Black Cobra Tablets in Pakistan Normally Nerves Or Blood Vessels In Men With Male Erectile Dysfunction Do Not Work Properly. Which Prevents Them From Achieving An Erection. It Works To Restore. The Blood Flow To The Penis Making. It is Easier To Achieve And Sustain Longer Erections. It Increases The Blood Flow To The Penis By Helping. The Arteries In The Penis Relax And Expand.