Ketamine is legal in New York only when prescribed by a licensed medical professional with proper federal authorization. Outside that narrow lane, it is a tightly controlled substance, and possessing even a small amount without a valid prescription is a crime. The penalties climb quickly with weight and with any prior ketamine conviction, and a single felony charge can reach well beyond the courtroom into professional licensing and driving privileges.
How New York Classifies Ketamine
New York lists ketamine as a Schedule III controlled substance under Public Health Law 3306.1New York State Senate. New York Public Health Law 3306 – Schedules of Controlled Substances The state recognizes legitimate medical uses but treats the drug as carrying a moderate risk of abuse and dependence. Other Schedule III substances include anabolic steroids, testosterone, and low-dose codeine products such as Tylenol with codeine.2Drug Enforcement Administration. Drug Scheduling
The federal Controlled Substances Act schedules ketamine the same way.2Drug Enforcement Administration. Drug Scheduling That dual regulation matters: both state prosecutors and federal agencies can pursue cases, and anyone handling ketamine professionally has to satisfy both sets of rules.
When Ketamine Is Legal: Prescriptions and Clinics
Physicians, nurse practitioners, and other authorized prescribers in New York can lawfully prescribe ketamine if they hold a valid DEA registration and follow state prescribing rules. The drug’s original and still primary approved use is as an anesthetic in hospital and surgical settings. The FDA has never approved racemic ketamine, the standard form, for psychiatric conditions like depression or chronic pain, but off-label prescribing is lawful when the provider exercises legitimate medical judgment.
Ketamine Infusion Clinics
Clinics offering ketamine infusions for treatment-resistant depression have multiplied in recent years without a clear prospective regulatory framework. Federal and state authorities have instead drawn boundaries through audits, investigations, and enforcement actions. When regulators evaluate a clinic, they look at operational practices such as individualized treatment plans, physician supervision, and accurate advertising. The FDA has specifically warned about compounded ketamine products, particularly oral and at-home formulations, citing concerns about inconsistent dosing and safety.
Spravato (Esketamine)
The FDA has approved one ketamine-related product for psychiatric use: Spravato, a nasal spray of esketamine for treatment-resistant depression. Because of the risks of sedation, dissociation, and abuse, Spravato is available only through a restricted program called a REMS (Risk Evaluation and Mitigation Strategy). The drug may be administered only in a certified healthcare setting under direct observation, with at least two hours of post-administration monitoring.3U.S. Food and Drug Administration. Spravato Prescribing Information Patients cannot take Spravato home.
Telehealth Prescribing Through 2026
As of late 2025, the DEA extended its COVID-era telemedicine flexibilities through December 31, 2026. Under these rules, DEA-registered practitioners can prescribe Schedule II through V controlled substances, including ketamine, after an audio-video telemedicine visit, without ever having conducted an in-person evaluation.4Drug Enforcement Administration. DEA Extends Telemedicine Flexibilities to Ensure Continued Access to Care This is the fourth temporary extension. If it is not renewed again, the DEA’s standard rules under the Ryan Haight Act would generally require an in-person visit before a controlled substance prescription can be issued through telemedicine. Anyone receiving ketamine through a telehealth provider should watch what happens at the end of 2026.
I-STOP Monitoring
New York’s prescription monitoring program, I-STOP, requires prescribers to check a patient’s controlled substance history before writing a prescription for any Schedule II, III, or IV drug, ketamine included. Pharmacists must report dispensing data to the registry, and electronic prescriptions are required for controlled substances in most circumstances.
Penalties for Possession Without a Prescription
Unauthorized ketamine possession is penalized on a tiered system that escalates with weight and criminal history. The thresholds are lower than most people expect.
Any Amount, No Prior Ketamine Conviction
Possessing any amount of ketamine without authorization is at minimum criminal possession of a controlled substance in the seventh degree under Penal Law 220.03, a Class A misdemeanor.5New York State Senate. New York Penal Law 220.03 – Criminal Possession of a Controlled Substance in the Seventh Degree A conviction carries up to one year in jail.
Over 1,000 Milligrams, or Any Prior Ketamine Conviction
Possession jumps to criminal possession in the fifth degree, a Class D felony, in two situations: the ketamine weighs more than 1,000 milligrams, or the person has any prior conviction for possessing or attempting to possess ketamine, regardless of the amount.6New York State Senate. New York Penal Law 220.06 – Criminal Possession of a Controlled Substance in the Fifth Degree The second trigger catches people off guard. A person convicted once for holding a tiny amount faces a felony if caught with any quantity again.
For a first-time felony drug offender, a Class D felony carries a determinate prison sentence of one to two and a half years. If the court finds a prison sentence too harsh given the circumstances, it can impose a definite sentence of one year or less instead.7New York State Senate. New York Penal Law 70.70 – Sentence of Imprisonment for Felony Drug Offenders Fines for any felony conviction can reach $5,000.8New York State Senate. New York Penal Law 80.00 – Fines for Felonies and Misdemeanors
4,000 Milligrams or More
Possession of four grams or more is criminal possession in the fourth degree under Penal Law 220.09, a Class C felony.9New York State Senate. New York Penal Law 220.09 – Criminal Possession of a Controlled Substance in the Fourth Degree Four grams is a small physical quantity, roughly a teaspoon, but it crosses into territory where prosecutors treat the case as more than personal use.
Repeat Felony Offenders
A second Class D felony drug conviction carries one and a half to four years if the prior felony was nonviolent, and two and a half to four and a half years if the prior felony was violent.7New York State Senate. New York Penal Law 70.70 – Sentence of Imprisonment for Felony Drug Offenders
Possession With Intent to Sell, and Sale
Possessing any controlled substance with intent to sell is criminal possession in the fifth degree, a Class D felony, regardless of weight.6New York State Senate. New York Penal Law 220.06 – Criminal Possession of a Controlled Substance in the Fifth Degree Prosecutors establish intent through circumstantial evidence: packaging materials, scales, large amounts of cash, multiple baggies, or text messages discussing transactions.
Selling any amount of ketamine is criminal sale of a controlled substance in the fifth degree under Penal Law 220.31, also a Class D felony.10New York State Senate. New York Penal Law 220.31 – Criminal Sale of a Controlled Substance in the Fifth Degree There is no minimum quantity. A first-time felony drug offender convicted of a sale faces one to two and a half years in prison.7New York State Senate. New York Penal Law 70.70 – Sentence of Imprisonment for Felony Drug Offenders Selling near a school or to minors, or operating as part of an organized distribution network, can trigger enhanced charges.
Compounding or manufacturing ketamine products without proper pharmacy licensing exposes a person to both criminal drug charges and regulatory enforcement from the Department of Health.
Driving After Using Ketamine
Driving while impaired by ketamine falls under New York’s DWAI-drugs statute, Vehicle and Traffic Law 1192(4). A first DWAI-drugs offense is a misdemeanor carrying up to one year in jail, fines, and a license revocation of at least six months. The charge is entirely separate from any possession charge, so a driver stopped with ketamine in their system can face both prosecutions at once.
Consequences for Professional Licenses
A ketamine-related conviction often outlasts the criminal sentence itself for anyone holding a state-issued license.
Healthcare Professionals
Under New York Education Law 6530, a criminal conviction is explicitly listed as professional misconduct for physicians. The same statute treats practicing while impaired by drugs, or being a habitual user of controlled substances, as independent grounds for discipline, so even without a conviction, a pattern of unauthorized ketamine use can trigger proceedings.11New York State Education Department. New York Education Law Article 131-A – Definitions of Professional Misconduct The Office of Professional Medical Conduct investigates complaints against physicians and physician assistants, and the Board for Professional Medical Conduct adjudicates them.12New York State Department of Health. Understanding New York’s Medical Conduct Program – Physician Discipline Sanctions range from mandatory rehabilitation and probation to full license revocation. Nurses and pharmacists face parallel scrutiny from their respective boards.
Attorneys
Attorneys convicted of drug offenses face proceedings through the Attorney Grievance Committees. The Appellate Division has ultimate authority over attorney discipline and can impose sanctions ranging from public censure to disbarment.13New York State Unified Court System. Attorney Grievance Committees – Fourth Department A felony drug conviction almost always results in some form of public discipline, and even a misdemeanor can trigger a formal investigation.
Other Licensed Professionals
Real estate brokers, educators, and other professionals holding New York state licenses may also face disciplinary action after a controlled substance conviction. The specifics vary by licensing board, but a criminal record involving a controlled substance raises fitness questions that rarely resolve quickly or cheaply.