L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians L Carnitine has become one of the most commonly asked about supplements over the past 18 months and I can see why when looking at all the research that has come out about it over the last 2ish years., Role of L carnitine in female infertility Reproductive Biology and Endocrinology Springer Nature Link Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications