General Dosage
1 g three times daily, 30 minutes before each main meal with a full glass of water
Maximum dose: 4 g/day; excessive intake may cause GI obstruction if taken without adequate water
Glucomannan Dosage Guide
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Dosage Recommendations
General recommendation: 1 g three times daily, 30 minutes before each main meal with a full glass of water
Timing: Take 30-60 minutes before meals with at least 250 mL (8 oz) of water
Dosage by Condition
Weight loss
3 g/day (1 g before each meal)Strong
Cholesterol reduction
3-4 g/dayModerate
Blood sugar control
3-4 g/day with mealsModerate
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Weight loss | 3 g/day (1 g before each meal) | Strong |
| Cholesterol reduction | 3-4 g/day | Moderate |
| Blood sugar control | 3-4 g/day with meals | Moderate |
Upper limit: 4 g/day; excessive intake may cause GI obstruction if taken without adequate water
Timing & Absorption
Take 30-60 minutes before meals with at least 250 mL (8 oz) of water
Can be taken with or without food.
References
- Keithley J, Swanson B (2005). Glucomannan and obesity: a critical review. Alternative Therapies in Health and Medicine. PubMed
- EFSA Panel on Dietetic Products, Nutrition and Allergies (2010). Scientific Opinion on the substantiation of health claims related to konjac mannan (glucomannan) and reduction of body weight. EFSA Journal. DOI