Guaiac resin

INS 314

Used as an antioxidant.

Guaiac resin is a natural antioxidant used to protect fats and oils. The same resin was a European medicine for centuries and is still used as a chemical test reagent for blood.

Where it is and isn’t permitted

Status of Guaiac resin by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

4 food categories

highest permitted level 1,500 mg/kg

Show every food category
  • 02.1.2 Vegetable oils and fats — 1,000 mg/kg
  • 02.1.3 Lard, tallow, fish oil, and other animal fats — 1,000 mg/kg
  • 05.3 Chewing gum — 1,500 mg/kg
  • 12.6 Sauces and like products — 600 mg/kg
CXS 192-1995 Table One, INS 314and 3 further provisionsretrieved 2026-09-07

What it is made from

Tapped or extracted from the wood of Guaiacum officinale and related trees. Both species are listed under CITES, which constrains the trade.

  • Vegan
  • Vegetarian

Every name it appears under

2 recorded names. A label may use any of them.

INS number

  • 314

Other names

  • GUAIAC RESIN

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • gsfa retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/guaiac-resin.json