Is Konjac Constipation Randomized Trial safe?

Updated October 2026

Quick Answer

Konjac Constipation Randomized Trial has evidence relevant to safety, limits, and clinician-discussion contexts, but conclusions should stay close to the cited sources. One representative finding is: Dietary supplements may contain multiple ingredients, and differences are often found between labeled and actual ingredients or their amounts.

Key Takeaways

  • 01Dietary supplements may contain multiple ingredients, and differences are often found between labeled and actual ingredients or their amounts. [Glucomannan (2024)]
  • 02Glucomannan is a soluble, highly viscous fiber commonly derived from Amorphophallus konjac root. [Glucomannan (2024)]
  • 03It is most often used to lower cholesterol, to treat constipation and diabetes, and is contained in products to promote weight loss. [Glucomannan (2024)]
  • 04The present opinion deals with the re-evaluation of konjac (E 425), comprising konjac gum (E 425 i) and konjac glucomannan (E 425 ii) when used as food additives. [EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) (2017)]
The current Migaku evidence database contains 2 reusable source documents for Konjac Constipation Randomized Trial. This answer focuses on safety, limits, and clinician-discussion contexts. - Dietary supplements may contain multiple ingredients, and differences are often found between labeled and actual ingredients or their amounts. [Glucomannan (2024); evidence level 4] - Glucomannan is a soluble, highly viscous fiber commonly derived from Amorphophallus konjac root. [Glucomannan (2024); evidence level 4] - It is most often used to lower cholesterol, to treat constipation and diabetes, and is contained in products to promote weight loss. [Glucomannan (2024); evidence level 4] - The present opinion deals with the re-evaluation of konjac (E 425), comprising konjac gum (E 425 i) and konjac glucomannan (E 425 ii) when used as food additives. [EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) (2017); evidence level 4] - Konjac gum and konjac glucomannan were unlikely to be absorbed intact and were significantly fermented by intestinal microbiota. [EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) (2017); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. Glucomannan
  2. Re-evaluation of konjac gum (E 425 i) and konjac glucomannan (E 425 ii) as food additives.