Pill imprint AMNEAL 669 has been identified as Acebutolol hydrochloride 200 mg. Acebutolol is used in the treatment of high blood pressure; ventricular arrhythmia; premature ventricular depolarizations; ventricular tachycardia; migraine prevention and belongs to the drug classes cardioselective beta blockers, group II antiarrhythmics. There is no proven risk in humans during pregnancy.