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Reduces Muscle Fatigue: By delaying the accumulation of lactic acid in muscles, L-Carnitine helps to reduce muscle fatigue, allowing for longer and more effective training or performance sessions

Adverse effects and challenges Short-term adverse effects, such as fatigue, irritability, headache, nausea, dehydration, hypoglycemia, diarrhea, metabolic acidosis, and refusal to eat, are commonly seen during the first few weeks of the KD as responses to diet-induced metabolic shift and are usually predictable and preventable

Plasma concentrations of Trimethylamine-N-oxide are directly associated with dairy food consumption and low-grade inflammation in a german adult population

PMID 16195315