Your skin is probably still in good shape at your age so the collagen peptide may not show much yet. I have just begun using it myself. Some say running SS-31 first improves the energy effect from NAD, though both are said to help older users more. If you lift you might look at MOTS-c or the other two compounds mentioned, but they also recommend SS-31 first. Reta is impressive and that total loss is great to see.
I began in March at 316 pounds and have now dropped 53 pounds, averaging 2.8 pounds each week. These medicines really work. I moved over to reta roughly eight weeks ago mainly because of what I had been reading. Tirz was still effective at 7.5 mg but I was getting some stomach trouble. While both were in my system the fat loss and appetite control felt very strong. Once tirz cleared I noticed more hunger at times, yet it still does not feel like constant food thoughts. At 8 mg reta split into two 4 mg shots I have had no side effects. I swapped 1.5 mg of tirz for the same amount of reta each week until only reta remained. Around the same period I started my father on tirz so the leftover supply will not go to waste.