Ars. Alb: With great dryness and burning heat in mouth and tongue
Hydrocotyle: After the abuse of chlorate of potash.
Lachesis: With dark purplish appearance of the adjacent mucus membrane.
Merc. Sol: When there is salivation and soreness.
Nit. Acid: In sharp sticking pains. It is especially indicated after over indulgence in sweets.
