The substantiation of the composition of an extemporaneous cream with antipsoriatic and anti-inflammatory effects

Aim. To substantiate an extemporaneous emulsion cream based on purified naphthalan oil for the pharmacotherapy of psoriasis. Materials and methods. Such methods as system analysis and generalization, as well as organoleptic, physicochemical, structural-mechanical, biopharmaceutical and statistical methods were used in the work. Results. The composition of an extemporaneous agent in the form of a cream for external use with the antipsoriatic and anti-inflammatory action were substantiated. It contains a purified naphthalan oil, the chamomile oil extract and a 10 % oil solution of vitamin A as active components of the substance of natural origin. Six model samples of the emulsion cream were processed; Tween-80, emulsifier No. 1 and Olivem 1000 were introduced in them as emulsifiers. Glycerol and propylene glycol in the concentration of 10 % were used as structure-forming substances of the hydrophilic phase. Colloidal and thermal stability, pH, structural viscosity and kinetics of the active component release were determined by the agar diffusion method in order to substantiate the excipients in the composition of the emulsion cream. Conclusions. As a result of the organoleptic, physicochemical, structural-mechanical and biopharmaceutical studies conducted, the composition of an extemporaneous emulsion cream with antipsoriatic and anti-inflammatory effects based on white purified naphthalan oil has been experimentally substantiated.