Metformin, commonly prescribed for type 2 diabetes, is well-known to cause diarrhoea and is also associated with B12 deficiencymeaning patients may be taking both simultaneously
Kuroda K, Nakashima J, Kanao K, Kikuchi E, Miyajima A, Horiguchi Y, Nakagawa K, Oya M, Ohigashi T, Murai M
Alpha-Liponsure bei diabetischer Polyneuropathie (esanum.de) berblick zur Wirkung von Alpha-Liponsure bei oxidativem Stress, Nervenschutz und Stoffwechseluntersttzung
GHK-Cu has a variety of roles in the human body including, but not limited to promoting activation of wound healing, attracting immune cells, antioxidant and anti-inflammatory effects, and stimulating collagen and glycosaminoglycan synthesis to help reduce wrinkles and fine lines in skin
Honestly, getting this part right from the start can make or break your entire study