How long will the effects of ketamine last?

After taking a ketamine lozenge, you can expect to begin feeling the effects in about 10-15 minutes. Each patient’s experience is different, but these effects typically last for between 40 and 80 minutes.


Although you may feel fully alert and awake once your ketamine session is over, we require patients to abstain from engaging in any activities that require high levels of cognitive and motor function, such as driving a car or operating heavy machinery, for at least 6 hours following their treatment session. Ketamine can impair your ability to perform these tasks and may pose a significant risk to yourself and others. For maximum safety, we require patients to designate an Ally- a trusted friend, family member, or roommate- to be in proximity and able to check in on the patient for the extent of the session.

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