Pimavanserin (Nuplazid) and Ketamine Therapy | Tovani Health
Nuplazid (Pimavanserin) — 5-HT2A inverse agonist (Parkinson's disease psychosis)
Verdict at Tovani Health
Compatible; the Parkinson's-disease context shapes the planning more than the drug itself.
Pimavanserin and ketamine are compatible. Pimavanserin is unique among antipsychotics — it has NO D2 antagonism, only 5-HT2A inverse agonism. That means the antidepressant-attenuation concern we apply to other antipsychotics does not apply here. The practical planning matters more because of the underlying Parkinson's disease: cognitive fluctuations, fall risk, and motor symptoms shape how we plan sessions.
If you take Nuplazid 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 Nuplazid interacts with ketamine
Pimavanserin is a selective inverse agonist at 5-HT2A receptors with no D2 activity. Approved specifically for Parkinson's disease psychosis. Modest QT prolongation but per the published literature ketamine itself is not a meaningful QT-prolonging drug at psychiatric doses.
What we do at intake
Disclose dose and Parkinson's medication regimen. We coordinate session planning with your neurologist for patients with significant motor or cognitive symptoms.
Bottom line
Pimavanserin and ketamine are compatible. Pimavanserin is unique among antipsychotics — it has NO D2 antagonism, only 5-HT2A inverse agonism. That means the antidepressant-attenuation concern we apply to other antipsychotics does not apply here. The practical planning matters more because of the underlying Parkinson's disease: cognitive fluctuations, fall risk, and motor symptoms shape how we plan sessions.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Nuplazid (Pimavanserin) 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.