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CONTROLLED-RELEASE MEDICAMENT; COLUMN COMPOSED OF INNER LAYER PREPARED FROM NONDISINTEGRATABLE BIOCOMPATIBLE MATERIAL CONTAINING A WATER-SOLUBLE DRUG AND AN OUTER LAYER OF WATER-IMPERMEABLE BIOCOMPATIBLE MATERIAL
CONTROLLED-RELEASE MEDICAMENT; COLUMN COMPOSED OF INNER LAYER PREPARED FROM NONDISINTEGRATABLE BIOCOMPATIBLE MATERIAL CONTAINING A WATER-SOLUBLE DRUG AND AN OUTER LAYER OF WATER-IMPERMEABLE BIOCOMPATIBLE MATERIAL
