Bottle of Strophanthus Tincture tablets, England, 1910-1930

A bottle containing Strophanthus Tincture tablets, made by Burroughs Wellcome & Co. Ripe seeds from Strophanthus gratus and kombé plants contain a chemical that works on the heart. In Europe it has been made into tablets, powders or solutions for injection, and sold for the treatment of heart conditions.