Pembrolizumab (Keytruda) and Ketamine Therapy | Tovani Health
Keytruda (Pembrolizumab) — PD-1 checkpoint inhibitor (cancer immunotherapy)
Verdict at Tovani Health
Fully compatible; the immune-related side effects are intrinsic to checkpoint inhibition.
Pembrolizumab and ketamine have no clinically significant interaction. Most-prescribed checkpoint inhibitor; used across many cancer types. The immune-related adverse events (colitis, hepatitis, pneumonitis, endocrinopathies) are intrinsic to checkpoint inhibition and require their own monitoring — unchanged by KAP.
If you take Keytruda 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 Keytruda interacts with ketamine
Pembrolizumab is a humanized mAb that blocks PD-1, releasing T-cell immune brakes against tumor cells. IV infusion every 3 or 6 weeks. No CYP interactions with ketamine.
What we do at intake
Continue as scheduled. Tell us about any immune-related side effects you've experienced; some symptoms (fatigue, mood changes from endocrine effects) could overlap with KAP outcome assessment.
Bottom line
Pembrolizumab and ketamine have no clinically significant interaction. Most-prescribed checkpoint inhibitor; used across many cancer types. The immune-related adverse events (colitis, hepatitis, pneumonitis, endocrinopathies) are intrinsic to checkpoint inhibition and require their own monitoring — unchanged by KAP.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Keytruda (Pembrolizumab) 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 22, 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.