Changes in mucous membranes.. Inflammation of two joints and inflammation of the mouth ulcer due to the toothpaste of fluoridated teeth. Bismuth causes a blue line along the gums

Changes in mucous membranes:
Antibiotics and B vitamins can occur black capillary tongue.
Bismuth causes a blue line along the gums.
Fluoridated toothpaste may cause inflammation of two arteries and inflammation of the ulcerative mouth.