In my experience, I did opt to use Finasteride after my hair transplant surgery. It definitely helped in preventing further hair loss and promoting hair growth in the transplanted areas. However, it did come with some side effects for me, like decreased libido and occasional mood swings.
If you're considering alternatives, I've also heard good things about Minoxidil and low-level laser therapy. Both can be effective in promoting hair growth without the potential side effects of Finasteride. Ultimately, it's important to consult with your doctor and weigh the benefits and risks of each option before making a decision.