Most types of medicines can cause potential side effects. However, not everyone will experience them. If any of the side effects continue or become troublesome, then speak with your doctor or pharmacist.
The most common ones for Propecia include:
- reduced libido (affecting about 2 in 100 men)
- erectile problems
- breast tenderness
- low mood
- allergic-type reactions
Women should not handle the tablets
Finasteride may cause harm to an unborn baby. Because of this, women who are pregnant should not handle the tablets.
Propecia in the semen
Very small amounts of finasteride will be in your semen while you are taking this medicine, less than 0.001% of the 1 mg dose per ejaculation, has been detected in the seminal fluid of men taking Propecia. Studies have indicated that this amount is unlikely to pose a risk to the developing male foetus.
PSA blood test
Propecia can also affect the results of a PSA blood test used to test for prostate cancer. If you are having a PSA test done then tell your doctor you are taking (Propecia) finasteride.