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Botanical

Pau d'arco

Pau d'arco is the inner bark of South American trees of the genus Handroanthus, formerly Tabebuia, used in traditional medicine.

Also listed as Handroanthus impetiginosus, Tabebuia Heptaphylla, Tabebuia impetiginosus, Tabebuia avellanedae

LongevityHair & SkinImmune SupportGut Health

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.

Oxidative stressLongevitySmallCNo linked study
InflammationSmallCNo linked study
Skin InflammationHair & SkinSmallCNo linked study
Immune SupportSmallCNo linked study
Gut healthSmallCNo linked study
Every rating with its studiesGrouped by health goal, with the publications behind each rating

Why people take it

Immune Support26.1%
Detox21.7%
Gut Health17.4%
Inflammation7.2%
Essential Health7.2%
Energy5.8%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Sources

  1. SuppCo · Pau d'arco nutrient profile