These effects are usually very mild and pass quickly
AHK-Cu reduces the appearance of fine lines through two mechanisms
If the patient has an autoimmune disease or another condition that prevents the stomach from making intrinsic factor, then Vitamin B12 injections may be a better option
(PubMed) Wu K, Helzlsouer KJ, Comstock GW, Hoffman SC, Nadeau MR, Selhub J
But as we age, natural production slows down
More specifically, the term vitamin B6 refers to six separate compounds called vitamers. These are [1]: Pyridoxine Pyridoxal Pyridoxamine Pyridoxine 5-phosphate Pyridoxal 5-phosphate Pyridoxamine 5-phosphate All of these compounds work together to fulfill the roles of B6 vitamins