This process requires two essential amino acids (lysine and methionine), iron (Fe 2+ ), vitamin B 6 in the form of pyridoxal 5-phosphate, niacin in the form of nicotinamide adenine dinucleotide (NAD), and may also require vitamin C (ascorbate) (4)
Thus, tissues such as muscle may have adapted to use C8-Carn as a mitochondrial substrate, independent of the acylcarnitine shuttle to allow complete oxidation of peroxisomal-derived substrates
found increased levels of mitochondrial fission proteins, Fis1 and Drp1, and reduced levels of fusion proteins, Mfn1, Mfn2, and Opa1 [79]
Therefore, the uptake of L-Carnitine is useful for athletes
In sports nutrition products, L-carnitine is usually positioned for: Fat metabolism support Energy production Endurance-focused formulas Recovery support Vegan and vegetarian sports nutrition Weight management products Liquid shots, capsules, tablets, and drink mixes From a formulation perspective, brands should pay close attention to the ingredient form
