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Venkatesh,this type of hair loss is called androgenetic alopecia
....Tablet and lotions take long time to work in such a case and would only work if you have fine hair left on scalp
.The result of medicines in such cases is temporary.If you have completely lost hair and baldness
is visible then no cream or lotion or tablet would work.Then the only thing which would work is HAIR TRANSPLANTATION
.In such cases we take a thin strip of hair from back of your scalp and section it in to small hair follicles .This is then implanted on the bald patch.This would then grow long and thick.We've been doing this since last 12 yrs with great result.You can get details in the website..www.apollobsr.com.(dermatology section).