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No human PK data exist for injected GHK-Cu: no half-life, no distribution, no metabolic fate of the copper, no accumulation data

These aren't necessarily absolute GHK-Cu contraindications for every single case, but they represent situations where the risk-benefit analysis becomes much more complicated

Many peptide injections are self-administered at home after a doctor provides training

We generally suggest wearing one patch per week

Topical vs Injectable for Hair GHK-Cu is available in both topical and injectable formats

But many people find it to be less of a hassle than taking pills every day or going to an IV clinic for a drip