Compare Toprol XL vs. Losartan

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Toprol Xl
(Metoprolol Succinate)

Cozaar
(Losartan)

Lowers blood pressure and controls heart rate. Toprol Xl (Metoprolol Succinate) is good for controlling chest pain and treating heart failure and heart attack. You can't miss doses.Lowers blood pressure. 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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Reviews & ratings
Button Group. All currently active
Button Group. All currently active
5.220858895705521Toprol XL
Reviews for Toprol Xl (Metoprolol Succinate)
60%
of people say Toprol Xl (Metoprolol Succinate) is worth it
55%
say it works well
13%
say it's a big hassle
Reviews for Cozaar (Losartan)
57%
3% vs. Toprol Xl (Metoprolol Succinate)
47%
8% vs. Toprol Xl (Metoprolol Succinate)
16%
3% vs. Toprol Xl (Metoprolol Succinate)
Side effects
Toprol XLLosartan
  • Abnormally slow heartbeat 9%
  • Low blood pressure 4%
  • Heart block 3%
More Toprol XL side effects »
  • Urinary tract infection 6%
  • Diarrhea 5%
  • Low blood sugar 4%
  • Low blood pressure 4%
  • Muscle weakness/fatiguea/fatigue 4%
  • Hyperkalemia 4%
  • Chest pain 4%
  • Low red blood cells 3%
  • Muscular weakness 3%
  • Orthostatic hypotension 3%
More Losartan side effects »
How it works
Toprol XLLosartan
Toprol Xl (Metoprolol Succinate) is a beta blocker. It lowers blood pressure by slowing heart rate, relaxing blood vessels, and lowering the body's fight-or-flight response.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.
Type of medication
Toprol XLLosartan
Antihypertensive
Beta blocker
Prescription only
Antihypertensive
Angiotensin receptor blocker
Prescription only
Available as
Toprol XLLosartan
  • Pill
  • Extended release
  • Pill
Used for (click to learn more)
Toprol XLLosartan
Risk factors for serious side effects
Toprol XLLosartan
  • Diabetes
    • Coronary artery disease
    • Heart failure
    • Major surgery requiring anesthesia
    • History of asthma
    Detailed Toprol Xl (Metoprolol Succinate) risks & warnings »
    • Women of childbearing age
    • Concurrent liver disease
    • Current kidney problems
    • Medicine that increase potassium
    • Use of salt substitute
    Detailed Cozaar (Losartan) risks & warnings »
    Pregnancy category
    Toprol XLLosartan
    CFDA pregnancy category (Weigh risks vs. benefits)

    Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

    See the FDA package insert
    DFDA pregnancy category (Weigh risks vs. benefits)

    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.

    See the FDA package insert
    Alcohol
    No specific alcohol-related info.No specific alcohol-related info.
    Food
    No specific food-related info.No specific food-related info.
    Kidneys and liver
    No specific kidneys and liver-related info.
    • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
    • Requires routine blood tests to check kidney function.
    Sex
    No specific sex-related info.No specific sex-related info.
    Sleep
    No specific sleep-related info.No specific sleep-related info.
    Weight
    No specific weight-related info.No specific weight-related info.
    Upsides and benefits
    Toprol XLLosartan
    • A first-choice treatment to prevent chest pain (angina). Makes pain attacks less frequent and makes it easier to be active without having chest pain.
    • A first-choice treatment for heart failure. May prevent long-term heart damage.
    • A first-choice treatment for heart attack. Lowers the risk of death during and after a heart attack.
    • Toprol XL is the extended release version of Lopressor.
    • 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.
    Downsides and risks
    Toprol XLLosartan
    • Taking a beta blocker might make you feel more tired or out of breath during exercise or normal daily routines. This gets better for most people, but for some might not go away.
    • Not a first-choice treatment for high blood pressure according to the latest guidelines, except if you have heart failure or heart disease.
    • Can hide symptoms of low blood sugar if you're diabetic.
    • You can't miss doses. Stopping Toprol XL suddenly can cause your blood pressure to go up suddenly, which raises the risk of heart attack and stroke.
    • Requires a yearly blood test to see how the medicine is affecting your body.
    • Not safe to use if you're pregnant.
    Tips from our pharmacists for people taking the medication
    Toprol XLLosartan
    • Can cause fatigue and headache.
    • Can hide symptoms of low blood sugar. Be careful if you're diabetic.
    • Don't stop taking this medicine suddenly.
    • Extended release version. Also comes in immediate release called Lopressor (metoprolol tartrate).
    • 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.
    • 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.
    Learn more
    More about Toprol XLSide effectsReviews & ratingsAlternativesFDA package insert
    More about LosartanSide effectsReviews & ratingsAlternativesFDA package insert