is l-carnitine good for ed How to Choose the Best Supplement: A Smart Shopper's Guide Does L-Carnitine Help with Erectile
Description
Getting the correct dosage is critical because too little may not provide the benefits you desire, and too much can lead to discomfort or side effects

An early cross-sectional study of 101 fertile and infertile men found that L-carnitine concentrations in semen were positively correlated with the number of sperm, the percentage of motile sperm, and the percentage of normal appearing sperm in the sample (110), suggesting that L-carnitine may play an important role in male fertility
PubMed, NCBI
Didangelos T, Karlafti E, Kotzakioulafi E, et al

But opt for Acetyl-L-Carnitine (ALC) if you value mental sharpness, overall cognitive health, and physical benefits