What is the function of Lagerstroemia indica bark?

Indications: clearing away heat and toxic materials; Eliminating dampness and expelling wind; Remove blood stasis and stop bleeding. Main nameless swelling poison; Erysipelas; Carbuncle of breast; Sore throat; Hepatitis; Scabies; Crane knee wind; Fall and get injured; Internal injury bleeding; Below the subsidence area

Usage and dosage: decocted,10-15g; Or soak in wine; Let's grind it. External use: appropriate amount, ground and applied; Or fried and washed.

Excerpts from Chinese Materia Medica