Quercus alba Common name: White oak
Part used: Bark
Constituents: Tannins (up to 15-20% consisting of phlobatannin, ellagitannins, and gallic acid)
Medicinal actions: Astringent, hemostatic, antiseptic
Medicinal use: Quercus is used in the treatment of pharyngitis as a gargle, in the treatment of diarrhea as tea or tincture, and in the treatment of hemorrhoids as an enema, suppository, or compress. Quercus is a strong astringent and antiseptic and a mild tonic to the tissues which it contacts.
Pharmacy: Decoction 1 tsp/cup; 1 cup TID. Tincture: (1:5), 1-3 ml TID. Powder: 1-2 g TID.