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Benicar and Diarrhea. Side effects of the blood pressure medication Benicar may include sprue-like enteropathy, a gastrointestinal disorder that causes diarrhea and other unpleasant complications.
If you have diabetes, do not use olmesartan together with any medication that contains aliskiren (Amturnide, Tekturna, Tekamlo). Before taking this medicine. You should not take Benicar if you are allergic to olmesartan. If you have diabetes, do not use Benicar together with any medication that contains aliskiren (Amturnide, Tekturna, Tekamlo).