a.po
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        In medical literature is not avaliable a specific therapeutic use of B12 vitamin in  male infertility.  Some studies signs results for other vitamins, expecially E, or other molecules, but only for specific cases of infertility.  I hope you can use this suggest  Bye  A.Po