Zonisamide (Zonegran) and Ketamine Therapy | Tovani Health
Zonegran (Zonisamide) — Anticonvulsant (sulfonamide, used for epilepsy / migraine / weight)
Verdict at Tovani Health
Compatible; cognitive slowing is the main thing to plan around.
Zonisamide and ketamine are compatible. Same family of considerations as topiramate: cognitive slowing, word-finding difficulty, and modest sedation can compound the post-session integration grogginess. Off-label uses include migraine prophylaxis and weight loss adjunct.
If you take Zonegran regularly and are considering at-home ketamine therapy, the combination is safe with monitoring or dose adjustment. This page covers the brief pharmacologic context and what we do at intake.
How Zonegran interacts with ketamine
Zonisamide is a sulfonamide anticonvulsant with multiple proposed mechanisms (sodium channel modulation, carbonic anhydrase inhibition, mild dopaminergic/serotonergic activity). Long half-life (~60 hours). No meaningful CYP3A4 interaction with ketamine.
What we do at intake
Disclose dose and indication. Block off integration time on session days.
Bottom line
Zonisamide and ketamine are compatible. Same family of considerations as topiramate: cognitive slowing, word-finding difficulty, and modest sedation can compound the post-session integration grogginess. Off-label uses include migraine prophylaxis and weight loss adjunct.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Zonegran (Zonisamide) 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 19, 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.