Without a doubt red bull is the cause of some rectal bleeding i am having i just want to know should i stop drinking it and should i see a doc?

See a physician: The main ingredient in Red Bull is caffeine.One can has 80 mg of caffeine, although in some countries it may contain more. Caffeine won't cause rectal bleeding, per say, although it may cause frequent bowel movements at high dose in some individuals, which could cause any internal hemorrhoids to bleed.***You should stop drinking it and see a physician to be sure nothing serious is causing bleeding