Propecia is a prescription hair loss treatment. It has been researched, and it is taken in pill form. This pill can also be found online for a more expensive price generally speaking than you would pay with insurance, but some also charge your insurance for you for a cheaper price without a doctor’s prescription. Frankly, it does work. I’ve seen it work personally speaking, and within a few weeks, you see these little baby hairs and the hairline start coming back. But the side effects are not fun. Some men experience a decrease in sexual vitality, which some men would consider more detrimental to the user, and it’s definitely only for men at this time. Studies have shown essentially speaking that 9 out of 10 men who took Propecia saw significant results. However, the side effects are not only sexual. There is a reason it is heavily monitored. It can actually affect a blood test called PSA or prostate specific antigen. It tests for prostate cancer, and obviously if that test is somehow thrown off base, it can cause serious problems. it can also cause ejaculation problems, breast tenderness and enlargement, as well as testicular pain. There can be lumps, pain, or discharge in general that you should report to your doctor, and it is without question not appropriate for everyone.