Compare Calan vs. Prazosin

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

Calan (Verapamil)

Prescription only

Minipress (Prazosin)

Prescription only
Lowers blood pressure and controls heart rate.

Verapamil works well to lower blood pressure and prevent chest pain, but you have to be okay with avoiding alcohol. You can't miss doses, and you might get persistent swelling.

3.8/ 7 average rating with 43 reviewsforCalan
Lowers blood pressure and makes it easier to urinate.

Prazosin is used mostly to make urination easier for men with an enlarged prostate, but it can cause dizziness.

4.0/ 7 average rating with 48 reviewsforPrazosin
Upsides
  • A first-choice blood pressure treatment for many people.
  • Calcium channel blockers work especially well for African Americans to lower blood pressure.
  • You can take it alone or with other medicines to help lower blood pressure.
  • Lowers the risk of heart attack and stroke.
  • Prevents heart-related chest pain (angina) if you take it regularly.
  • Treats certain abnormal heart rhythms.
  • Can be added to other blood pressure-lowering medicines if you need additional blood pressure control.
  • Makes urination easier in men with an enlarged prostate.
  • Helps people with PTSD get better sleep with fewer, less-intense nightmares.
Downsides
  • Calcium channel blockers can cause swelling in your limbs. If this happens for you, it probably won't get better over time, so talk to your doctor about alternatives if it bothers you.
  • Women are more likely to have side effects (especially swelling) from Verapamil than men.
  • You can't miss doses. Stopping Verapamil suddenly can cause your blood pressure to go up suddenly, which raises the risk of heart attack and stroke.
  • Not a good medication for you if you drink alcohol.
  • Not the best medicine to lower blood pressure by itself.
  • Likely to cause orthostatic hypotension. This means dizziness when you change positions (like standing up) because your blood pressure doesn't adjust quickly enough.
  • Not preferred for people 65 years or older.
Used for
Dosage forms
  • Pill
  • Extended release
  • Delayed release capsule
  • Pill
Price
Lowest price near you
$8
Find instant savings
Lowest price near you
$9.99
Find instant savings
Want to save even more money?
Sign up now for a 30-day trial and save up to 95% at Kroger, Albertsons, Safeway, and other pharmacies.
Reviews
43 
35%
think this treatment is worth it
33%
think this treatment works well
21%
think this treatment is a hassle

Have you used Calan (Verapamil)?

Leave a review
48 
46%
think this treatment is worth it
29%
think this treatment works well
15%
think this treatment is a hassle

Have you used Minipress (Prazosin)?

Leave a review
Side effects
5possible side effects
  • Constipation
    7%
  • Headache
    5%
  • Dizziness
    4%
  • Lethargy
    3%
  • Dyspepsia
    3%
See more detailed side effects
7possible side effects
  • Dizziness
    10%
  • Headache
    8%
  • Drowsiness
    8%
  • Lack of energy
    7%
  • Weakness
    7%
  • Palpitations
    5%
  • Nausea
    5%
See more detailed side effects
Risks and warnings
  • Heart failure

    Severe left ventricular dysfunction (ejection fraction <30%)

    ...and 1 more risk factors

  • Elevated liver enzymes

    History of liver disease

  • Heart rhythm problems

    History of kidney disease

    ...and 1 more risk factors

See more detailed risks and warnings
  • Low blood pressure (orthostatic hypotension)

    Age 65 years or older

See more detailed risks and warnings