may be prepared using any known biocompatible formulation the selection of ingredients in the carrier for oral compositions depends on secondary considerations like taste cost and shelf stability which are not critical for the purposes of this invention one skilled in the art would know how to select appropriate ingredients without undue experimentation the solid compositions may also be coated by conventional methods typically with ph or time dependent coatings such that component a is released in the gastrointestinal tract in the vicinity of the desired application or at various points and times to extend the desired action the coatings typically comprise one or more components selected from the group consisting of cellulose acetate phthalate polyvinyl acetate phthalate hydroxypropyl methyl cellulose phthalate ethyl cellulose eudragit u00ae coatings available from rohm amp haas g m b h of darmstadt germany waxes and shellac compositions for oral administration can also have liquid forms for example suitable liquid forms include aqueous solutions emulsions suspensions solutions reconstituted from non effervescent granules suspensions reconstituted from non effervescent granules effervescent preparations reconstituted from effervescent granules elixirs tinctures syrups and the like liquid orally administered compositions typically comprise component a and component b namely a carrier comprising ingredients selected from the group.