Glucomannan (Konjac Root Fiber)
Absorbs up to 50x its weight in water, creating strong satiety — supports weight loss, blood sugar regulation, and cholesterol reduction.
Glucomannan is a water-soluble dietary fiber extracted from the root of the konjac plant (Amorphophallus konjac). It has an exceptional ability to absorb water - up to 50 times its weight - forming a thick gel in the stomach. This creates a strong sense of fullness, making it one of the most effective natural appetite suppressants. It also helps lower cholesterol and blood sugar by slowing nutrient absorption.
Absorbs water to form viscous gel
Slows carb and fat absorption
Feeds beneficial gut bacteria
How Glucomannan works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
1g three times daily before meals (3g total)
Loading: Not required; consistent pre-meal dosing is key
Can be taken without food
| Form | Type |
|---|---|
| 💊Capsules (safest) | Recommended |
| 🧪Powder (must mix thoroughly) | Alternative |
| 💊Konjac noodles (food form) | Alternative |
Capsules are safest to avoid choking. If using powder, mix well in water and drink immediately before it gels. Never take dry.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: MUST be taken with plenty of water. Taking before meals creates satiety. Never take dry or with insufficient liquid.
Strong feeling of fullness
Modest but consistent weight reduction
Lowered LDL and total cholesterol
Can expand and block throat if not taken properly
One of the few supplements with proven weight loss effects
May enhance blood sugar lowering; monitor
May reduce absorption; take medications 1 hour before or 4 hours after
Tip: Start with lower dose; increase gradually
Tip: Reduce dose
Tip: ALWAYS take with plenty of water; never take dry
Top studies from 39+ peer-reviewed papers
Sood N et al. • The American journal of clinical nutrition (2008)
“Glucomannan appears to beneficially affect total cholesterol, LDL cholesterol, triglycerides, body weight, and FBG, but not HDL cholesterol or BP.”
Pokushalov E et al. • Nutrients (2024)
“Dietary supplementation with glucomannan, inulin, and psyllium effectively promotes weight loss and improves body composition in individuals with obesity, particularly those with specific genetic polymorphisms.”
Shahinfar H et al. • Pharmacological research (2023)
“We conducted random-effects network meta-analysis with a Frequentist framework to estimate mean difference [MD] and 95% confidence interval [CI] of the effect of nutraceuticals on weight loss.”
Zhang Z et al. • Nutrients (2023)
“Our analysis indicates that glucomannan is an effective nutritional intervention for type II diabetes.”
Ho HVT et al. • The American journal of clinical nutrition (2017)
“This study was registered at clinicaltrials.gov as NCT02068248.”
What would you like to do next?
Ginger Extract
9/10Gingerols and shogaols reduce nausea, accelerate gastric emptying, and provide systemic anti-inflammatory benefits.
Inulin
9/10Prebiotic fiber that selectively feeds Bifidobacteria and Lactobacilli, producing short-chain fatty acids for gut health and immunity.
Resistant Starch
9/10Bypasses small intestine digestion to feed colon bacteria that produce butyrate — supports blood sugar, gut integrity, and metabolic health.
Spirulina
9/10Blue-green algae with 60-70% complete protein and unique phycocyanin antioxidant — lowers cholesterol, blood pressure, and blood sugar.
Tap node to isolate • Pinch to zoom • Tap edge for research