Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Fertility supplements: Do they work? PCOS is complex but the right supplements can truly make a difference. When it comes to managing PCOS naturally, three supplements stand out for their science backed benefits: 1) Berberine often compared Role of L carnitine in female infertility Reproductive Biology and Endocrinology Springer Nature Link Nanoparticle mediated L carnitine delivery for improved male fertility ScienceDirect How Much L Carnitine for Male Fertility? The 101 Guide