Covera-HS (verapamil hydrochloride) is a calcium ion influx inhibitor (slow-channel containing 240 mg of verapamil hydrochloride and as lavender, round, .. doses up to 1.5 (15 mg/kg/day) and 6 (60 mg/kg/day) times the human oral daily embryocidal and retarded fetal growth and development, probably...