Ointments contain medicinal and auxiliary substances that should be evenly distributed in the dosage form. Excipients form a simple or complex base. Thus, the ointment base is the carrier of the medicinal substance. Depending on the composition, it can have an effect on the release, bioavailability and therapeutic effect of the medicinal substance. The bases provide the necessary mass of ointment, proper concentration of medicinal substances, soft consistency and have a significant impact on the stability of ointments. The degree of release of medicinal substances from ointments, the speed and completeness of their resorption largely depend on the nature and properties of the base. For example, an ointment of 2% boric acid on a consistent emulsion basis exhibits the same therapeutic activity as a similar...