l carnitine side effect fishy odor trimethylamine Did You Know? Some people report a “fishy” smell after supplementing with L-carnitine. This happens because certain gut bacteria convert to trimethylamine, a malodorous compound found in rotting fish. Can L-Carnitine Cause Side Effects?
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Balci A, et al

, BiotechUSA L-Carnitine + Chrome

The reason this form of carnitine is used as a nootropic is that ALCAR more readily crosses the blood-brain barrier than other forms of L-carnitine supplements due to the addition of an acetyl group (-COCH3)

doi: 10.1016/j.jelectrocard.2024.03.015 72 BarrientosGPavezMWilsonCHetzCQuestAFGLeytonLet al
