| abstract |
A film coating which is an oxygen barrier is applied to a pharmaceutical dosage form to protect the dosage form from atmospheric oxygen. The coating comprises a polymeric binder, an anti-tackifying agent, and an optional dissolution enhancing agent, where the polymeric binder is sodium carboxymethylcellulose, the anti-tackifying agent is talc, and the optional dissolution enhancing agent is sucrose, sodium bicarbonate, or a mixture thereof. |