Ketamine Therapy · Candidacy & Evaluation · Reviewed by Samuel Caruthers, MD
Most articles on this subject are written to persuade you that you are. This one is written to help you work out whether you actually are, including the reasons you might not be, because finding that out before you have spent money and hope is better for everyone.
Candidacy comes down to four questions. Does your pain belong to a category where ketamine has a plausible role? Have appropriate treatments been tried first? Is there any medical reason it would be unsafe for you? And can you practically complete a course of treatment? A yes to all four means it is worth a conversation. A no to any of them is worth knowing now.
One: does your condition fit
Ketamine is used off-label in chronic pain that involves central sensitization, meaning pain that is amplified by the nervous system rather than driven purely by ongoing tissue damage. It is not a general painkiller and it is a poor fit for pain with a straightforward mechanical cause that has not been addressed.
Conditions where it is most often considered include fibromyalgia, complex regional pain syndrome, neuropathic pain including diabetic peripheral neuropathy and postherpetic neuralgia, persistent pain after spine surgery, phantom limb pain, and some cases of widespread centralized pain.
If your pain is coming from an untreated structural problem, from active inflammation in a joint, or from a condition that has not yet been properly diagnosed, the right next step is diagnosis and directed treatment, not an infusion.
A question the evaluation will ask
Does your pain have qualities that suggest nerve involvement or amplification? Burning, electrical, or shooting sensations. Pain from light touch. Pain spreading beyond the original area. Pain disproportionate to any visible finding. These features make a centralized or neuropathic component more likely, and they make ketamine a more sensible thing to discuss.
Two: has appropriate treatment been tried first
Ketamine infusion is not a first-line treatment for anything in the list above, and any practice offering it as one is not treating you properly.
Before infusion therapy is reasonable, there should generally have been an adequate trial of the treatments with better evidence and lower cost for your condition. For neuropathic pain that usually means the standard nerve pain medications at adequate doses. For fibromyalgia it means the approved medications plus the exercise and sleep components. For post-surgical or structural pain it means a proper diagnostic workup and consideration of interventional options.
Adequate trial means a fair test, not a token one. A medication stopped after four days because of early side effects has not been tried. If that is where you are, the useful conversation may be about how to get through the adjustment period rather than about infusions.
Three: is it medically safe for you
This is the part that cannot be answered from a website, and it is why the evaluation exists. The following are examples of situations requiring caution or making treatment inappropriate. It is not a complete list.
- Poorly controlled high blood pressure. Ketamine can transiently raise blood pressure and heart rate.
- Significant cardiac disease, including unstable angina, recent heart attack, or certain arrhythmias.
- Increased intracranial pressure or certain intracranial conditions.
- Active psychosis or certain psychiatric conditions, where ketamine’s perceptual effects may be harmful.
- Pregnancy or breastfeeding.
- A history of substance use disorder involving ketamine, which requires careful discussion.
- Significant liver disease, since ketamine is metabolized by the liver.
- Certain bladder conditions, given known urinary effects associated with heavy long-term ketamine exposure.
Your full medication list also matters. Some medications interact with ketamine or may reduce its effect, so bring an accurate and complete list including anything over the counter.
Four: can you complete a course of treatment
This is the question patients most often overlook and the one that most reliably predicts whether treatment works out.
Chronic pain is rarely addressed with a single infusion. Treatment typically begins with a series over a compressed period, followed by maintenance at longer intervals if the series helps. A patient who completes two infusions of a planned series and stops has not had a fair trial of the treatment, and will often conclude it does not work when it was never given the chance.
You cannot drive yourself home after an infusion. Ketamine affects perception, judgment, and coordination for a period afterward. Every appointment requires someone to bring you home. Over a full series that is a real logistical commitment, and it is worth working out before you start rather than discovering it in week three.
The most common reason a course of treatment fails is not that the medication did nothing. It is that the course was never finished.
So before booking, think through practically: who can drive you, how often, and can you keep that going for the length of a series. If the honest answer is that you cannot, say so at the consultation. There may be ways to structure it differently, and if there are not, that is important to know.
What the evaluation involves
A consultation covers your pain history in detail, your diagnosis and how it was reached, everything already tried and how each performed, your full medical history and medication list, and your current function including sleep and activity. Mood is part of this conversation, because pain and mood interact and pretending otherwise produces worse care.
Bringing records, imaging, and a written list of treatments tried will make the visit considerably more productive. A complimentary MRI review is available if you would like your imaging looked at first.
You should leave the consultation knowing whether you are a candidate, what a course would involve, what it would cost, and what a realistic expectation looks like. If we do not think you are a good candidate, we will tell you and explain why.
| This suggests it is worth discussing | This suggests it is not, or not yet |
|---|---|
| A confirmed diagnosis in a centralized or neuropathic pain condition | Pain without a clear diagnosis, or an untreated structural cause |
| Adequate trials of first-line treatment without sufficient relief | First-line options not yet tried, or abandoned early |
| Stable cardiovascular health, medically cleared | Poorly controlled hypertension or significant cardiac disease |
| Reliable transport for every appointment in a series | No consistent way to get home after infusions |
| Understanding that the goal is reduction, not elimination | Expectation of a cure or a single-visit fix |
On expectations
The realistic goal is meaningful reduction in pain and improvement in function, not elimination of pain. Some patients respond substantially, some partially, and some not at all, and there is no test that predicts which group you fall into. Ketamine is not FDA approved for chronic pain, its use here is off-label, and it is not covered by insurance at this out-of-network practice.
Questions worth asking any practice offering this
Ketamine clinics have multiplied considerably, and quality varies. Whether or not you come to us, these are reasonable questions to ask anywhere you are considering, and a practice that cannot answer them well is telling you something.
- Who is physically present during the infusion, and what are their qualifications? Continuous monitoring by trained staff is not optional.
- Is a physician on site? Not reachable by phone, on site.
- What monitoring is used? Blood pressure, heart rate, and oxygen saturation should be tracked throughout, given the cardiovascular effects.
- What happens if something goes wrong? There should be a clear answer involving equipment and training, not reassurance.
- How is the dose determined? It should be calculated for you and adjustable, not a fixed protocol applied to everybody.
- What is the total cost of a full course? Not per infusion. The full number, so you can decide properly.
- What happens if it does not work? A practice with a considered answer has thought about patients who do not respond.
Be cautious of anywhere that promises results, describes ketamine as a cure, or is willing to schedule you without a proper medical evaluation first.
A board-certified anesthesiologist and pain physician placing the line and managing the infusion is a different level of care from a protocol administered by staff without that background. That distinction matters most on the rare occasion when something unexpected happens.
If you are not a candidate
A consultation that concludes ketamine is not right for you is not a wasted visit. Frequently the more useful outcome is a clear diagnosis, identification of a treatment that has not been properly tried, or a referral to something better suited.
We would rather tell you that than take payment for a treatment we do not believe will help. Patients remember which kind of practice they encountered.
We see patients at our Parsippany, Clifton, Hackettstown, and Hamburg offices, and no referral is required to schedule.
What to bring
A first consultation is far more productive with a few things in hand: a complete list of current medications including doses and anything over the counter, relevant imaging and records, a written history of treatments tried with what each one did, and the name and contact details of the physicians currently involved in your care.
If you can, write down the three things your pain stops you doing that you most want back. That gives the conversation a target beyond a number, and it makes it much easier to judge later whether treatment is achieving anything worth continuing.
Frequently asked questions
Do I need a referral?
No. You can schedule a consultation directly. Bringing records and imaging is helpful but not required to book.
How many infusions would I need?
There is no fixed number. Most protocols start with a series and move to maintenance at longer intervals if the series helps. The specifics depend on your condition and your response and are discussed at the consultation. What happens during an infusion is covered here.
Can I be treated if I take opioids?
Often yes. Your medication list is reviewed first, and taking opioids does not automatically exclude you.
Why is the driver requirement so strict?
Because ketamine affects perception and coordination for a period after the infusion ends. This is a safety matter and it applies to every appointment without exception, including maintenance visits.
What if I have high blood pressure?
Controlled hypertension is often manageable. Poorly controlled hypertension generally is not, since ketamine can transiently raise blood pressure. This is assessed individually.
Is it covered by insurance?
Generally not. This is an out-of-network practice that does not participate with Medicare or Medicaid. You will receive specific costs for a full course at your consultation so you can decide with complete information.
Find out where you stand before you spend anything.
A consultation gives you a direct answer about candidacy, including a straight no if that is the honest answer.
Medical disclaimer. This article is for general educational purposes and is not medical advice, nor does it create a physician-patient relationship. The candidacy considerations described here are general and incomplete; suitability can only be determined through individual medical evaluation. Ketamine infusion therapy for chronic pain is an off-label use and is not FDA approved for this indication. Individual results vary and no outcome is guaranteed. Do not start, stop, or change any medication based on this article. If you are experiencing a medical emergency, call 911.