Amlodipine is in a group of drugs called calcium channel blockers.

Amlodipine relaxes (widens) blood vessels and improves blood flow.

Hydrochlorothiazide is a thiazide diuretic (water pill) that helps prevent your body from absorbing too much salt, which can cause fluid retention.Valsartan is in a group of drugs called angiotensin II receptor antagonists. Valsartan keeps blood vessels from narrowing, which lowers blood pressure and improves blood flow.

This medication is usually given after other blood pressure medications have been tried without successful treatment of symptoms.