Vitamin B12 is an essential vitamin and a cofactor for the methionine synthase enzyme, which is a critical step in the production of DNA, RNA, proteins, and dozens of other molecules
The injection typically includes MIC components (methionine, inositol, and choline) and vitamin B12 and are often used as part of a medical weight management program to support improved fat metabolism, increased energy levels, better liver function, and enhanced mood and mental clarity
In one mouse study, researchers found that the peptide reduced the pain felt by the animals in their paws when placed on a mildly hot plate. The authors explained that this could be because GHK is similar in structure to cimetidine, a histamine H2 receptor antagonist sometimes given to reduce pain in certain digestive conditions.3 10 In rodents, doses as low as 0.5mg/kg were found to be effective in delivering these anti-pain effects.25 In a 70kg human, an equivalent dose would be around 5.6mg, though thats likely higher than necessary: pharmaceutical-grade GHK-Cu normally ranges from 0.5 mg to 2.5mg per injection
For skin tightening, we do see that patients with mild skin laxity can get great results from a single treatment, whereas those patients with more severe skin looseness and textural issues may need more
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