l carnitine deficiency L-carnitine levels decrease with age, contributing to aging and a decline in mitochondrial function. The list doesn't stop there. L-carnitine supports: 🦵🏼Joint health Carnitine Deficiency: What Is It,

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Fructose-1,6-bisphosphate prevents pregnancy loss by inducing decidual COX-2 + macrophage differentiation

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Topical makes the most sense for: Facial skin texture, fine lines, hydration Scalp application for localized hair growth Scar treatment or post-procedure recovery on a specific area Patients who want to fold GHK-Cu into an existing skincare routine Injectable makes the most sense for: Systemic wound healing (especially internal or in areas you can't easily apply cream) Joint and connective tissue support (topical simply can't penetrate deep enough) Broader anti-aging goals beyond the skin surface Patients already running other injectable peptide protocols (CJC-1295/ipamorelin, BPC-157, TB-500) Here's the thing: for joints specifically, there's no argument