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LC intake might cause mild gastrointestinal symptoms, including nausea, vomiting, abdominal cramps, heartburn, indigestion, and diarrhea

Supplements that can lower heart rate are particularly important for enhancing athletic performance

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There is a growing trend of incorporating L-carnitine into functional foods like nutritional bars and fortified snacks to enhance their health benefits

The amine and carboxylic acid groups of carnitine are the key groups for OCTN2 to recognize it, and the hydroxyl group of carnitine is esterified by acyl derivatives and does not hinder the recognition effect of OCTN2, indicating that OCTN2 has high substrate diversity and adaptability and is able to process a variety of acylcarnitines [162]