nope, no meds., and I am 35 years old.
I THINK so far so good, I can obviously tell when I examine closely where my native hair begins and where he transplanted, and it doesn't seem to have gone further back. My hair loss was weird, I felt it happened al of a sudden when I was like 24-25 and it didn't really go back any further. I could be wrong, but nothing is noticeable yet..hopefully stays this way!