l carnitine protein synthesis De novo L-carnitine biosynthesis. (A) is synthesised from the L-Carnitine in Mitochondria | Encyclopedia

But this is just half the picture because there are also metabolic consequences (see the article on Altered Metabolism)

Yes, it is generally safe to take multiple vitamins at once, but you need to be cautious about specific combinations that can interfere with absorption or cause side effects

Jarrow Formulas L-Carnitine capsules are an important cofactor for cellular energy production from fats.(1) This amino acid supplement provides L-carnitine 500 mg per serving, which is an amino acid found in high concentrations in muscle, heart, and liver tissues.(1) These capsules support an active lifestyle and your bodys natural cellular energy production.(1) Jarrow Formulas L-Carnitine cellular energy production support formula transports fatty acids into the mitochondria for cellular energy production and reduce amino acid and protein breakdown

Pala, L., De Pas, T

How and when to take carnitine