Compare Cardura vs. Rapaflo

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



Lowers blood pressure and makes it easier to urinate. For men, Doxazosin will help make it easier to urinate so that you're not getting up a lot at night. It's a last-choice treatment for high blood pressure.Coming soon.
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Reviews & ratings
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Reviews for Cardura (Doxazosin)
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101 reviews

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Side effects
  • Dizziness 10%
  • Fatigue/feeling unwelle/malaise 6%
  • Fatigue 6%
  • Drowsiness 4%
  • Inflammation inside the nose 2%
  • Swelling due to excess fluid 1%
  • Vision abnormal 1%
  • Vertigo 1%
  • Sexual dysfunction 1%
  • Pain 1%
More Cardura side effects »

We haven’t found good data for Rapaflo side effects.

FDA side effect reports for Rapaflo »
How it works
Doxazosin is a selective alpha blocker. It relaxes the urethra and prostate, which makes it easier to urinate. It also lowers blood pressure by relaxing blood vessels.Coming soon.
Type of medication
Alpha blocker
Prescription only
Coming soon.
Available as
  • Pill
  • Extended release
  • Pill
Used for (click to learn more)
  • Benign prostatic hyperplasia
Risk factors for serious side effects
  • Age 65 years or older
    • Cataract surgery
    Detailed Cardura (Doxazosin) risks & warnings »
    Coming soon.
    Pregnancy category
    CFDA pregnancy category (Weigh risks vs. benefits)

    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.

    See the FDA package insert
    BFDA pregnancy category (Probably safe)

    Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

    See the FDA package insert
    No specific alcohol-related info.No specific alcohol-related info.
    • Take the extended release tablet with breakfast.
    No specific food-related info.
    Kidneys and liver
    No specific kidneys and liver-related info.No specific kidneys and liver-related info.
    • Rare reports of a painful erection unrelieved by sex have been reported by men who take Cardura (Doxazosin), which is also called priapism. Contact your doctor immediately if you develop this as impotence can happen if this isn't treated in time.
    No specific sex-related info.
    No specific sleep-related info.No specific sleep-related info.
    No specific weight-related info.No specific weight-related info.
    Upsides and benefits
    • A first-choice treatment for enlarged prostate. Makes it easier to urinate.
    Coming soon.
    Downsides and risks
    • A last-choice treatment for high blood pressure because other medicines are more effective at preventing heart disease. Your doctor might add it to a medicine you're already taking if your blood pressure is still too high.
    Coming soon.
    Tips from our pharmacists for people taking the medication
    • Can cause dizziness or fainting 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 fatigue or headache.
    • Take the extended release tablet with breakfast.
    • You might need to check your blood pressure from time to time while taking this medicine.
    • If side effects don't go away, talk to your doctor about alternatives.
    Coming soon.
    Learn more
    More about CarduraSide effectsReviews & ratingsAlternativesFDA package insert
    More about RapafloSide effectsReviews & ratingsFDA package insert