Am I eligible to join the military if I take vesicare?

You should probably talk to an official or recruiter that is in the military. They'll know better than anyone online. You probably will be fine though because while your problem is annoying, it isn't life-threatening. So if you went without your medication, nothing would happen except a bunch of bathroom breaks. On a related note, why do you want to join the military? Isn't it dangerous? Can't you find another way to serve your country or find another way of receiving income? Sorry, I don't have anything against the military or anything, but I keep hearing about all of these killed and wounded soldiers and wonder why anyone would go into battle of their free will. I would be scared shitless.