Funtime on 24 November 2011
Have you been taking Tums or any other kind of heartburn medicine? I ask because said medicines can sometimes cause your body to stop producing one of the 2 chemicals that make up saliva which in turn makes your saliva black. I often wake up with a black tongue and black teeth in the morning if i take tums at night. Its totally harmless and washes off easily. Thats my only guess as to what it might be.
