Thickener · CAS 37220-17-0 · EU E425
Konjac Glucomannan
FDA status: GRAS. EU: Approved. No U.S. state has enacted a specific ban yet.
According to the U.S. Food and Drug Administration, Konjac Glucomannan is classified GRAS by the FDA, and no U.S. state has moved to restrict it independently of federal policy. Its composite safety score is 4 out of 5 (Low Risk), and the European Union separately classifies it as approved.
The verdict
Konjac Glucomannan is classified GRAS by the FDA, and no U.S. state has moved to restrict it.
- 4/5
- Low Risk
- GRAS
- FDA status
- Approved
- EU status
- 0
- state regulations
CAS-led regulatory snapshot
Konjac Glucomannan: no OFF product match; CAS 37220-17-0 is the lead registry handle on this row.
| Property | Value | Source |
|---|---|---|
| CAS Number | 37220-17-0 | CAS Registry |
| FDA Status | GRAS | FDA SAFFA |
| EU Status | Approved | EC 1333/2008 |
| E-Number | E425 | EU additive register |
| Category | Thickener | FDA functional class |
| Composite Safety Score | 4 / 5 (Low Risk) | PlainIngredients methodology |
| EFSA ADI | Not established | EFSA scientific opinion |
| U.S. State Actions | 0 states | State legislative records |
| Tracked Products | Not yet tracked | Open Food Facts (US) |
Values reflect official agency classifications as published by the U.S. Food and Drug Administration and the European Union's regulatory framework. See our methodology for scoring details.
What is Konjac Glucomannan?
Natural fiber from konjac root.
Health Concerns
- Safe with water. Choking risk in gel candies.
Common Uses
Catalog-profile peer axes
Nationwide catalog-profile peers for Konjac Glucomannan
Product-count (0) and safety-score (4/5) peer columns, disjoint link sets.
Score 4/5 peers (≥50 OFF products)
Nearest other additives by PlainIngredients safety score (floored at ≥50 tracked products), distinct from the count row.
Frequently Asked Questions
Is Konjac Glucomannan safe to consume?
Konjac Glucomannan scores 4/5 (Low Risk). FDA status is GRAS. No OFF product match yet; the distinctive registry handle is CAS 37220-17-0, so this page leads with the chemical identity row rather than a shelf-prevalence claim.
What is Konjac Glucomannan used for in food?
Konjac Glucomannan (CAS 37220-17-0) is catalogued for Shirataki noodles, fiber supplements (Thickener); OFF has not matched a U.S. product row yet.
What is the difference between FDA and EU regulation of Konjac Glucomannan?
The FDA classifies Konjac Glucomannan as "GRAS" while the EU status is "Approved" (E425). The EU often applies the precautionary principle, sometimes restricting additives that remain approved in the US.
What health concerns are associated with Konjac Glucomannan?
Research has identified the following health concerns for Konjac Glucomannan: Safe with water. Choking risk in gel candies.. These findings inform its safety score of 4/5. Consult a healthcare provider for personalized guidance, especially if you have pre-existing conditions.