A sustained-release oral dosage form comprising: a matrix, wherein the matrix comprises a first viscosity modifier in an amount from 1 to 10 percent by weight of the dosage form, and coated granules comprising: a granule comprising hydrocodone or a salt form thereof in an amount from 0.1 to 90 percent by weight of the granule, a first strong film former in an amount from 1 to 90 percent by weight of the granule, a second viscosity modifier in an amount from 1 to 90 percent by weight of the granule, wherein the granule does not contain a fat/wax, a coating on the granule, wherein the coating is present in an amount from 20 to 80 percent by weight of the coated granule, wherein the coating comprises a second strong film former in an amount from 10 to 50 percent by weight of the coated granule, and a fat/wax in an amount from 10 to 25 percent by weight of the coated granule, wherein first and second strong film formers are independently selected from the group consisting of: ethylcellulose; Ammonio Methacrylate Copolymer, Type B; Ammonio Methacrylate Copolymer, Type A; Amino Methacrylate Copolymer; Ethyl Acrylate and Methyl Methacrylate Copolymer Dispersion; Methacrylic Acid Copolymer, Type A; Methacrylic Acid Copolymer, Type B; and shellac, and wherein the first and second viscosity modifiers are independently selected from the group consisting of: sodium alginate, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, polyvinylpyrrolidone, crosslinked polyacrylic acid, gelatin, pectins, gums, polyethylene oxides, Konjac flour, carrageenan, xanthan gum, or mixtures thereof a matrix, wherein the matrix comprises a first viscosity modifier in an amount from 1 to 10 percent by weight of the dosage form, and coated granules comprising: a granule comprising hydrocodone or a salt form thereof in an amount from 0.1 to 90 percent by weight of the granule, a first strong film former in an amount from 1 to 90 percent by weight of the granule, a second viscosity modifier in an amount from 1 to 90 percent by weight of the granule, wherein the granule does not contain a fat/wax, a coating on the granule, wherein the coating is present in an amount from 20 to 80 percent by weight of the coated granule, wherein the coating comprises a second strong film former in an amount from 10 to 50 percent by weight of the coated granule, and a fat/wax in an amount from 10 to 25 percent by weight of the coated granule, wherein first and second strong film formers are independently selected from the group consisting of: ethylcellulose; Ammonio Methacrylate Copolymer, Type B; Ammonio Methacrylate Copolymer, Type A; Amino Methacrylate Copolymer; Ethyl Acrylate and Methyl Methacrylate Copolymer Dispersion; Methacrylic Acid Copolymer, Type A; Methacrylic Acid Copolymer, Type B; and shellac, and wherein the first and second viscosity modifiers are independently selected from the group consisting of: sodium alginate, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, polyvinylpyrrolidone, crosslinked polyacrylic acid, gelatin, pectins, gums, polyethylene oxides, Konjac flour, carrageenan, xanthan gum, or mixtures thereof a granule comprising hydrocodone or a salt form thereof in an amount from 0.1 to 90 percent by weight of the granule, a first strong film former in an amount from 1 to 90 percent by weight of the granule, a second viscosity modifier in an amount from 1 to 90 percent by weight of the granule, wherein the granule does not contain a fat/wax, a coating on the granule, wherein the coating is present in an amount from 20 to 80 percent by weight of the coated granule, wherein the coating comprises a second strong film former in an amount from 10 to 50 percent by weight of the coated granule, and a fat/wax in an amount from 10 to 25 percent by weight of the coated granule, wherein first and second strong film formers are independently selected from the group consisting of: ethylcellulose; Ammonio Methacrylate Copolymer, Type B; Ammonio Methacrylate Copolymer, Type A; Amino Methacrylate Copolymer; Ethyl Acrylate and Methyl Methacrylate Copolymer Dispersion; Methacrylic Acid Copolymer, Type A; Methacrylic Acid Copolymer, Type B; and shellac, and wherein the first and second viscosity modifiers are independently selected from the group consisting of: sodium alginate, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, polyvinylpyrrolidone, crosslinked polyacrylic acid, gelatin, pectins, gums, polyethylene oxides, Konjac flour, carrageenan, xanthan gum, or mixtures thereof