I have been taking this since March and I have lost half my hair,...

YES the hair did grow back, slowly! At least there maybe hope if you stop or try something different. I started taking Hair, Skin and Nails from GNC as soon as I noticed it falling out. Really any vitamin with high amounts of biotin will help! Also a little FYI, I researched other natural alternatives for hair loss through the internet and stumbled across a chinese herb I have been taking. I beleive it has helped with the regrowth. I do believe it was a side effect from the medicine, because it did eventually grow back after I discontinued use of the Wellbutrin. Good luck! Ihope you find this useful.