Whey (made from milk) naturally contains some L-carnitine, and plant-based sources contain it in small amounts, like nuts, seeds, whole grains, and some fruits and vegetables (like avocados and asparagus)
Kamei Y, Miura S, Suzuki M, Kai Y, Mizukami J, Taniguchi T, Mochida K, Hata T, Matsuda J, Aburatani H, et al
Systemic lupus erythematosus after mesotherapy with acetyl-L-carnitine
On the other hand, at the basic research level, it is important to comprehensively address the molecular pathways involved in the effect of l-carnitine supplementation and to extend the knowledge regarding the response of other organs and tissues, beyond the liver and muscle
There is compelling evidence from preclinical studies that l-carnitine and ALCAR can improve energy status, decrease oxidative stress and prevent subsequent cell death in models of adult, neonatal and pediatric brain injury
Pollard, L