The Right Way to Take L Carnitine to Boost Your Training What even is carnitine?? Carnitine is a "conditionally" essential amino acid that becomes essential during pregnancy. What does this mean? You must get carnitine through food! The best sources are red AAB Protective effect of dietary L carnitine supplementation on follicular development in the ovary of ewes with subclinical pregnancy toxemia These are my educated supplement choices during pregnancy. I'm not taking a traditional prenatal because this supplement stack more than covers my needs for folate, B vitamins, iron, and other key nutrients