Compare Proscar vs. Cardura

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

Proscar
(Finasteride)

Cardura
(Doxazosin)

Improves prostate symptoms. Proscar (Finasteride) works well for mild to moderate symptoms of BPH. When men have more severe symptoms, it can be combined with doxazosin or other medicines for added benefits.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.
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Reviews & ratings
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Reviews for Cardura (Doxazosin)
38%
+9% vs. Proscar (Finasteride)
21%
8% vs. Proscar (Finasteride)
18%
+11% vs. Proscar (Finasteride)
Side effects
ProscarCardura
  • Impotence 4%
  • Decreased libido 3%
  • Decreased volume of ejaculate 3%
  • Breast enlargement 1%
More Proscar 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 »
How it works
ProscarCardura
Proscar (Finasteride) blocks the action of 5-alpha-reductase, an enzyme responsible for changing testosterone into dihydrotestosterone (DHT). Lower DHT levels prevents the prostate from growing.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.
Type of medication
ProscarCardura
5-alpha reductase inhibitorPrescription only
Antihypertensive
Alpha blocker
Prescription only
Available as
ProscarCardura
  • Pill
  • Pill
  • Extended release
Used for (click to learn more)
ProscarCardura
Risk factors for serious side effects
ProscarCardura
    • Men age 55 or older
    • Women of childbearing age
    • Breast-feeding
    • Current liver problems
    • Men who are older
    • Taking medicines that cause sexual side effects
    • Medical conditions that cause sexual side effects
    Detailed Proscar (Finasteride) risks & warnings »
    • Age 65 years or older
      • Cataract surgery
      Detailed Cardura (Doxazosin) risks & warnings »
      Pregnancy category
      ProscarCardura
      XFDA pregnancy category (Unsafe)

      Research studies with real people or animals found harmful effects on unborn babies. If you’re pregnant, the risks to your unborn baby outweigh the benefits.

      See the FDA package insert
      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
      Alcohol
      No specific alcohol-related info.No specific alcohol-related info.
      Food
      • Take Proscar (Finasteride) once daily, about the same time each day, with or without food.
      • Take the extended release tablet with breakfast.
      Kidneys and liver
      No specific kidneys and liver-related info.No specific kidneys and liver-related info.
      Sex
      • Can cause a rash, the inability to get an erection, low sex drive, and reduced amount of sperm.
      • It’s not that common, but some people had sexual side effects that continued after they stopped taking Proscar (Finasteride) for BPH. Side effects included problems with erection and orgasm, low sex drive, and reduced amount of sperm. It was more likely to happen in older men, taking medicines that have sexual side effects, and had conditions that cause sexual problems.
      • 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.
      Sleep
      No specific sleep-related info.No specific sleep-related info.
      Weight
      No specific weight-related info.No specific weight-related info.
      Upsides and benefits
      ProscarCardura
      • It's an option for men who have symptoms of benign prostatic hyperplasia (BPH) and either don’t want surgery or aren’t good candidates it.
      • In studies, Proscar (Finasteride) improved BPH symptoms during the first year of taking it. This effect continued for another 5 years.
      • Men taking Proscar (Finasteride) have less difficulty urinating and don't need BPH-related surgery as often as others.
      • Can be combined with doxazosin, an alpha-adrenergic antagonist, if your symptoms are more severe. Using both together can improve symptoms and improve BPH symptoms.
      • A first-choice treatment for enlarged prostate. Makes it easier to urinate.
      Downsides and risks
      ProscarCardura
      • Women who can get pregnant shouldn’t handle broken tablets. Proscar (Finasteride) tablets are coated and prevent contact with the active medicine unless they split or break.
      • You need to take Proscar (Finasteride) for at least 6 months before your prostate gets small enough for symptoms to improve.
      • Can cause a rash, the inability to get an erection, low sex drive, and reduced amount of sperm.
      • Proscar (Finasteride) can cause PSA levels to decrease to about 50% of what it was before you started the medication. This will be considered your new starting point for PSA testing and any PSA tests you have will be compared to this going forward.
      • 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.
      Tips from our pharmacists for people taking the medication
      ProscarCardura
      • Take Proscar (Finasteride) once daily, about the same time each day, with or without food.
      • Women who can get pregnant shouldn’t touch Proscar (Finasteride) tablets.
      • If you’re taking Proscar (Finasteride) with doxazosin, you can take both at the same time or take the doxazosin closer to bedtime to avoid dizziness.
      • 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.
      Learn more
      More about ProscarSide effectsReviews & ratingsAlternativesFDA package insert
      More about CarduraSide effectsReviews & ratingsAlternativesFDA package insert