The invention discloses a compound double-flower external preparation for treating
allergic dermatitis, and relates to the technical field of
medicine preparation, and the compound double-flower external preparation comprises the steps of
raw material pretreatment, stepped extraction,
filtration, purification, concentration, matrix and additive preparation and compound forming sterilization. The preparation method comprises the following steps: firstly extracting
andrographis paniculata and
isatis root with
ethanol to obtain fat-soluble effective components, then decocting residues with water,
honeysuckle and fructus forsythiae to obtain water-soluble components, thereby avoiding the problem of component loss caused by a single extraction mode, carrying out targeted purification in combination with a
macroporous resin column, effectively removing impurities and improving the purity of target components, and meanwhile, preparing the water-soluble components.
Carboxymethyl chitosan and
poloxamer 407 are prepared into a compound matrix, and the compound matrix is matched with a functional additive formed by a
penetration enhancer solution and a
liposome dispersion liquid, so that the transdermal efficiency of the
medicine is improved, the
skin irritation is reduced, and finally, the effects of better
curative effect and better safety of the preparation are achieved.