This disclosure relates to an extended release oral dosage form comprising a matrix containing a viscosity modifier and coated granules containing a high water-soluble, high dose drug. The dosage form has alcohol resistance and may also have crush resistance. Specifically disclosed viscosity modifiers include gelling polymers such as: sodium alginate, hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, methylcellulose, crosslinked polyacrylic acid (e.g., carbomers), gelatin, pectins, gums (e.g., gum arabic, gum tragacanth, xanthan gums, and guar gums), polyethylene oxides, Konjac flour, carrageenan, or mixtures thereof
