Minipress

(Prazosin)

3.0/ 5 average rating with 48 reviewsforPrazosin
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Lowers blood pressure and makes it easier to urinate.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

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

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    $71.08
Quick facts about Prazosin
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (prazosin)

Upsides

  • 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.
People’s experience with Prazosin

48reviews so far. What do you think?

Downsides

  • 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.
How it works

Prazosin is a selective alpha blocker. It lowers blood pressure by relaxing blood vessels. It also relaxes the urethra and prostate, which makes it easier to urinate.

Quick facts about Prazosin
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (prazosin)

Dosage forms

  • Pill
People’s experience with Prazosin

48reviews so far. What do you think?

Prices and coupons

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Side effect rates for Minipress (Prazosin)

From 900 clinical trials of Prazosin when taken for high blood pressure
  • Dizziness
    10%10%
  • Headache
    8%8%
  • Drowsiness
    8%8%
  • Lack of energy
    7%7%
  • Weakness
    7%7%
  • Palpitations
    5%5%
  • Nausea
    5%5%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Prazosin.

Minipress (Prazosin)
Placebo

People taking Prazosin felt side effect more

People taking Prazosin felt side effect less

No difference

Risks and Warnings for Minipress (Prazosin)

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    • Higher risk if:
    • Age 65 years or older

    You can feel dizzy or fall from a sudden drop in blood pressure when you change positions, such as going from sitting to standing. This is called orthostatic hypotension. If you're sensitive to low blood pressure, change position slowly until your body is used to the medicine. If symptoms continues for more than a week, dose adjustment or a different medication may be needed.

Common concerns from people taking Minipress (Prazosin)

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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.

Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for Prazosin
CWeigh risks vs. benefits
Food
  • Take with food or at bedtime to avoid side effects.
Sleep
  • Can cause drowsiness, headache, dizziness, and nausea.