Prozin Vet Promethazine Hydrochloride Amitriptyline Hydrochloride
ModerateAdditive sedation and anticholinergic effects, with QT prolongation risk.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.
Clinical management: Use lowest doses and monitor for anticholinergic toxicity.