can l-carnitine be injected subcutaneously Injection L-Carnitine injections for boosted daily
Description
Sublingual transport is the best way to get B12 absorption (research has proven it's even better than B12 injections for increasing B12 sufficiency)
That puts it in a fundamentally different category than unregulated peptide vendors

Biochem Biophys Res Commun (2008) 373(1):1514

Neurotherapeutics (2018) 15:3659
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Common dosing ranges from 600-1200 mg per dose, typically administered 1-3 times weekly for 4-8 weeks