ghk-cu copper peptide safety adverse effects topical injectable “Is actually worth it?” is genuinely one of the most common questions in my comments, so let me finally answer it properly., The short version: peptides have real research behind them, Injectable Peptides for Anti-Aging? A

But the hose is frustrating

* Sweating * Headache * Dizziness **Very Rare Side Effects (may affect up to 1 in 10,000 people):** * Acne **Not Known (frequency cannot be estimated from the available data):** * Nerve damage (neuropathy) with prolonged use

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This is clearly impractical for several reasons: cost, nasal cavity volume limitations, and peptide solubility constraints