Herbiotics L Carnitine (400 Mg) 30 Capsules Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn L Carnitine intake and high trimethylamine N oxide plasma levels correlate with low aortic lesions in ApoE transgenic mice expressing CETP ScienceDirect Early research into L carnitine was often cited as underwhelming, showing negligible changes in muscle carnitine content and fat loss outcomes. However, these findings may have been limited by a short study window