Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Potential switching scenarios. The dot (•) end of the arrow indicates the initial biologic. Switch: •A→A1; reverse-switch: •A1→A; multiple switches: •A→A2→A, •B2→B→B1; cross-switch: •A1→A2, •A2→A1; switch within the same drug class: •A→B; •B→A; intraclass cross-switch: •A1→B1, •B1→A1; intraclass switch: •A→B1; intraclass reverse-switch: •B2→A
