Compare Lopressor vs. Atenolol

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

Lopressor
(metoprolol tartrate)

Tenormin
(atenolol)

Lowers blood pressure and controls heart rate. Lopressor (metoprolol tartrate) lowers high blood pressure, controls chest pain, and helps treat heart failure and heart attack. You need to take it with food and can't miss a dose.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.
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Reviews & ratings
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Filter group. All currently selected
5.02Lopressor
Reviews for Lopressor (metoprolol tartrate)
62%
of people (All ages) say Lopressor (metoprolol tartrate) is worth it
47%
say it works well
15%
say it's a big hassle
464 reviews
Have you used Lopressor (metoprolol tartrate)?
Worth itNot sureNot worth it
Reviews for Tenormin (atenolol)
58%
-4% worse vs. Lopressor (metoprolol tartrate)
48%
+1% better vs. Lopressor (metoprolol tartrate)
16%
-1% worse vs. Lopressor (metoprolol tartrate)
457 reviews
Have you used Tenormin (atenolol)?
Worth itNot sureNot worth it
Side effects
LopressorAtenolol
  • Tiredness 10%
  • Dizziness 10%
  • Low mood disorder 5%
  • Diarrhea 5%
  • Itching or skin rash 5%
  • Shortness of breath 3%
  • Slowed heart rate 3%
  • Low blood pressure 4%
More Lopressor side effects »
  • Tiredness 13%
  • Dizziness 7%
  • Low mood disorder 3%
  • Cold arms and legs 7%
  • Fatigue 1%
  • Shortness of breath 2%
  • Light-headedness 3%
  • Leg pain 2%
  • Decreased energy 3%
More Atenolol side effects »
How it works
LopressorAtenolol
Lopressor (metoprolol tartrate) is a beta blocker. It lowers blood pressure by slowing your heart rate, relaxing blood vessels, and lowering the body's fight-or-flight response.Tenormin (atenolol) is a selective beta blocker that works specifically on the heart by slowing down the heart and making the heart pump better.
Type of medication
LopressorAtenolol
Prescription only
Prescription only
Available as
LopressorAtenolol
  • Pill
  • Pill
Used for
LopressorAtenolol
Risk factors for serious side effects
LopressorAtenolol
  • Suddenly stopping Lopressor (metoprolol tartrate)
  • Coronary artery disease
  • Diabetes
  • Heart failure
  • Major surgery requiring anesthesia
Detailed Lopressor (metoprolol tartrate) risks & warnings »
  • Suddenly stopping Tenormin (atenolol)
  • Taking calcium channel blockers
  • Major surgery requiring anesthesia
  • Diabetes
  • Taking clonidine
Detailed Tenormin (atenolol) risks & warnings »
Pregnancy

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.

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.

Food
LopressorAtenolol
  • You need to take Lopressor (metoprolol tartrate) with food twice a day for it to work best.
No food related info.
Pain
LopressorAtenolol
  • Makes pain episodes less frequent and makes it easier to be active without having chest pain.
No pain related info.
Upsides and benefits
LopressorAtenolol
  • A first-choice treatment to prevent chest pain (angina).
  • Makes pain episodes less frequent and makes it easier to be active without having chest pain.
  • A first-choice treatment for people who've had a heart attack.
  • Lopressor (metoprolol tartrate) lowers the risk of death during and after a heart attack.
  • Lopressor (metoprolol tartrate) is cheaper than the extended release version.
  • 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.
Downsides and risks
LopressorAtenolol
  • You need to take Lopressor (metoprolol tartrate) with food twice a day for it to work best.
  • Taking Lopressor (metoprolol tartrate) may make you feel more tired or out of breath during exercise or your normal daily routines. This gets better for most people, but for some it may not go away.
  • Not a first-choice treatment for high blood pressure, unless you have heart failure or heart disease. It can also be added to other medicines if your blood pressure is still too high.
  • Can hide symptoms of low blood sugar if you're diabetic.
  • You can't miss doses. Stopping Lopressor (metoprolol tartrate) suddenly can cause your blood pressure to go up suddenly, which raises the risk of heart attack and stroke.
  • 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.
Tips from our pharmacists for people taking the medication
LopressorAtenolol
  • You should take Lopressor (metoprolol tartrate) with or after meals.
  • Lopressor (metoprolol tartrate) can make you feel dizzy for the first few days. It can also cause fatigue and headaches.
  • Check your blood pressure 1 week after starting this medicine, and tell your doctor if it hasn't improved.
  • Can hide symptoms of low blood sugar. Be careful if you're diabetic.
  • Don't stop taking this medicine suddenly unless your doctor tells you to.
  • This is the immediate release version of the medication, so it needs to be taken twice a day. It's different from the extended release form: Toprol XL (metoprolol succinate).
  • Lowers bad cholesterol and triglycerides. Raises good cholesterol.
  • Avoid grapefruit and grapefruit juice while taking this medicine.
  • Tell your doctor if you develop sudden muscle pain, fever, or weakness.
  • Tell your doctor if you notice dark urine or yellowing in your eyes or skin.
Learn more
More about LopressorSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Lopressor (metoprolol tartrate)?
Worth itNot sureNot worth it
More about AtenololSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Tenormin (atenolol)?
Worth itNot sureNot worth it