some blood pressure medications
male hormones (example: testosterone)
saw palmetto
soy isoflavones supplements
Tell your prescriber or health care professional about all other medicines you are taking, including non-prescription medicines. Also tell your prescriber or health care professional if you are a frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs. These may affect the way your medicine works. Check with your health care professional before stopping or starting any of your medicines.
What should I watch for while taking this medicine?
Do not donate blood until at least 6 months after your final dose of finasteride. This will prevent giving finasteride to a pregnant female through a blood transfusion.
Contact your prescriber or health care professional if there is no improvement in your symptoms. You may need to take finasteride for 6 to 12 months to get the best results.
Women who are pregnant or may get pregnant must not handle broken or crushed finasteride tablets; the active ingredient could harm the unborn baby. If a pregnant woman comes into contact with broken or crushed finasteride tablets she should check with her prescriber or health care professional. Exposure to whole tablets is not expected to cause harm as long as they are not swallowed.
Finasteride can interfere with PSA laboratory tests for prostate cancer. If you are scheduled to have a lab test for prostate cancer, tell your prescriber or health care professional that you are taking finasteride.
What side effects may I notice from this medicine?
Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):
breast enlargement or tenderness
skin rash
sexual difficulties (less sexual desire or ability to get an erection)
small amount of semen released during sex