Seeing as it is not legal to use paypal for sales of prescription medicine (unless you require prescriptions) I would guess that the only ones using it are dumbasses who you would not want to shop at anyways.
ok thanks gys u realy helped me , but there is one think about the payment it says ,Intgold (same that Paypal) http://www.intgold.com
so i have paypal but not that name , i think i must sign up for that site and use it is it that way they mean?
Why don't you write to a few places that sell Proscar and ask if they can accept PayPal? You never know, they might have a PayPal account but not use it for accepting payments on their site. You could also mention that PayPal have millions of members and they should consider accepting PayPal in the future as it could bring them more custom.