be in microencapsulated form with one or more excipients as noted above dosage forms for topical or transdermal administration of a compound of this invention include ointments pastes creams lotions gels powders solutions sprays inhalants or patches the active component is admixed under sterile conditions with a pharmaceutically acceptable carrier and any needed preservatives or buffers as can be required ophthalmic formulation ear drops eye ointments powders and solutions are also contemplated as being within the scope of this invention the ointments pastes creams and gels can contain in addition to an active compound of this invention excipients such as animal and vegetable fats oils waxes paraffins starch tragacanth cellulose derivatives polyethylene glycols silicones bentonites silicic acid talc and zinc oxide or mixtures thereof powders and sprays can contain in addition to the compounds of this invention excipients such as lactose silicic acid aluminum hydroxide calcium silicates and polyamide powder or mixtures of these substances sprays can additionally contain customary propellants such as chlorofluorohydrocarbons transdermal patches have the added advantage of providing controlled delivery of a compound to the body such dosage forms can be made by dissolving or dispensing the compound in the proper medium absorption enhancers can also be used to.