Studies on improving semen quality and increasing pregnancy chances through the in vitro addition of L carnitine and coenzyme Q10 to semen in patients with asthenozoospermia Basic and Clinical Andrology Springer Acetyl L Carnitine Erectile Dysfunction: What the Evidence Shows for Men Exploring Support Options Remember to PLEASE talk with a provider to confirm supplements you should be taking. You do not need to be taking all of these. l carnitine and l acetylcarnitine supplementation for idiopathic male infertility in: Reproduction and Fertility Volume 1 Issue 1 (2020)