What are the possible side effects of Danshen (Salvia miltiorrhiza)?
Danshen may increase the risk of bleeding. This herb is reported to inhibit platelet aggregation and to increase the blood-thinning effects of warfarin in humans. Caution is advised in patients with bleeding disorders, taking drugs that may increase the risk of bleeding, or prior to some surgical procedures. Dosing adjustments may be necessary. Some people may experience stomach discomfort, reduced appetite, or itching. In theory, danshen may lower blood pressure and should be used cautiously by patients with blood pressure abnormalities or taking drugs that alter blood pressure. In theory, a chemical found in danshen called miltirone may increase drowsiness. Caution is advised while driving or operating machinery. Convulsions, mental changes, and dystonia syndrome may occur.
