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L carnitine supplements can cause a fishy odor in the breath, sweat, and urine. This is likely due to the formation of trimethylamine (TMA). TMA is also responsible for the pungent smell of Need a faster way to support energy, metabolism, and mental clarity? Our intramuscular (IM) injections deliver targeted nutrients directly into the muscle for efficient absorption and cellular support. Four targeted options are Stabilizing the enzyme in fish odor syndrome L Carnitine Side Effects: What's Real (2026) Trimethylaminuria (Fish Odor Syndrome or TMAU) Breakthrough in studying the enzyme that ultimately produces fish odor syndrome EurekAlert!
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