White Oak Bark

Quercus alba

Family: Fagaceae Evidence: T teatincturedecoction

An astringent bark used topically for hemorrhoids, wounds, and skin irritation, and internally for diarrhea and sore throat gargle. Rich in tannins.

Safety Profile

PregnancyInsufficient Data
BreastfeedingInsufficient Data
PediatricUse Caution

Contraindications

Heart conditions (tannins). Constipation. Iron deficiency. Not for internal long-term use.

Interactions

May reduce absorption of medications due to tannins.

Side Effects

GI upset, constipation. Take separately from medications.

Kidney: May irritate kidneys with prolonged internal use.
This information is for educational purposes only. It is not medical advice. Consult a qualified healthcare provider before using any herbal product.