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Yes, L-carnitine can aid fat metabolism and energy production, but for effective weight loss, it is recommended to combine it with exercise and a healthy diet

Lheureux PE, Hantson P: Carnitine in the treatment of valproic acid-induced toxicity

In one example of a physiological response to osmotic pressure, in early mammary gland milk production osmoregulatory pathways are exploited using asymmetric kinetics to increase the carnitine concentration in milk for suckling neonates who have reduced carnitine stores, even though this results in decreased maternal liver stores [20]

Injecting it intramuscularly or subcutaneously allows for significantly greater absorption and availability in the bloodstream