“…Propranolol hydrochloride, 1-[isopropylamino-3-[1-naphthyloxy]-2-propanol hydrochloride (I), is β-blocker drug and used to control hypertension, cardiac arrhythmia, myocardial and hyperthyroidism diseases [2][3][4][5]. Methyldopa, αmethyl-3,4-dihydroxyphenylalanine (II) is used as an antihypertensive agent and effective inhibitor for the dopa-decarboxylase enzyme to lower blood pressure [6,7].…”