Phenylbutazone

Phenylbutazone in plain language

What it is

Also known as 4-Butyl-1,2-diphenyl-3,5-Pyrazolidinedione · Phenylbutazone (INN) · 3,5-DIOXO-1,2-DIPHENYL-4-N-BUTYLPYRAZOLIDINE · 4-Butyl-1,2-diphenylpyrazolidine-3,5-dione · Diphebuzol · Diphenylbutazone

Show all 44 names

Fenibutazona · Fenylbutazon · Flexazone · Phebuzine · Shigrodin · Zolaphen · 1,2-Diphenyl-3,5-dioxo-4-butylpyrazolidine · 1,2-Diphenyl-3,5-dioxo-4-n-butylpyrazolidine · 1,2-Diphenyl-4-butyl-3,5-pyrazolidinedione · 3,5-Pyrazolidinedione, 4-butyl-1,2-diphenyl- · 4-Butyl-1,2-diphenyl-3,5-dioxopyrazolidine · Ambene · Artrizin · Azolid · Bizolin · Butacote · Butadion · Butadiona · Butapirazol · Butatron · Butazolidin · Butoz · Buzon · Butazolidine · Ecobutazone · Equipalazone · Exrheudon n · Fenibutol · Fenilbutazona · G-13871 · Intrabutazone · Intrazone · Mepha-butazon · Phenyzene · R-3-ZON · Robizone-v · Tevcodyne · Uzone

What it does

We don't have a plain-language description for Phenylbutazone yet.

Is it a concern?

Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

Phenylbutazone (INN) is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

• In marketed US drugs
• EU Annex II — prohibited
• EU prohibited in cosmetics

• EU·EC

  Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

  banned
  View source →

• EU·CosIng·ActiveCosmetics Regulation annex II / ref 67.

  • Cosmetics Regulation annex II / ref 67.Source →
• US·EPA·commercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.

  • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.Source →
• US·FDA·marketed drug occurrenceFDA NDC lists this ingredient in 4 active drug products and 6 total products.

  • FDA NDC lists this ingredient in 4 active drug products and 6 total products.Source →
• US·FDA·listed in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.

  • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Phenylbutazone. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

• SCCS

  EU Scientific Committee on Consumer Safety

  No SCCS opinion on file.

• CIR

  Cosmetic Ingredient Review (US expert panel)

  No CIR safety assessment on file.