I could find only one study on this topic:<br> <br> <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&li st_uids=15072869" target="_blank">http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&li st_uids=15072869</a><br> <br> "Carnitine versus androgen administration in the treatment of sexual dysfunction, depressed mood, and fatigue associated with male aging."<br> <br> Evidently there is SOME truth to this but you need to read more about possible side effects of propionyl-L-carnitine and acetyl-L-carnitine. They may have effects that no one has studied yet. Talk with your doctor and see if he'll work with you on a trial of this alternative. If the side effects don't worry him, you and he may discover something interesting.<br>