Oral route of drug administration is the most appealing, convenient, significant and popular route for the delivery of drugs owing to ease of swallowing, self medication and most economic.They provide the advantages of combination therapy while reducing the number of prescriptions and the attendant administrative costs and improving patient compliance.Each layer may contain a different medicinal agent with varying release profiles 
Among these Bilayer tablet is new era for developing a combination of two or more active pharmaceutical ingredient in single dosage form, Promoting patient convenience and compliance.Each comes from a separate feed frame with individual weight control to form two or three-layered tablets, depending on the number of separate fills.Dual release tablet is a unit compressed tablet dosage form intended for oral application.