Compare Atenolol vs. Losartan

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

Tenormin (atenolol)

Prescription only

Cozaar (Losartan)

Prescription only
Lowers blood pressure and controls heart rate.

Tenormin (atenolol) is good for controlling chest pain and treating a heart attack. It has fewer side effects than other beta blockers. You need to take it on an empty stomach and you can't skip doses.

3.6/ 5 average rating with 457 reviewsforAtenolol
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.

3.7/ 5 average rating with 535 reviewsforLosartan
Upsides
  • A first-choice treatment to prevent chest pain (angina).
  • A first-choice treatment for heart attack recovery.
  • At lower doses, Tenormin (atenolol) has fewer side effects than other beta blockers because it targets the heart and not other parts of the body.
  • 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
  • You need to take Tenormin (atenolol) on an empty stomach.
  • 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 it might not go away for others.
  • Not a first-choice treatment for high blood pressure unless you have heart disease. However, your doctor could add it to other medicines you're already if your blood pressure is still too high.
  • You can't miss or skip doses. If you stop Tenormin (atenolol) suddenly, it can cause your blood pressure to go up really quickly, raising your risk of heart attack and stroke.
  • Tenormin (atenolol) can hide symptoms of low blood sugar if you're diabetic.
  • Requires a yearly blood test to see how the medicine is affecting your body.
  • Not safe to use if you're pregnant.
Used for
Dosage forms
  • Pill
  • Pill
Price
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Reviews
457 reviews so far
58%
saidit'sworth it
48%
saiditworked well
16%
saidit'sa big hassle

Have you used Tenormin (atenolol)?

Leave a review
535 reviews so far
57%
saidit'sworth it
48%
saiditworked well
16%
saidit'sa big hassle

Have you used Cozaar (Losartan)?

Leave a review
Side effects
17possible side effects
  • Tiredness
    26%
  • Dizziness
    13%
  • Cold arms and legs
    12%
  • Depression
    12%
  • Fatigue
    6%
  • Shortness of breath
    6%
  • Low blood pressure on movement changes
    4%
  • Slower heartbeat
    3%
  • Leg Pain
    3%
  • Light-headedness
    3%
  • Decreased energy
    3%
  • Vivid dreams
    3%
  • Diarrhea
    3%
  • Nausea
    3%
  • Wheeziness
    3%
  • Feeling off balance
    2%
  • Drowsiness
    2%
See more detailed side effects
4possible side effects
  • Upper respiratory infection
    8%
  • Dizziness
    3%
  • Back pain
    2%
  • Nasal congestion
    2%
See more detailed side effects
Risks and risk factors
  • Heart attack or increased chest pain
    • Suddenly stopping Tenormin (atenolol)
  • Heart failure
  • Slowing heart rate
    • Taking calcium channel blockers
  • Increased risks during surgery
    • Major surgery requiring anesthesia
  • Masked symptoms of low blood sugar
    • Diabetes
  • Masked symptoms of overactive thyroid
  • Increased risk of rebound high blood pressure
    • Taking clonidine
See more detailed risks and warnings
  • Harm to fetus
    • Women of childbearing age
  • Liver damage
    • Concurrent liver disease
  • Heart problems due to high potassium
    • Current kidney problems
    • Medicine that increase potassium
    • Use of salt substitute
See more detailed risks and warnings