FWIW, my HT doctor said I could start back on supplements right away. I did after every HT and have never had excessive bleeding FWIW. (I have no idea about the laser comb though.)
Plus, I ate so healthy it would make you sick to your stomach how healthy I ate for the first two weeks everytime I've gotten surgery. (Any kind of surgery, not just an HT.)
Every HT, I healed quickly (i.e., I've had three HT's, the last one on July 15th). You've got to eat your fresh fruits and veggies till the cows come home after surgery IMHO. (Of course, we should all eat more of that stuff anyways.)
My HT doctor bragged how well he made the donor scar and stitched it up, and how well I healed after my last two HT's. (I just smiled and complimented him, but knew I had a BIG part in that by eating so sickeningly healthy for those first two weeks.)
I eat fairly healthy anyways but I really kick it into high gear whenever I get surgery. I honestly think it helps ALOT in the healing process. I'm sure it doesn't hurt.