WELL, I WOULDNT.MY EXPERIENCE WITH V WAS A RATHER PAINFUL ERECTION THAT REALLY DID NOT WISH TO GO DOWN. MY EXPERIENCE WITH CIALIS WAS MUCH BETTER. IT WAS MORE NATURAL. LASTED MUCH LONGER. ABOUT TWO OR THREE DAYS. NO SIDE EFFECTS LIKE I HAD WITH V (HEADACHE ECT). I WOULD RECOMMEND CIALIS. FELT 18 AGAIN...LOL