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
Regarding substances of abuse other than food, the effects of GLP1RAs on alcohol consumption in laboratory animals, such as male rats, mice and non-human primates have been investigated (122,123)
If you miss three or more consecutive days, you may experience mild nausea when resuming due to reduced tolerance
how reimbursement dynamics will shape penetration in the US and the EU5 (France, Germany, Italy, Spain and the UK)