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Propecia (Finasteride) Side Effects
Propecia (Finasteride) may cause side effects. Clinical studies
showed that side effects were uncommon and did not affect
most men. Tell your doctor if any of these symptoms are severe
or do not go away:
- impotence (inability to have or maintain an erection)
- decreased libido (interest in sex)
- decreased volume of ejaculate (amount of semen)
Some side effects can be serious. If you experience any of
these symptoms, call your doctor immediately:
- changes in the breasts such as lumps, pain, or nipple
discharge
A small number of men had sexual side effects, with each
occurring in less than 2% of men. These included less desire
for sex, difficulty in achieving an erection, and a decrease
in the amount of semen. These side effects went away in men
who stopped taking Propecia because of them. In addition,
these side effects decreased to 0.3% or less by the fifth
year of treatment.
In general use, the following side effects have been reported:
allergic reactions including rash, itching, hives, and swelling
of the lips and face; problems with ejaculation; breast tenderness
and enlargement; and testicular pain. You should promptly
report to your doctor any changes in your breasts such as
lumps, pain, or nipple discharge. Call your doctor if you
have any unusual problems while taking Propecia (Finasteride).
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