Certolizumab (Cimzia) and Ketamine Therapy | Tovani Health
Cimzia (Certolizumab pegol) — PEGylated TNF-α antibody fragment (RA, PsA, AS, plaque psoriasis, Crohn's)
Verdict at Tovani Health
Fully compatible; the PEGylation matters for placental transfer, not for KAP.
Certolizumab and ketamine have no clinically significant interaction. Unique among TNF biologics for being a PEGylated Fab fragment (no Fc region) — clinically relevant because it has minimal placental transfer, making it the preferred TNF biologic in pregnancy. From a KAP-interaction standpoint, identical to the other TNF biologics — clean profile.
If you take Cimzia regularly and are considering at-home ketamine therapy, the combination is generally safe at therapeutic doses. This page covers the brief pharmacologic context and what we do at intake.
How Cimzia interacts with ketamine
PEGylated Fab fragment against TNF-α. The PEGylation extends half-life and the lack of Fc region prevents placental Fc-receptor-mediated transfer. No CYP interaction with ketamine.
What we do at intake
Continue as scheduled.
Bottom line
Certolizumab and ketamine have no clinically significant interaction. Unique among TNF biologics for being a PEGylated Fab fragment (no Fc region) — clinically relevant because it has minimal placental transfer, making it the preferred TNF biologic in pregnancy. From a KAP-interaction standpoint, identical to the other TNF biologics — clean profile.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Cimzia (Certolizumab pegol) at intake. The eligibility check takes 5 minutes and gives you an honest answer about whether at-home ketamine fits your specific situation.
FL and NJ residents only. Benjamin Soffer, DO — Tovani Health.
Clinically reviewed
Reviewed by Benjamin Soffer, DO on May 23, 2026. Dr. Soffer is a board-certified physician (American Board of Internal Medicine) licensed in Florida and New Jersey, prescribing at-home ketamine therapy through Tovani Health.
This page is general information about how this medication interacts with at-home ketamine therapy at Tovani Health. It is not a substitute for medical advice from your prescribing physician about your specific situation. Always discuss medication changes with the doctor who prescribed them.