Certainly, there are people who have been identified with L-carnitine deficiency, often due to transporter issues (difficulty getting L-carnitine into cells, or absorbing it from the diet)
J Neurochem 134:36 Gibson GE, Xu H, Chen HL, Chen W, Denton TT, Zhang S (2015) Alpha-ketoglutarate dehydrogenase complex-dependent succinylation of proteins in neurons and neuronal cell lines
Introduction Carnitine (-hydroxy--trimethylammonium butyrate) is a water-soluble quaternary amine with several vital metabolic functions, with the main one being the transport of long-chain fatty acids across the inner mitochondrial membrane, thus providing a substrate for -oxidation and energy production [1]
Concentrations of choline-containing compounds and betaine in common foods
This doesnt mean it melts fat instantly, but it improves how your body accesses fat for energy potentially supporting fat loss as part of a broader wellness plan