Tag: Orange Book

The Orange Book: Understanding Therapeutic Equivalence and Generic Drug Substitution

The Orange Book: Understanding Therapeutic Equivalence and Generic Drug Substitution

Jan 26 2026 / Healthcare Resources

The FDA's Orange Book is the official guide to therapeutic equivalence between brand-name and generic drugs. Learn how TE codes determine substitution, why it matters for patients and pharmacies, and how the system saves billions annually.

VIEW MORE