Before taking eprosartan,
tell your doctor and pharmacist if you are allergic to eprosartan, any other medications, or any of the ingredients in eprosartan tablets. Ask your pharmacist for a list of the ingredients.
tell your doctor if you have diabetes (high blood sugar) and you are taking aliskiren (Tekturna, in Amturnide, Tekamlo, Tekturna HCT). Your doctor will probably tell you not to take eprosartan if you have diabetes and you are also taking aliskiren.
tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention the following: angiotensin-converting enzyme (ACE) inhibitor such as benazepril (Lotensin, in Lotrel), captopril (Capoten, in Capozide), enalapril (Vasotec), fosinopril, lisinopril (in Prinzide), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril, in Accuretic, Quinaretic), ramipril (Altace), trandolapril (Mavik, in Tarka); aspirin and other nonsteroidal anti-inflammatory medications (NSAIDs) such as ibuprofen (Advil, Motrin) and naproxen (Aleve, Naprosyn) and selective COX-2 inhibitors such as celecoxib (Celebrex); diuretics ('water pills'); and potassium supplements. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
tell your doctor if you have or have ever had heart failure or kidney disease.
tell your doctor if you are breastfeeding.
you should know that eprosartan may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. This is more common when you first start taking eprosartan. To help avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up.
you should know that diarrhea, vomiting, not drinking enough fluids, and sweating a lot can cause a drop in blood pressure, which may cause lightheadedness and fainting. Tell your doctor if you have any of these problems or develop them during your treatment.