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Regulatory status at a glance What this means in practice If you use a topical GHK-Cu serum, it is a legally sold cosmetic, not an approved drug
J Comp Neurol 505:158165 Rosado JO, Salvador M, Bonatto D (2007) Importance of the trans-sulfuration pathway in cancer prevention and promotion
95% CI 0.380.99
Human trials need to define the product, route, dose, comparator, outcomes, adverse-event collection, and follow-up before those claims can be tested reliably
(See Figure AB) Figure AB Step 29: Pull the orange needle cap straight off and keep it aside
Neither approach is inherently better
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