The application relates to a preparation method of a Gan Tong Pian and a related preparation and belongs to the field of
traditional Chinese medicine preparations. The preparation method comprises the following steps: 1) extracting volatile oil from
honeysuckle by adding 10 times the amount of water; collecting the water solution after
distillation; 2) taking
isatis root, soaking the
isatis root in a
solvent at
room temperature, filtering the
isatis root after soaking,
drying the isatis root after soaking, and crushing the isatis root into
fine powder for standby; 3) combining the remaining isatis root with
gardenia, licorice and indigowood, adding water to the combination to boil three times, filtering the combination, combining the filtrate with the above water solution, filtering the combination, adding
ethanol to the filtrate until the
ethanol content is 60%, filtering the combination, recovering
ethanol from the filtrate, and concentrating the filtrate into thick paste; 4) mixing the thick paste with the above
fine powder,
drying the mixture, crushing the mixture into
fine powder, mixing the fine
powder with paracetamol,
amantadine hydrochloride and appropriate accessories, uniformly mixing the mixture, preparing granules, spraying the volatile oil into the granules, uniformly mixing the granules, pressing the granules,
coating the granules with film, and obtaining the Gan Tong Pian.