Lidocaine (Xylocaine, Lidoderm) and Ketamine Therapy | Tovani Health
Xylocaine (Lidocaine) (also: Lidoderm patch, LMX) — Local anesthetic / Class Ib antiarrhythmic (topical, infiltrative, IV)
Verdict at Tovani Health
Fully compatible at typical local-anesthetic and topical-patch doses.
Lidocaine and ketamine have no clinically significant interaction at the doses patients typically encounter. Topical 5% patches for postherpetic neuralgia and OTC creams have minimal systemic absorption. Dental and procedural local infiltration is brief and self-limited. IV lidocaine (rare, for ventricular arrhythmia or some chronic pain protocols) is hospital-context. None of these create a meaningful KAP interaction.
If you take Xylocaine 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 Xylocaine interacts with ketamine
Lidocaine blocks voltage-gated sodium channels, producing nerve conduction blockade for local anesthesia and class Ib antiarrhythmic effect. Hepatic CYP3A4/CYP1A2 metabolism; minimal effect on ketamine at typical doses.
What we do at intake
Continue topical use as needed. Disclose any IV lidocaine protocols or recent dental procedures.
Bottom line
Lidocaine and ketamine have no clinically significant interaction at the doses patients typically encounter. Topical 5% patches for postherpetic neuralgia and OTC creams have minimal systemic absorption. Dental and procedural local infiltration is brief and self-limited. IV lidocaine (rare, for ventricular arrhythmia or some chronic pain protocols) is hospital-context. None of these create a meaningful KAP interaction.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Xylocaine (Lidocaine) 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.