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Dear
finasteride is a 5-alpha-reductase inhibitors are a group of medicines that block the action of 5-alpha-reductase, the enzyme that converts testosterone into
dihydrotestosterone. This results in increased levels of testosterone and decreased levels of dihydrotestosterone; an overabundance of dihydrotestosterone has been implicated in benign
prostatic hyperplasia (BPH) and
prostate cancer. The scalp of men with androgenetic alopecia (male-pattern baldness) has also been found to contain increased amounts of dihydrotestosterone and miniaturized hair follicles compared with men who have a lot of hair.
It may cause impotence, loss of interest in sex, or trouble having an orgasm,abnormal ejaculation;
swelling in your hands or feet,swelling or tenderness in your breasts,
dizziness, weakness,feeling like you might pass out,headache,runny nose etc.
please consult your doctor if you are facing side effects he will examine and treat you accordingly.
Hope I have answered your query. Let me know if I can assist you further.