What Is Drug Substitution?

Therapeutic substitution, known also as drug switching and therapeutic interchange, is the practice of replacing a patient's prescription drugs with chemically different drugs that are expected to have the same clinical effect. Many times patients switch to a different drug with no problems.

What is generic drug substitution?

Generic substitution is a pharmacist-initiated act by which a different brand or an unbranded drug product is dispensed instead of a drug brand that was prescribed by the physician. This means substituting the same chemical entity in the same dosage form for one marketed by a different company.

What does substitution allowed mean on a prescription?

8=Substitution Allowed-Generic Drug Not Available in Marketplace-This value is used when the prescriber has indicated, in a manner specified by prevailing law, that generic substitution is permitted and the brand product is dispensed since the generic is not currently manufactured, distributed, or is temporarily ...