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Ingredient · Vitamin Mineral

Folic Acid

Cleaner · 7/10, higher is cleaner

How we reached this

Mandatory fortification reduced neural-tube defects ~30% (US mandate 1998). Some studies suggest excess synthetic folate may be problematic; folate (natural) generally preferred.

Sources · 2

Regulatory position

United StatesGRAS

Also listed as

B9folate (synthetic)pteroylmonoglutamic acid

Products containing this · 20

About this rating

Ratings run 1–10, higher is cleaner, and are set editorially against the sources above — see the methodology page for how an ingredient rating becomes part of a product score. Last reviewed 2026-06-08.