I am 20 years old, taking Finasteride for hair loss for the last 6 months. Is it safe?

Yes, this is a safe treatment for hair loss, but does have some possible side effects. I suggest seeing a hair loss expert to evaluate and go over your condition and provide you information about your best treatment options. There are great non-invasive options like prp and progesterone which work well with Finasteride. See an expert. Best, Dr. Emer

Yes,Finasteride(Propecia) is safe.The major side effect is a decrease in sex drive(libido) or sexual function.This occurs in about 1-2% of people taking the medication and is generally reversible upon stopping it.

finasteride is a kind of medicine that has discussions about side effects but it has an approval from FDA. İts a good method for hair loss

Finasteride blocks about 60% of circulating DHT by blocking 1 of the 3 DHT receptors. Most people taking finasteride do see some results and about 10% of those taking it experience side effects.  If you are interested in seeing better results with lower incidence of side effects I would recommend seeing a hair loss specialist who focusses on stopping hair loss and regrowing hair who can recommend more effective solutions than Finasteride.