Losartan (By mouth)

Introduction

Losartan (loe-SAR-tan)

Used alone or with other medicines to treat high blood pressure. Reduces the risk of stroke in patients with high blood pressure and enlargement of the heart. Treats kidney disease in patients with Type 2 diabetes and a history of high blood pressure.

Brand Name(s)

There may be other brand names for this medicine.

Cozaar

When This Medicine Should Not Be Used

You should not use this medicine if you have had an allergic reaction to losartan, or if you are pregnant.

How to Use This Medicine

Tablet

  • Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.
  • You may take this medicine with or without food.

If a dose is missed:

  • If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use 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.
  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.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 away from children and 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 are using diuretics ("water pills") such as amiloride, spironolactone, triamterene, Aldactone®, Midamor®, or Moduretic®. Tell your doctor if you are using fluconazole (Diflucan®), indomethacin (Indocin®), or rifampin (Rifadin®).
  • Ask your doctor before you use potassium supplements or salt substitutes that contain potassium.

Warnings While Using This Medicine

  • Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
  • Make sure your doctor knows if you are breast feeding, or if you have kidney disease, liver disease, or congestive heart failure.
  • This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.
  • If you stop using this medicine, your blood pressure may go up. High blood pressure usually has no symptoms. Even if you feel well, do not stop using the medicine without asking your doctor.

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.
  • Chest pain.
  • Confusion, weakness, irregular heartbeat, shortness of breath, or numbness or tingling in your hands, feet, or lips.
  • Fast or slow heartbeat.
  • Lightheadedness or fainting.

If you notice these less serious side effects, talk with your doctor:

  • Cough, stuffy or runny nose, sore throat.
  • Diarrhea.
  • Muscle pain or twitching.
  • Swelling in your hands, ankles, or feet.
  • Trouble sleeping.

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

Review Date: 2011-02-04 Reviewed By: Keywords: ,
Adam Data Copyright The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only--they do not constitute endorsements of those other sites. © 1997- 2010 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

For information 410.787.4000

© 2013 UM Baltimore Washington Medical Center.  All rights reserved.

301 Hospital Drive, Glen Burnie, MD 21061 | 410-787-4000 | TTY 410-787-4498