intravenous may be employed the active compounds of the present invention are orally administered for example with an inert diluent or with an assimilable edible carrier or they may be enclosed in hard or soft gelatin capsules or they may be compressed into tablets or they may be incorporated directly with the food of the diet for oral therapeutic administration the active compounds of this invention may be incorporated with excipients and used in the form of tablets troches capsules elixirs suppositories suspensions syrups wafers chewing gum and the like the amount of active compound in such therapeutically useful compositions or preparations is such that a suitable dosage will be obtained the tablets troches pill capsules and the like may also contain the following a binder such as gum tragacanth acacia corn starch or gelatin an excipient such as dicalcium phosphate a disintegrating agent such as corn starch potato starch alginic acid and the like a lubricant such as magnesium stearate and a sweetening agent such as sucrose lactose or saccharin may be added or a flavoring agent such as peppermint oil of wintergreen or cherry flavoring when the dosage unit form is a capsule it may contain in addition to materials of the above type a liquid carrier such as a fatty oil various other materials may be present as coatings or to otherwise modify the physical form of the dosage unit for instance tablets pills or capsules may be coated with shellac sugar or both a syrup or elixir may contain the active compounds sucrose as a sweetening agent methyl and propyl parabens as preservatives a dye and a flavoring such as cherry or orange flavor of course any material used in preparing any dosage unit form should be pharmaceutically pure and substantially non toxic in.