Olmesartan (By mouth)
Olmesartan Medoxomil (ol-me-SAR-tan me-DOX-oh-mil)
Treats high blood pressure. A lower blood pressure can reduce the risk of stroke and heart attack. This medicine is an angiotensin receptor blocker (ARB).
When This Medicine Should Not Be Used
How to Use This Medicine
- Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
- If your child cannot swallow the tablets, your doctor may prescribe an oral liquid that is prepared by a pharmacist. Shake the oral liquid well before each use. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
- Carefully follow your doctor's instructions about any special diet. Drink plenty of fluids if you exercise, sweat more than usual, or have diarrhea or vomiting while you are using this medicine.
If a dose is missed:
- Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
How to Store and Dispose of This Medicine
- Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Store the oral liquid in the refrigerator for up to 4 weeks. Throw away any unused medicine after 4 weeks.
- Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Make sure your doctor knows if you also use a diuretic (water pill, such as furosemide, hydrochlorothiazide, torsemide, Aldactone®, Demadex®, Lasix®, Zaroxolyn®) or other blood pressure medicine (such as aliskiren, benazepril, enalapril, lisinopril, Avalide®, Avapro®, Benicar®, Cozaar®, Diovan®, Lotrel®, Micardis®, Tekturna®, Vasotec®, Zestril®, Zestoretic®). Tell your doctor if you are also taking an NSAID pain or arthritis medicine (such as aspirin, diclofenac, ibuprofen, naproxen, Advil®, Aleve®, Celebrex®, Voltaren®).
- If you also use colesevelam (Welchol®), take it at least 4 hours after you take Benicar®.
Warnings While Using This Medicine
- It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant.
- Make sure your doctor knows if you are breastfeeding or if you have kidney problems, liver disease, congestive heart failure, or low sodium levels.
- This medicine could lower your blood pressure too much and cause you to feel dizzy or lightheaded. Stand or sit up slowly if you are dizzy. This is more likely to happen when you begin to use the medicine or if you become dehydrated.
- Severe chronic diarrhea with weight loss may develop months to years after you start taking this medicine. Tell your doctor right away if you have these symptoms.
- Do not stop using this medicine without asking your doctor, even if you feel well. This medicine will not cure your high blood pressure, but it will help keep it in normal range. You may have to take blood pressure medicine for the rest of your life.
- Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Possible Side Effects While Using This Medicine
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Change in how much or how often you urinate, bloody or cloudy urine
- Lightheadedness, dizziness, or fainting
- Rapid weight gain, swelling in your hands, ankles, or feet
- Severe diarrhea with weight loss
If you notice these less serious side effects, talk with your doctor:
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
- Last reviewed on 8/4/2014
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