Compare Calan vs. Prazosin

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

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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.

2.9/ 5 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.

3.0/ 5 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.
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Used for
Dosage forms
  • Pill
  • Extended release
  • Delayed release capsule
  • Pill
Price
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Reviews
43 reviews so far
35%
saidit'sworth it
33%
saiditworked well
21%
saidit'sa big hassle

Have you used Calan (Verapamil)?

Leave a review
48 reviews so far
46%
saidit'sworth it
29%
saiditworked well
15%
saidit'sa big 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 risk factors
  • Heart failure
    • Severe left ventricular dysfunction (ejection fraction <30%)
    • Taking beta-blockers
  • Low blood pressure
  • Elevated liver enzymes
    • History of liver disease
  • Heart rhythm problems
    • History of kidney disease
    • History of liver disease
See more detailed risks and warnings
  • Low blood pressure (orthostatic hypotension)
    • Age 65 years or older
See more detailed risks and warnings