Losartan Potassium

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Losartan Potassium

Losartan Potassium drug image
Brand Cozaar
Form Oral Tablet
Drug Type   Angiotensin II inhibitors

 

Losartan is an angiotensin II receptor antagonist (sometimes called an ARB blocker).

 

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Drug Information

Losartan is an angiotensin II receptor antagonist (sometimes called an ARB blocker).

Losartan is used to treat high blood pressure (hypertension) in adults and children who are at least 6 years old. It is also used to lower the risk of stroke in certain people with heart disease.

Losartan is also used to slow long-term kidney damage in people with type 2 diabetes who also have high blood pressure.

Losartan may also be used for purposes not listed in this medication guide.

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

You may take losartan with or without food.

Call your doctor if you are sick with vomiting or diarrhea, or if you are sweating more than usual. You can easily become dehydrated while taking losartan. This can lead to very low blood pressure, a serious electrolyte imbalance, or kidney failure.

Your blood pressure will need to be checked often and you may need other blood and urine tests.

It may take 3 to 6 weeks before your blood pressure is under control. For best results, keep using the medicine as directed. Talk with your doctor if your condition does not improve after 3 weeks of treatment.

If you have high blood pressure, keep using this medicine even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medicine for the rest of your life.

Store at room temperature away from moisture, heat, and light.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • a light-headed feeling, like you might pass out;
  • pain or burning when you urinate;
  • high potassium level --nausea, weakness, tingly feeling, chest pain, irregular heartbeats, loss of movement; or
  • kidney problems --little or no urination, rapid weight gain, painful or difficult urination, swelling in your hands, feet, or ankles.

Common side effects may include:

  • dizziness;
  • back pain; or
  • cold symptoms such as stuffy nose, sneezing, sore throat.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Drinking alcohol can further lower your blood pressure and may increase certain side effects of losartan.

Do not use potassium supplements or salt substitutes, unless your doctor has told you to.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.

Tell your doctor about all your other medicines, especially:

  • a diuretic or "water pill";
  • other blood pressure medications;
  • lithium; or
  • NSAIDs (nonsteroidal anti-inflammatory drugs) --aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others.

This list is not complete. Other drugs may affect losartan, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

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