Valsartan is used for:

Treating high blood pressure alone or with other medicines. It is also used for treating heart failure in patients who do not tolerate angiotensin-converting enzyme (ACE) inhibitors.

Valsartan is an angiotensin II receptor blocker. It works by blocking a hormone that tightens blood vessels. This causes blood vessels to relax (dilate), which lowers blood pressure and decreases the workload on the heart...