Compare Propranolol vs. Losartan

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

Inderal
(propranolol)

Cozaar
(losartan)

Lowers blood pressure and controls heart rate. Inderal (Propranolol) is good for treating many heart problems and other problems in the body, but it has more side effects than other beta blockers. 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.
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.39Propranolol
Reviews for Propranolol
66%
of people (All ages) say Propranolol is worth it
62%
say it works well
15%
say it's a big hassle
Have you used Inderal (propranolol)?
Worth itNot sureNot worth it
Reviews for Losartan
57%
+9% better vs. Propranolol
48%
+14% better vs. Propranolol
16%
+1% better vs. Propranolol
535 reviews
Have you used Cozaar (losartan)?
Worth itNot sureNot worth it
Side effects
PropranololLosartan
  • Dizziness 5%
  • Fatigue 2%
  • Constipation 3%
More Propranolol side effects »
  • Upper respiratory infection 1%
  • Dizziness 1%
  • Back pain 1%
  • Nasal congestion 1%
  • Urinary tract infection 6%
  • Diarrhea 5%
  • Muscle weakness/fatiguea/fatigue 4%
  • Low red blood cells 3%
  • Low blood sugar 4%
  • Back pain 2%
More Losartan side effects »
How it works
PropranololLosartan
Inderal (Propranolol) is an alpha and 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
PropranololLosartan
Prescription onlyPrescription only
Available as
PropranololLosartan
  • Pill
  • Extended release
  • Liquid
  • Pill
Used for
PropranololLosartan
Risk factors for serious side effects
PropranololLosartan
  • Suddenly stopping Inderal (Propranolol)
  • Major surgery requiring anesthesia
  • Diabetes
  • Concurrent use of non-dihydropyridine calcium channel blockers, digoxin or clonidine
Detailed Inderal (propranolol) 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

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.

Kidneys and liver
PropranololLosartan
No kidneys and liver related info.
  • 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.
Upsides and benefits
PropranololLosartan
  • A first-choice treatment to prevent chest pain (angina).
  • A first-choice treatment for heart failure, heart attack, heart valve disorders, and abnormal heart rhythm.
  • Also treats and prevents many non-heart problems, such as tremors, anxiety, migraines, and liver disease symptoms.
  • 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
PropranololLosartan
  • 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.
  • Has more side effects than some beta blockers because it crosses into the brain and central nervous system.
  • Not a first-choice treatment for high blood pressure according to the latest guidelines, except if you have heart failure or heart disease. As a second choice, your doctor might add it to medicines you're already taking 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 Propranolol 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
PropranololLosartan
  • 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.
  • Can cause insomnia and fatigue.
  • Can hide symptoms of low blood sugar. Be careful if you're diabetic.
  • Don't stop taking this medicine suddenly.
  • 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.
Learn more
More about PropranololSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Inderal (propranolol)?
Worth itNot sureNot worth it
More about LosartanSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Cozaar (losartan)?
Worth itNot sureNot worth it