I'd strongly suggest that u do yr research about the drug before getting a doc to prescribe it to you. Hair loss is nothing compared to the side effects of the drug.
The generic drug name is Finasteride. Propecia is a brand name.
From the wiki:
Adverse effects
Side effects of finasteride include impotence (1.1% to 18.5%), abnormal ejaculation (7.2%), decreased ejaculatory volume (0.9% to 2.8%), abnormal sexual function (2.5%), gynecomastia (2.2%), erectile dysfunction (1.3%), ejaculation disorder (1.2%) and testicular pain. According to the product package insert, resolution occurred in men who discontinued therapy with finasteride due to these side effects and in most men who continued therapy. The PPI also states that patients have reported persisting erectile dysfunction despite discontinuing the drug. In December 2010, Merck added depression as a side effect of finasteride.[10]
Prostate cancer
The FDA has added warning to finasteride about an increased risk of high-grade prostate cancer.[11] Whilst the potential for positive, negative or neutral changes to the potential risk of developing prostate cancer with finasteride has not been established, evidence has suggested it may temporarily reduce the growth and prevalence of benign prostate tumors, but could also mask the early detection of prostate cancer. The primary area for concern is for patients who may develop prostate cancer whilst taking finasteride for benign prostatic hyperplasia, which in turn could delay diagnosis and early treatment of the prostate cancer, thereby potentially increasing the risk of these patients developing high-grade prostate cancer.
Sexual side effects
There have been case reports of persistent diminished libido or erectile dysfunction, even after stopping the drug.[16] In December 2008, the Swedish Medical Products agency concluded a safety investigation of finasteride and subsequently advised that the use of finasteride may result in irreversible sexual dysfunction. The Agency's updated safety information lists difficulty in obtaining an erection that persists indefinitely, even after the discontinuation of finasteride, as a possible side effect of the drug.[17] The UK's Medical and Healthcare Products Regulatory Agency (MHRA) say that erectile dysfunction that persists once use of finasteride has stopped has been reported to them.[18] Similar labeling changes have been made by the Italian government. For a period of time there was a discrepancy between European and North American warning labels regarding the risks of developing persistent sexual side effects from taking Propecia but after two years in April 2011 Merck revised the United States' warning in consumer and medical leaflets to include erectile dysfunction that may persist after stopping finasteride.[19] In April 2012, the FDA chose to approve Merck's proposal from 2011 only after the warning label was further strengthened to include reports of persistent libido disorders, ejaculation disorders, orgasm disorders, and decreased libido. [20][21][22]
Anxiety and depression
Finasteride has been found to robustly induce anxious and depressive behaviors in animals.[23] Accordingly, its clinical use has been associated with depression and anxiety in both men and women in at least several reports in the medical literature.[24] In one study, at a dose of 1 mg per day, finasteride induced moderate to severe depression in 19 of 23 or 83% of participants, including notably in all of the female patients.[8] In addition, marked anxiety occurred comorbidly with the depressive symptoms in some cases. Another study with a larger sample size of 128 men, though no women, also at a dose of 1 mg per day, found that finasteride increased both BDI and HADS depression scores significantly.[25] It also increased HADS anxiety scores, though this was not found to be statistically significant. The authors concluded that finasteride should be prescribed cautiously for patients with a high risk of depression.
In late 2010, Merck revised the label of its Propecia formulation of finasteride in the United States and Canada to add depression to the list of possible side effects.[26]
Male breast cancer
In December 2009, the Medicines and Healthcare products Regulatory Agency in the UK announced new drug safety advice on finasteride and the potential risk of male breast cancer. The agency concluded that, although overall incidence of male breast cancer in clinical trials for finasteride 5 mg was not significantly increased, a higher risk of male breast cancer with finasteride use cannot be excluded. A warning on this risk will be included in the product information.[27] Merck revised the United States' warning in consumer and medical leaflets to include the risk of male breast cancer.[19]
Teratogenicity
Finasteride is in the FDA pregnancy category X. This means that it is known to cause birth defects in a fetus. Women who are or who may become pregnant must not handle crushed or broken finasteride tablets, because the medication could be absorbed through the skin. Finasteride is known to cause birth defects in a developing male baby. Exposure to whole tablets should be avoided whenever possible, however exposure to whole tablets is not expected to be harmful as long as the tablets are not swallowed. It is not known whether finasteride passes into breast milk, and thus should not be taken by breastfeeding women. Finasteride may pass into the semen of men, but Merck states that a pregnant woman's contact with the semen of a man taking finasteride is not an issue for concern. Finasteride is known to affect blood donations, and potential donors are typically restricted for at least a month after their most recent dose.