sodium alginate sodium carboxymethyl cellulose copolymer of vinylpyrrolidone and vinyl acetate preferably the polymers may be hydroxypropyl methylcellulose hydroxypropyl cellulose or polyvinylpyrrolidone the range of such substantially water soluble polymers depends on the type of compositions to be prepared the enteric coating may include polymers such as cellulose acetate phthalate hydroxypropyl methylcellulose phthalate polyvinyl acetate phthalate carboxymethylethylcellulose methacrylic acid copolymers such as compounds known under the trademarks of eudragit ne30d eudragit l eudragit s eudragit l 100 55 or mixtures thereof the enteric coating may also include plasticizers such as triacetin triethyl citrate tributyl sebecate diethyl phthalate polyethylene glycol and inert excipients such as talc titanium dioxide colloidal silicon dioxide hydroxypropyl methylcellulose crospovidone and mixtures thereof the compositions of the present invention show substantial absence of crystalline benzimidazole under storage at 40 u00b0 c and 75 humidity conditions for a period of at least 1 month preferably 3 months more preferably 6 months as determined by x ray diffraction method quantity mg capsule s no ingredients 1a 1b 1c a benzimidazole core 1 non pareil seeds 20 25 100 0 100 0 60 0 2 amorphous esomeprazole magnesium 44 5 44 5 u2014 3 amorphous omeprazole magnesium u2014 u2014 20 6 4 hydroxypropyl methylcellulose u2014 20 0 5 0 5 hydroxypropyl cellulose hpc l 20 0 u2014 5 0 6 crospovidone kollidon clm 30 0 30 0 u2014 7 purified water qs qs qs b separating layer 1 hydroxypropyl methylcellulose 14 98 u2014 6 97 hpmc 5 cps 2 hydroxypropyl cellulose u2014 14 98 u2014 3 polyethylene glycol 400 1 49 1 49 0 69 4 talc 2 98 2 98 1 4 5 purified water qs qs qs c enteric coat 1 methacrylic acid copolymer type c 39 76 39.