gelatin sorbitol tragacanth or polyvinylpyrrolidone fillers for example microcrystalline cellulose lactose sugar maize starch calcium phosphate sorbitol or glycine tabletting lubricants for example magnesium stearate disintegrants for example starch polyvinvlpyrrolidone sodium starch glycollate or microcrystalline cellulose or pharmaceutically acceptable wetting agents such as sodium lauryl sulphate solid oral compositions may be prepared by conventional methods of blending filling tabletting or the like repeated blending operations may be used to distribute the active agent throughout those compositions employing large quantities of fillers such operations are of course conventional in the art the tablets may be coated according to methods well known in normal pharmaceutical practice in particular with an enteric coating oral liquid preparations may be in the form of for example emulsions syrups or elixirs or may be presented as a dry product for reconstitution with water or other suitable vehicle before use such liquid preparations may contain conventional additives such as suspending agents for example sorbitol syrup methyl cellulose gelatin hydroxyethylcellulose carboxymethylcellulose aluminium stearate gel hydrogenated edible fats emulsifying agents for example lecithin sorbitan monooleate or acacia non aqueous vehicles which may include edible oils for example almond oil fractionated coconut oil oily esters such as esters of glycerine propylene glycol or ethyl.