Antioxidant · CAS 500-38-9

Nordihydroguaiaretic Acid

FDA status: Banned. EU: not separately listed. No U.S. state has enacted a specific ban yet.

Banned / Avoid
Score 1 of 5
Nordihydroguaiaretic Acid: 1/5 (Banned / Avoid)

According to the U.S. Food and Drug Administration, Nordihydroguaiaretic Acid is banned by the FDA, and no U.S. state has moved to restrict it independently of federal policy. Its composite safety score is 1 out of 5 (Banned / Avoid).

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The verdict

Nordihydroguaiaretic Acid is banned by the FDA, and no U.S. state has moved to restrict it.

1/5
Banned / Avoid
Banned
FDA status
-
EU status
0
state regulations

Nordihydroguaiaretic Acid, CAS 500-38-9, is a antioxidant additive holding a composite safety score of 1 out of 5 (Banned / Avoid). According to the U.S. Food and Drug Administration's Substances Added to Food inventory, it is currently classified as Banned, while the European Union lists it as not separately listed. It is most commonly used as antioxidant.

No U.S. state has enacted specific legislation targeting Nordihydroguaiaretic Acid to date, keeping federal FDA classification as the operative standard. State-level food safety legislation remains active nationally, and that picture may shift as new bills advance.

No major peer-reviewed health concerns are presently documented for Nordihydroguaiaretic Acid at consumer exposure levels, though scientific review is ongoing and positions can shift. All figures above draw on FDA SAFFA inventory records, EU food additive regulation (EC) No 1333/2008, EFSA scientific opinions where published, and legislative records from individual U.S. states.

Regulatory Snapshot

Property Value Source
FDA Status Banned FDA SAFFA
EU Status Not separately listed EC 1333/2008
E-Number - EU additive register
CAS Number 500-38-9 CAS Registry
Category Antioxidant FDA functional class
Composite Safety Score 1 / 5 (Banned / Avoid) 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.

FDA Status

Banned

EU Status

Not specified

U.S. State Regulations

0 states

None enacted

Safety Assessment

Nordihydroguaiaretic Acid's 1/5 (Banned / Avoid) score reflects where this specific ingredient lands on that scale. The FDA has banned Nordihydroguaiaretic Acid from food use, indicating sufficient evidence of safety concerns.

How Nordihydroguaiaretic Acid compares

Where a safety score of 1/5 falls among all 4,509 scored ingredients tracked on PlainIngredients.

Ingredients by safety score (Nordihydroguaiaretic Acid highlighted)

1/541 ingredients2/543 ingredients3/525 ingredients4/54,369 ingredients5/531 ingredients

41 of 4,509 scored ingredients (0.9%) share a safety score of 1/5.

What is Nordihydroguaiaretic Acid?

Nordihydroguaiaretic Acid--prohibited with Exceptions (CAS 500-38-9) is an FDA-regulated food substance used as antioxidant.

Common Uses

antioxidant

Frequently Asked Questions

Is Nordihydroguaiaretic Acid safe to consume?

Nordihydroguaiaretic Acid has a safety score of 1/5 (Banned / Avoid). It is banned by the FDA. Check with a healthcare provider for personalized advice.

Data Sources
  • FDA Substances Added to Food (SAFFA) Inventory
  • EU Food Additive Regulations (EC) No 1333/2008
  • State food safety legislation and bill records

What to do about Nordihydroguaiaretic Acid

This additive is flagged, worth checking labels for.

  • Check the FDA status (Banned) and EU status (unlisted) before assuming it is risk-free. How we score
  • Compare it against the most-restricted additives in the U.S. supply. View rankings
  • Scan a whole ingredient label at once to flag the concerning entries. Label checker

Safety scores summarise regulatory status and published concerns; they are not medical or dietary advice.

Every figure on PlainIngredients is rendered directly from FDA, EU, EFSA and U.S. state regulatory records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.