[Blätter]: Herzwirksame Cardenolidglykoside [4][18] (Oleandrin [4] (Folinerin [4]), Digitoxigenin [18], Gitoxigenin [18], Oleandrigenin [18], Adynerigenin [18], Neriagenin [18], Oleagennin [18], Uzarigenin [18]), Flavonoide [4], Flavonoidglykoside [18] (Neriin [18], Rutin [18]), Pregnanglykoside [4][18], pentacyclische Triterpene [18], Saponine [18], Gerbstoffe [18], Ätherisches Öl [18]; [Samen]: Cardenolidglykoside (Strospesid, Digitrosid, Oleandrin)