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Liniments are liquid suspensions or dispersions that are applied to the skin by rubbing They usually contain an anodyne (to relieve pain) or a rubifacient (to redden the skin).
Lotions are liquid preparations that are applied to the skin without rubbing. Lotions can be protective, emollient, cooling, cleansing, astringent or antipruritic depending on their content.
Ointments are semisolid fatty substances intended for topical application to the skin or mucous membranes. Ophthalmic ointments are sterile medicated ointments for use on the eyes.
Pastes are an ointment-like preparation of one or more drugs and some adhesive material. They are applied to inflamed surfaces and carry greater protection and more absorbent action than ointments.
Suppositories are drug mixtures with a solid base that can be molded into a suitable form for insertion into a body cavity or orifice.
A spray is a solution of one or more drugs in oil or water, administered by an atomizer.
Inhalants are drugs that can be carried into the nasal passages with inhaled air due to their high vapor pressure.
