l carnitine in male infertility pubmed L-CARNITINE SUPPLEMENTATION BEFORE ASSISTED REPRODUCTION FOR L-Carnitine and Acetyl-L-Carnitine: A Novel...
Description
People with sensitive stomachs should take acetyl-L-carnitine with, or after, meals
While certain studies did demonstrate improved sperm parameters with supplementing CoQ10, it did not significantly increase live birth or pregnancy rates in infertile men [159]

Multi-center evaluation of oxidation-reduction potential by the MiOXSYS in males with abnormal semen

Sengupta P, Dutta S, Slama P, Roychoudhury S

But only LC was shown to have treatment effects with statistical significance
