You may want to see:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12477513&dopt=Abstract
Fertil Steril. 2002 Dec;78(6):1203-8. Antioxidant treatment with carnitines is effective in infertile patients with prostatovesiculoepididymitis and elevated seminal leukocyte concentrations after treatment with nonsteroidal anti-inflammatory compounds.
Vicari E, La Vignera S, Calogero AE.