This formula is used as you would use toothpaste. It helps tighten gums so that teeth will not be loose. It helps with sore, swollen or inflamed gums, with sore mouth, pyorrhea, calculus, gingivitis and many other tooth, gum and mouth disorders. Wet toothbrush, dip into tooth powder and brush teeth and gums. The FDA has issued an advisory against internal consumption of comfrey.
Comfrey contains the active constituent pyrrolizidine alkaloids, which can be toxic to the liver.
Side effects include possible obstruction of blood flow to liver, possibly leading to death. The FDA has listed lobelia on its database of potentially poisionous plants. Overdoses, even slight, may lead to toxic effects including convulsion or possible death. Calm For Child. Focus For Child.