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Abstract
The silicone elastomer latex containing colloidal silica and poloyoxyethylene glycol 8,000 was shown to produce controlled released film coating on potassium chloride tablets with different shapes. The tablet shape did not affect the zero-order release characteristic of the active ingredinent from the coated tablests. With the same coating weight, the capsule shaped tablets exhibited a faster drug release rate as compared to the oval and round deep-cup shaped tablets.