For men, the American Urological Association defines testosterone deficiency as a total testosterone level below 300 ng/dL on at least two morning blood draws, combined with symptoms such as low libido, fatigue, erectile dysfunction, or loss of muscle mass [6]
Several animal and human studies have found that L-carnitine supplementation has a beneficial effect on whole body glucose utilization
However, efficacy in clinical studies has been disappointing, possibly because excessive chronic stimulation is associated with receptor internalisation, and some agents have disturbed liver function [25, 26]
Keep in mind, however, that it can also trigger flares and you want to approach it cautiously, ideally with professional guidance