to 99 99 weight percent by u201c pharmaceutically acceptable carrier u201d is meant any carrier diluent or excipient which is compatible with the other ingredients of the formulation and to deleterious to the recipient the active agent is preferably administered with a pharmaceutically acceptable carrier selected on the basis of the selected route of administration and standard pharmaceutical practice the active agent may be formulated into dosage forms according to standard practices in the field of pharmaceutical preparations see alphonso gennaro ed remington 39 s phamaceutical sciences 18th ed 1990 mack publishing co easton pa suitable dosage forms may comprise for example tablets capsules solutions parenteral solutions troches suppositories or suspensions for parenteral administration the active agent may be mixed with a suitable carrier or diluent such as water an oil particularly a vegetable oil ethanol saline solution aqueous dextrose glucose and related sugar solutions glycerol or a glycol such as propylene glycol or polyethylene glycol solutions for parenteral administration preferably contain a water soluble salt of the active agent stabilizing agents antioxidizing agents and preservatives may also be added suitable antioxidizing agents include sulfite ascorbic acid citric acid and its salts and sodium edta suitable preservatives include benzalkonium chloride methyl or propyl paraben and chlorbutanol the composition for parenteral administration may take the form of an aqueous or nonaqueous solution dispersion suspension or emulsion for oral administration the active agent may be combined with one or more solid inactive ingredients for the preparation of tablets capsules pills powders granules or other suitable oral dosage forms for example the active agent may be combined with at least one excipient such as fillers binders humectants disintegrating agents solution retarders absorption accelerators wetting agents absorbents or lubricating agents.