Suggested magistral formula for mouth ulcers

Mouth Ulcer Gel

zhi zi (Gardeniae Fructus) gardenia fruit
huang lian (Coptidis Rhizoma) coptis rhizome
huang bo (Phellodendri Chinensis) phellodendron bark
da huang (Rhei Radix et Rhizoma) rhubarb root
Rose honey