Prescription onlyLower-cost generic available

Cozaar

(Losartan)

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Lowers blood pressure.

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Prescription onlyLower-cost generic available

Our pharmacists’ bottom line

Cozaar (Losartan) is a good blood pressure-lowering medicine that protects kidney function like an ACE inhibitor, but with fewer side effects.

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  • A first-choice blood pressure treatment for many people.
  • Lowers the risk of heart attack and stroke.
  • Similar to ACE inhibitors (like Lisinopril), with fewer side effects like cough and swelling.
  • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
  • Recommended for anyone with heart failure since it lowers the risk of death and further damage to your heart.
  • Requires a yearly blood test to see how the medicine is affecting your body.
  • Not safe to use if you're pregnant.

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Side effects for Cozaar (Losartan)

From clinical trials of Losartan / High blood pressure ( 1409)

  • Upper respiratory infectionUpper respiratory infection8% for Losartan vs.7% for placebo
  • DizzinessDizziness3% for Losartan vs.2% for placebo
  • Back painBack pain2% for Losartan vs.1% for placebo
  • Nasal congestionNasal congestion2% for Losartan vs.1% for placebo
  • Muscle crampMuscle cramp1% for Losartan vs.0% for placebo
  • Leg painLeg pain1% for Losartan vs.0% for placebo
  • Sinus inflammationSinus inflammation1% for Losartan vs.0% for placebo

What to expect when you take Cozaar (Losartan) for Lowers blood pressure

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Tips from our pharmacists
  • Can cause dizziness in the first few days.
  • Check your blood pressure 1 week after starting this medicine, and tell your doctor if it hasn't improved.
  • Tell your doctor about any dizziness, fatigue, cough, or throat irritation that doesn't go away.
  • Requires routine blood tests to check kidney function.
  • Don't take it if you're pregnant.

Risks and Warnings for Cozaar (Losartan)

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    • Higher risk if:
    • Women of childbearing age

    Cozaar (Losartan) can cause birth defects or death to a fetus. If you are pregnant or considering having a baby, talk to your doctor about alternative medicines.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Cozaar (Losartan)

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The FDA category for this medication is D. It is advised that you: Weigh risks vs. benefits
Pregnancy
Food
  • When you start medication you should take in evening right after dinner for the first week or two if you've never taken a blood pressure medication. It makes you feel a bit odd shortly after taking it in the beginning and is best to take when you can be comfortable and not doing much. After two weeks, then it's best to take in the morning with food. After few weeks I found it impossible to go to sleep if taken in the evening, as it now gives me a bit of energy after taking.
    Age: 32
    Gender: Man
    Taken for: High blood pressure
Kidneys & liver
  • Upsides and downsides from our pharmacists
  • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
  • Tips from our pharmacists
  • Requires routine blood tests to check kidney function.
Sleep
  • When you start medication you should take in evening right after dinner for the first week or two if you've never taken a blood pressure medication. It makes you feel a bit odd shortly after taking it in the beginning and is best to take when you can be comfortable and not doing much. After two weeks, then it's best to take in the morning with food. After few weeks I found it impossible to go to sleep if taken in the evening, as it now gives me a bit of energy after taking.
    Age: 32
    Gender: Man
    Taken for: High blood pressure
  • It did not lower my bp significantly plus the dizziness (strong as vertigo) prevented me from function normally in the daly basis. Some days i couldn't sleep, and got up in the morning very sick, dizzy and felt like I was going to pass out.
    Age: 43
    Gender: Man