Opening early 2027

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Treatments · Long Island, NY

Ketamine infusion therapy,
carefully considered.

At a glance

Ketamine infusion therapy delivers an anesthetic medication through an IV for selected pain or PTSD cases, uses that are off-label and require monitoring. Institute of Function starts with diagnosis and less invasive effective care, considering infusions only when assessment supports them alongside rehabilitation and appropriate monitoring. Dr. Benjamin (Ben) Klyachman, D.O., board-certified in pain medicine and physical medicine and rehabilitation, leads care at Institute of Function in Nassau County, NY, which welcomes patients from across Long Island, New York City and beyond.

Ketamine is an anesthetic medication. At low, carefully controlled doses given by IV infusion, it is used off-label for selected chronic pain conditions, complex regional pain syndrome (CRPS) and PTSD. Institute of Function opens in Nassau County in early 2027. This care will be considered within a broader medical plan, never as a stand-alone promise of relief.

Medically reviewed by Dr. Ben Klyachman, D.O. · Updated October 21, 2026

Where it may fit

Ketamine infusion therapy may be considered for chronic pain that has not responded to other approaches, CRPS, neuropathic pain and PTSD. An accurate diagnosis and a review of prior care come first. Rehabilitation and medication review remain part of the plan. For PTSD, care is coordinated with the patient's mental health clinician rather than replacing ongoing mental health treatment. Evidence varies by condition, and response differs from person to person.

Screening before an infusion

A physician reviews your medical history, blood pressure and heart history, current medications, any history of psychosis or substance use, and pregnancy. These factors help determine whether treatment is appropriate and what precautions would be needed. Not everyone is a candidate. The assessment includes a discussion of alternatives, the evidence for your condition, and the limits of what an infusion can reasonably address.

The infusion experience

Care is planned in a private, quiet infusion room, with continuous monitoring by the medical team during and after the infusion. You generally remain awake, although dissociative or dreamlike effects are common while ketamine is being given and fade afterward. The team observes your recovery before you leave. Patients do not drive that day and need someone to take them home; transport is arranged before treatment, not afterward.

Risks and realistic expectations

Possible effects include raised blood pressure and heart rate, nausea, dizziness and dissociation. Rare bladder effects have been reported with frequent long-term use. Risks, monitoring and reasons to stop or adjust treatment are discussed in detail beforehand. The number and timing of infusions are decided individually after assessment, with response and tolerability reviewed along the way. No outcome is promised, and treatment is reconsidered when it is not an appropriate fit.

Common
questions.

This page is general information, not medical advice. Individual results vary. Medical Disclaimer

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