how often should you take l-carnitine shots doesn't magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and you'll feel the difference @Marybosch shows us L-Carnitine will boost your L-Carnitine Supplements: Benefits, Dosage and

Studies show that oral L-Carnitine supplementation can decrease fat mass, preserve muscle during exercise, and reduce muscle fatigue

However, during high-fat diet (HFD) feeding, obesity and insulin resistance, the accumulation of medium-chain and long-chain acylcarnitines due to incomplete -oxidation may negatively regulate the expression of nuclear-encoded mitochondrial genes, further reducing mitochondrial number and function and creating a vicious metabolic cycle [33]

It often suggests these compounds merely add to what could be obtained from food, but this isnt always accurate

Here are some of Zenkers recs: So, L-carnitine is a lot simpler than its name lets on