5 gram portions)
Timing
30 minutes before meals with 200-250 ml of water; never take dry
Forms & Bioavailability
Powder
95%
Capsules
90%
Tablets
85%
Side Effects
Interactions
Research Summary
Multiple randomised controlled trials demonstrate glucomannan's efficacy for weight loss and appetite suppression. Studies show significant improvements in cholesterol profiles and triglycerides. Evidence supports blood sugar regulation in both diabetic and non-diabetic populations. Research indicates prebiotic benefits supporting beneficial gut microbiota. Generally regarded as safe by regulatory authorities when consumed with adequate hydration.
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The Bottom Line on Glucomannan
Glucomannan is well-researched with strong evidence supporting its primary benefits.It is most commonly used for promotes weight management by increasing feelings of fullness and reducing appetite and supports healthy cholesterol levels by binding to cholesterol particles in the digestive tract. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Glucomannan
See how Glucomannan can help with specific health goals: