Cozaar

(Losartan)

3.7/ 5 average rating with 535 reviewsforLosartan
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Lowers blood pressure.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

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

Lowest price near you
  • Lowest price with coupon
    $118.87
Quick facts about Losartan
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (losartan)

Upsides

  • 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.
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What to expect from Losartan, on one page

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People’s experience with Losartan

535reviews so far. What do you think?

Downsides

  • 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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What to expect from Losartan, on one page

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How it works

Cozaar (Losartan) is an angiotensin receptor blocker (ARB). It blocks a chemical that tightens blood vessels. This makes blood vessels relax, which lowers blood pressure and allows more blood and oxygen to get to your heart and other organs.

Quick facts about Losartan
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (losartan)

Dosage forms

  • Pill
People’s experience with Losartan

535reviews so far. What do you think?

Prices and coupons

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

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Possible side effects
  • Dizziness
  • Muscle pain
  • Kidney problems
  • High potassium levels
  • Cough
  • Unusual swelling
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Side effect rates for Cozaar (Losartan)

From 1409 clinical trials of Losartan when taken for high blood pressure
  • Upper respiratory infection
    8%8%
    7%7%
  • Dizziness
    3%3%
    2%2%
  • Back pain
    2%2%
    1%1%
  • Nasal congestion
    2%2%
    1%1%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Losartan.

Cozaar (Losartan)
Placebo

People taking Losartan felt side effect more

People taking Losartan felt side effect less

No difference

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

Common concerns from people taking Cozaar (Losartan)

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Pregnancy

Research studies with real people found harmful effects on unborn babies, but the benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for Losartan
DWeigh risks vs. benefits
Kidneys and liver
  • Requires routine blood tests to check kidney function.
  • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
Sleep
  • Not worth it
    Big hassle
    Reviewed Losartanon 10/19/2017Can make you very lethargic and tired. Want to sleep by noon.
    62
    Woman
    A few months
    High blood pressure