Protein Supplements after a Hair Transplant? (photo)

I had a H.T. 2 months ago in the upper forehead area and a month ago I started going to the gym. After my H.T. I started using finasteride 1 mg daily along with topical treatment on the scalp because I also have thinning hair on the crown. I want to ask if it is safe to start taking protein supplements like whey protein or amino acids or protein bars to increase my muscle mass. Also I use a human growth releaser before bed called Secratropin, but I use only 2 caps instead of 5 it writes on it