l carnitine transports long chain fatty acids into mitochondria L-Carnitine in Role of Carnitine Shuttle System
Description
Vijay-Kumar M, Aitken JD, Carvalho FA, et al

Difficulty putting on shoes or very noticeable sock marks
75% Protein

Given these functions, carnitine is concentrated in tissues that utilize fatty acids as fuel, like skeletal and cardiac muscles
