l carnitine 2000mg MARNYS® L-Carnitine 2000 20 vials highly bioavailable Nature's Lab Acetyl L-Carnitine 2000mg,

(PubMed) Smith WA, Fry AC, Tschume LC, Bloomer RJ

Propionyl-L-carnitine Propionyl-L-carnitine is not approved by the US FDA for use as a drug to prevent or treat any condition

Depression A 2018 meta-analysis identified 12 randomized controlled trials, including 791 participants, that examined the effect of ALCAR on symptoms of depression (95)

For example, people with liver or kidney disease or who are overweight or obese are known to have a carnitine deficiency or lower levels than otherwise healthy people

While L-carnitine supplementation normalized plasma carnitine concentration in vegetarians to that observed in omnivores, there was no effect on energy metabolism and physical performance compared to no supplementation and between vegetarians and omnivores (131)