I take vitamin-V every now and then, but lately I've had increasing sideeffects I didn't notice when I first tried it. I get an extremely stuffed up nose, so bad, I have to breathe with my mouth. Has anyone else experienced this? Also, does Cialis or Levitra have this side effect? I might cough up the extra dough for this stuff if it doesn't make me sound like I have a sinus infection for 3 hours.