Drugs to maintain, surgery to restore. Plain, and simple.
it's always recommended to utilize medication first, before investing time, and money in a hair transplant. Medication will help stabilize any existing hair loss, and maximize survival.
Having a hair transplant without finasteride is beyond retarded, especially for those who are on the advance scale, and have aggressive loss at an early age. Personally, after my third hair transplant even on medication I still lost few millimeters behind my temples.