The second is dose and route translation : even where an effect is real in a mouse, the human-equivalent dose is not a simple body-weight scaling, and as the route section above stressed there is no human bioavailability figure to anchor an oral-versus-injected comparison
With regular injections, you can ensure consistent B12 levels without the hassle of remembering to take pills
That said, side effects can occur: Common side effects (mild and transient) Injection site reactions: Redness, mild swelling, or tenderness at injection sites
Two things need to happen for your body to absorb vitamin B12 from the food you eat: Your digestive system can then absorb B12
Zinc also plays a crucial role in wound healing, keeping skin healthy and promoting tissue repair
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