Olmesartan is prescribed to treat high blood pressure (hypertension). Reducing high blood pressure benefits prevent heart attacks, strokes, and kidney conditions. This medicine belongs to a type of drug named angiotensin receptor blockers (ARBs). It functions by soothing blood vessels so that blood can flow more efficiently. Take this medicine by mouth as instructed by your physician, usually one time daily with or without meals. The dosage is established on your medical history and reaction to treatment. If you are utilizing the liquid condition of this medicine, shake the bottle completely before every dosage. Cautiously estimate the dosage utilizing a particular measuring device/spoon.