Emergency Protocols in Telehealth Ketamine Programs

At-home ketamine therapy is generally safe when properly screened patients follow prescribed protocols. Serious adverse events are rare. But rare is not zero—and the absence of clinical staff in the room means patients and their sitters must be prepared to respond if something unexpected occurs. This article covers what can go wrong, what to do when it does, and what good programs do to prepare you.

Understanding the Risk Landscape

Before covering emergencies, it helps to understand what the actual risks are. The risk profile of at-home sublingual or oral ketamine is meaningfully different from IV ketamine in a clinical setting (for a full comparison, see our telehealth vs. in-person clinics article):

• Bioavailability is lower: Sublingual ketamine delivers 25-30% of the dose to the bloodstream (compared to 100% for IV). This lower exposure means lower risk of extreme cardiovascular effects or respiratory depression.
• The experience is less intense: At-home doses are calibrated for a manageable therapeutic experience, not the deep anesthetic doses used in surgical settings.
• Onset is gradual: Unlike IV ketamine, which takes effect in seconds, sublingual onset over 15-30 minutes allows for early intervention if the patient is unexpectedly sensitive.

The most common adverse events in at-home ketamine programs are nausea/vomiting, psychological distress during the experience, and cardiovascular changes (primarily elevated blood pressure). Life-threatening events are rare but possible in susceptible individuals.

Before the Session: Preparation as Prevention

The most important emergency protocol is not what you do when something goes wrong—it is what you do to reduce the likelihood of an emergency occurring.

Pre-Session Vital Sign Check

Take and record your blood pressure and heart rate before every session. Providers establish contraindication thresholds—typically, a systolic blood pressure above 160-180 mmHg or a heart rate above 100-110 bpm would warrant calling the provider before proceeding. Do not self-authorize a session if your vitals are outside the parameters your provider established.

Emergency Contact Information Posted

Before every session, ensure the following numbers are written down or easily accessible—do not rely on memory when impaired:

• Your telehealth provider's emergency line or on-call number
• Poison Control: 1-800-222-1222
• Local emergency services: 911
• Your sitter's phone (saved and available)

Your sitter, not you, may need to make these calls. Make sure they know where to find this information. For a complete guide to the sitter role, see our article on support systems for at-home ketamine therapy.

Sitter Briefing

Your sitter must know:

• What ketamine is and that it is a prescribed medication being used as directed
• What a normal session looks like vs. what would be concerning
• The contact numbers listed above
• That if you lose consciousness, are unresponsive, stop breathing, or are having a seizure, they should call 911 immediately

Cardiovascular Emergencies

Ketamine can transiently elevate blood pressure and heart rate. For most patients with normal cardiovascular baselines, this is a manageable and self-resolving physiological response. For patients with hypertension, cardiovascular disease, or other risk factors, it can be dangerous.

Signs of Concern

• Severe headache during the session (particularly the "worst headache of their life" quality—this can indicate dangerously elevated blood pressure)
• Chest pain or pressure
• Palpitations that feel abnormal or distressing
• Sudden extreme elevation in heart rate (rapid, pounding pulse that does not calm)

What to Do

If a patient reports severe headache, chest pain, or abnormal heart rhythm during a session:

1. The sitter should immediately contact the provider via phone or video
2. If the provider is not immediately reachable, call 911
3. Keep the patient calm and lying down; do not allow them to stand or move suddenly
4. Provide any emergency cardiac information to the responding medical team

Severe Psychological Distress

Difficult psychological experiences are common in ketamine therapy—they are not always emergencies. Fear, sadness, confusion, and agitation can all occur and are typically manageable. An emergency is:

• Extreme, sustained terror or panic that cannot be calmed
• Severe dissociation where the patient appears completely unresponsive to the sitter
• Emergence of psychotic features (the patient believing something dangerous and acting on it)
• Self-harm behavior or statements of intent

What to Do

The sitter should:

1. Speak calmly and directly to the patient: "You are safe, you are at home, this is the ketamine, and it will pass."
2. Try gentle physical grounding: placing a hand on the patient's arm or leg (if the patient is receptive) can help re-anchor them
3. Contact the provider immediately—many programs have on-call staff specifically for acute psychological support during sessions
4. If the patient is actively attempting to harm themselves or leave the house in an unsafe state, call 911 and describe the situation: a patient on prescribed medication is experiencing psychological distress

Do not leave a patient alone during severe psychological distress.

Nausea and Vomiting

Nausea is one of the most common adverse effects of ketamine and is rarely dangerous in itself. However, vomiting while significantly impaired and lying down poses an aspiration risk.

Prevention

• Fast as directed before the session
• Take prescribed anti-nausea medication (if provided) before dosing
• Avoid smoking before sessions

If Vomiting Occurs

1. Help the patient to a seated or side-lying position to prevent aspiration
2. Keep the area clear of hazards
3. Ensure airways remain clear
4. Contact the provider to report the event

If the patient vomits and then becomes unresponsive or appears to have aspirated (blue lips, struggling to breathe, gurgling sounds), call 911 immediately.

Loss of Consciousness / Unresponsiveness

At therapeutic sublingual doses, true loss of consciousness to the point of unresponsiveness is very rare. But if a patient appears to be unconscious rather than simply deeply in the ketamine state:

Test responsiveness: Speak loudly and clearly. Gently touch their shoulder. If there is no response to verbal or physical stimulation, this is a medical emergency.

Check breathing: Is the chest rising and falling? Are there signs of labored breathing?

Call 911 immediately. Tell the dispatcher that the patient is on prescribed ketamine medication, the dose they took, and what you are observing.

If the patient is not breathing and has no pulse, begin CPR and continue until emergency services arrive.

Responding When the Video Connection is Lost

If the provider loses the video connection during a session and cannot re-establish it:

• The provider should call the patient's sitter or emergency contact number on file
• The sitter should check on the patient immediately and report their status
• If the patient cannot be reached by phone and the provider cannot confirm safety, the provider may be required to dispatch a wellness check

Both the patient/sitter and the provider share responsibility for maintaining a backup communication channel throughout sessions.

What Reputable Programs Do to Prepare You

Strong telehealth ketamine programs do not leave emergency preparation to chance:

• They provide written emergency protocols before the first session
• They require a sitter for early sessions
• They include emergency contact information in every patient communication
• They have on-call clinical staff available during session hours
• They conduct pre-session vital sign checks and establish clear thresholds
• They conduct a follow-up call after each session and have clear escalation pathways if a patient reports concerning post-session symptoms

If a program you are considering does not address emergency preparedness in its onboarding materials, that is a meaningful gap to ask about before enrolling. See our red flags guide for more warning signs of substandard programs.

References

• StatPearls: Ketamine — Comprehensive clinical reference on ketamine pharmacology, mechanisms of action, and therapeutic applications
• PubChem: Ketamine Compound Summary — NCBI chemical database entry with ketamine molecular data, pharmacokinetics, and bioactivity profiles
• MedlinePlus: Ketamine — National Library of Medicine consumer drug information on ketamine including uses, proper administration, and precautions
• HHS: Telehealth — U.S. Department of Health and Human Services guide to telehealth services, regulations, and patient resources
• SAMHSA: National Helpline — Substance Abuse and Mental Health Services Administration free treatment referral and information service