Is there anything i can take to prevent thining hair and hair loss. im a 49 year old male white?

Propecia (finasteride): Finasteride 1 mg will slow and reverse hair loss in most men. It takes two or more months to start seeing effect. The laser comb also claims to slow hair loss.

Propecia (finasteride): You can try propecia. It's a lower dose of the drug finasteride, originally marketed as Proscar for enlarged prostate, but has been shown to be beneficial for hair loss. Check with your doctor.