A Review of Drug-Drug Interactions for Biologic Drugs Used in the Treatment of Psoriasis.

Generally, caution should be exercised when multiple immunosuppressive therapies are prescribed due to increased risk of infection. However, this is more the result of a synergistic effect as opposed to a true drug interaction. There have been cases where multiple biologic therapies have been concomitantly used without adverse events, as their mechanisms involved different pathways. The sources used to compile this guide were often comprised of low levels of evidence, reinforcing the idea that further studies are required to better direct prescribers.