mm tris hcl ph 7 4 at 4 u00b0 c filtermats can be air dried overnight then place in bags with 20 ml betaplate scintillation cocktail and counted on a betaplate counter for 60 sec per sample data can be analyzed using excel the compositions of the present invention may be formulated in a conventional manner using one or more pharmaceutically acceptable carriers thus the active compounds of the invention may be formulated for oral buccal transdermal e g patch intranasal parenteral e g intravenous intramuscular or subcutaneous or rectal administration or in a form suitable for administration by inhalation or insufflation for oral administration the pharmaceutical compositions may take the form of for example tablets or capsules prepared by conventional means with pharmaceutically acceptable excipients such as binding agents e g pregelatinized maize starch polyvinylpyrrolidone or hydroxypropyl methylcellulose fillers e g lactose microcrystalline cellulose or calcium phosphate lubricants e g magnesium stearate talc or silica disintegrants e g potato starch or sodium starch glycolate or wetting agents e g sodium lauryl sulphate the tablets may be coated by methods well known in the art liquid preparations for oral administration may take the form of for example solutions syrups or suspensions or they may be presented as a dry product for constitution with water or other suitable vehicle before use such liquid preparations may be prepared by conventional means with pharmaceutically acceptable additives such as suspending agents e g sorbitol syrup methyl cellulose or hydrogenated edible fats emulsifying agents e g lecithin or acacia non aqueous vehicles e g almond oil oily esters or ethyl alcohol and preservatives e g methyl or.