Vitamin
PABA
PABA, or para-aminobenzoic acid, is a compound that bacteria use to make folate. It was once called a B vitamin, but humans do not need it from the diet.
Also listed as Para-aminobenzoic acid, 4-Aminobenzoic acid
What it is studied for
The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.
Every rating with its studiesGrouped by health goal, with the publications behind each rating
Why people take it
Essential Health21.5%
Energy19.2%
Immune Support16.7%
Cognition10.5%
Bone & Joint7.8%
Stress & Mood5.5%
SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.