l-carnitine safety pregnancy can be taken during Capsules 520mg – Plant-Based Amino & Energy Support – CNPUSA Is it safe to take – PDF) Oral L-carnitine and pregnancy:

Renal and hepatic effects: Long-term or high-dose use has been associated in case reports with adverse effects on kidney and liver function

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There have been varying reports of urinary free-carnitine excretion with PEM as either increasing [108] or decreasing [109]

Mechanically the skin becomes stiffer and more fragile with a loss of resilience [24] making aged skin more susceptible to damage

Neuro-COVID long-haulers exhibit broad dysfunction in T cell memory generation and responses to vaccination

This means you can burn more calories and push yourself harder, so you can see results faster