Glycine and NAC
Glycine and NAC were incredible and felt like a must-have. Continued use seemed to heal a cheek dimple after NAD had stopped helping. About 600 mg was good; larger amounts up to 2400 mg made the face puffy and caused pressure in the head. Large amounts also seemed to stop the muscle-building effects of B12. The combination helped sustain energy after a hard day's work, while NAC without glycine caused weakness and difficulty walking uphill.