 [ Symptoms ] why do i now have a lack of sensitivity in my penis it is not numb but takes a longer time to achieve orgasm  i do not have difficulty getting an erection i have plenty of energy throughout the day and t tests ok i have not taken medications for 4 6 months celebrex percocet tramadol effexor i currently take 2000iu of vitamin d daily vaginal intercourse works fine but oral sensation lack of is what seems unexplainable to me  over the last 2 5 years i have had a few cortizone injections in my shoulder and knee but no major injury to my back [ Disease ] hi first google all your drugs for erectile dysfunction as a side effect for the time being you could try a cock ring i have a hardwear ice from myhardwear com find this gives me some great boners if not try some pe exercises get your blood flowing through your penis try pegym com could be a good place to start them do hope this helps good luck