“Case reports or case series suggest interactions of St John’s wort with adrenergic vasopressors, anaesthetics, bupropion , buspirone, ciclosporin, eletriptan, loperamide, nefazodone, nevirapine, oral contraceptives, paroxetine, phenprocoumon, prednisone, sertraline, tacrolimus, theophylline, tibolone, tryptophan, venlafaxine and warfarin.”