Borax 200 CH (30ml)SBL Borax Common name: Borate of Sodium Causes and symptoms of Borax Borax has marked action in treating aphthae ( mouth sores and ulcers). Aphthae in the mouth, on tongue and inside of the cheeks. The mucus membrane of the mouth is much reddened, easily bleeding during eating or when touched prevents child from nursing, with hot mouth. The tongue is cracked and bleeding with much salivation. Aphthous sore mouth worse from touch and taking salty or