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Proscar vs. Cialis

Are Proscar and Cialis the Same Thing?

Proscar (finasteride) and Cialis (tadalafil) are used to treat male urologic problems.

Proscar is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate.

Cialis is used for treating impotence (erectile dysfunction, or ED).

Proscar is an inhibitor of steroid Type II 5a-reductase and Cialis is a phosphodiesterase inhibitor.

Side effects of Proscar and Cialis that are similar include abnormal ejaculation, dizziness, or headache.

Side effects of Proscar that are different from Cialis include impotence, loss of interest in sex, trouble having an orgasm, swelling in your hands or feet, breast swelling or tenderness, weakness, feeling faint, runny nose, or skin rash.

Side effects of Cialis that are different from Proscar include flushing (redness or warmth of the face, neck, or chest), stomach upset, diarrhea, flu-like symptoms (such as stuffy nose, sneezing, or sore throat), memory problems, muscle or back pain, nausea, low blood pressure, blurred vision and changes in color vision, and prolonged erections (priapism).

Proscar may interact with other drugs.

Cialis may interact with rifamycins, antibiotics, antifungals, antidepressants, barbiturates, drugs to treat high blood pressure or a prostate disorder, heart or blood pressure medications, HIV or AIDS medications or seizure medications.

What Are Possible Side Effects of Proscar?

Common side effects of Proscar include:

  • impotence,
  • loss of interest in sex,
  • trouble having an orgasm,
  • abnormal ejaculation,
  • swelling in your hands or feet,
  • swelling or tenderness in your breasts,
  • dizziness,
  • weakness,
  • feeling faint,
  • headache,
  • runny nose, or
  • skin rash.

In some men, Proscar can decrease the amount of semen released during sex. This is harmless. Proscar may also increase hair growth. The sexual side effects of Proscar may continue after you stop taking it. Talk to your doctor if you have concerns about these side effects.

What Are Possible Side Effects of Cialis?

Common side effects of Cialis include:

  • flushing (redness or warmth of the face, neck, or chest),
  • headaches,
  • stomach upset,
  • diarrhea,
  • flu-like symptoms (such as stuffy nose, sneezing, or sore throat),
  • memory problems,
  • muscle or back pain,
  • nausea,
  • low blood pressure,
  • dizziness,
  • blurred vision and changes in color vision,
  • abnormal ejaculation, and
  • prolonged erections (priapism).

What Is Proscar?

Proscar (finasteride) is an inhibitor of steroid Type II 5a-reductase, that works by decreasing the amount of a natural body hormone dihydrotestosterone (DHT) that causes growth of the prostate, and is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate. Proscar is available in generic form.

What Is Cialis?

Cialis is a prescription medicine taken by mouth for the treatment of:

  • men with erectile dysfunction (ED)
  • men with symptoms of benign prostatic hyperplasia (BPH)
  • men with both ED and BPH

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What Drugs Interact With Proscar?

Proscar may interact with other drugs.

What Drugs Interact With Cialis?

Do not take Cialis if you:

  • take any medicines called "nitrates".
  • use recreational drugs called "poppers" like amyl nitrite and butyl nitrite.
  • take any medicines called guanylate cyclase stimulators, such as riociguat.
  • are allergic to Cialis or Adcirca, or any of its ingredients.

Call your healthcare provider or get help right away if you have any of the symptoms of an allergic reaction listed above.

How Should Proscar Be Taken?

The recommended dose of Proscar is one tablet (5 mg) taken once a day.

How Should Cialis Be Taken?

Take Cialis exactly as your healthcare provider prescribes it. Your healthcare provider will prescribe the dose that is right for you.

Some men can only take a low dose of Cialis or may have to take it less often, because of medical conditions or medicines they take.

Do not change your dose or the way you take Cialis without talking to your healthcare provider. Your healthcare provider may lower or raise your dose, depending on how your body reacts to Cialis and your health condition.

Cialis may be taken with or without meals.

If you take too much Cialis, call your healthcare provider or emergency room right away.

QUESTION

Testosterone is a chemical found only in men. See Answer
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Reviewed on 4/2/2019
References

Merck. Proscar Product Information.
https://www.merck.com/product/usa/pi_circulars/p/proscar/proscar_pi.pdf
Lilly. Cialis Product Information.
https://pi.lilly.com/us/cialis-pi.pdf
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