l-carnitine autoimmune disease Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health The carnitine system and cancer
Description
Illsley 3 Regulation of Human Trophoblast GLUT1 Glucose Transporter by Insulin-Like Growth Factor I (IGF-I) Accessed on 12 September 2018 Biruhalem Assefa, 1 , 2 Ayman M

Immune enhancer High levels of selenium in Brazil nuts support immune function by helping regulate the production of immune cells and antioxidant enzymes
That said, if someone is already training, already eating adequate protein, and wants to optimize every possible variable, adding L-carnitine is not unreasonable

Still, dosage should be guided by lab results to support safe and effective treatment
