Propecia is a medication used to treat androgenic alopecia (pattern baldness) in men for over 20 years. It works by decreasing serum and scalp DHT (male hormone) levels.Propecia For Baldness and Hair Loss 

Lowering DHT appears to inhibit miniaturization of affected hair follicles and helps to restore miniaturized hair follicles to regrow visible hair.  Propecia regrows visible hair that appears natural. At this time it should not be used in women.  It is currently being studied in post menopausal women.

Are there any Propecia side effects and precautions?

The most common adverse reactions from this medication are erectile dysfunction – 1.3%, decreased ejaculate volume – 1.2%,
decreased sex drive – 1.8% and discontinuation of the drug due to adverse experiences – 1/2%. Other problems can include swelling, dizziness, weakness, headache and runny nose, although these are not as common.

Like many medications, finasteride should not be used in women who are pregnant, and pregnant women should not handle crushed or broken tablets.

Caution should be used in patients with liver function abnormalities as the medication can interfere with liver functions.

It’s important to be aware of the fact that stopping treatment leads to a gradual loss of benefits.

Are there natural alternatives to finasteride?

Many men and women have seen tremendous success with natural alternatives such as the ProFollica system, an effective non-prescription hair loss treatment.

How Effective is it? (men 18 to 41 with mild to moderate hair loss on the top of the scalp)

According to the latest statistics, 83% men who used it for 2 years maintained or increased hair counts. 66% men who used it for 2 years had visible hair growth

As far as dosage, the typical recommendation is 1 mg pill per day by mouth. You need to use for 3 months to see any improvement. If you don’t experience any improvement in 1 year, Propecia is not likely to help. At this point your doctor may recommend trying Rogaine as an alternative.