Hair Transplant Without Propecia

I’m 29 years old and suffering from miniaturization. In my early twenties I started noticing that my hair is thinning. First I tried to hide it but as far as you can assume it was impossible to hide the thinning and almost gone hair. Therefore I finished wearing a hat most of the time. The worse thing is that my head doesn’t look nice with a really short hair so I lived very g-hard time when the last year I felt that the number of hairs that Iose in a day increased. I found myself counting them one by one. My hair doesn’t look the same. It’s thin. I’m planning to have hair transplantation.  I heard about “Propecia”. I read that it helps hair thickening and that has a regrowth effect on the hair..  Due to the side effects I wonder what do you think? Should I use propecia and see is there any side effect or just go for the surgery without it?