Hydralazine HCl 10mg, 25mg, 50mg, 100mg. Initially 10mg 4 times daily for 2–4 days, then increase to 25mg 4 times daily for rest of 1 st week, then to 50mg 4 times daily; max 300mg/day.

It was manufactured by a well-known pharmaceutical company and may be used to treat a specific group of patients managing hypertension.