Will Ketamine Help Sleep? We Explain Any Benefits
Last reviewed and updated: June 17, 2026.
Key Takeaways
| Direct effects | Suppresses REM sleep acutely (night after infusion), may increase slow-wave sleep; effects normalize in 1–3 days |
| Indirect effects (main driver) | Sleep improves as depression improves — depression is a primary sleep disrupter; treating it treats the sleep disruption |
| Risk of disruption | Stimulant-like activation post-infusion and post-session anxiety can disrupt that night’s sleep — transient for most patients |
| Post-infusion plasticity window | 24–72 hours after each session is especially important for sleep hygiene — disrupted sleep may blunt neuroplastic gains |
| When to flag sleep changes | Worsening sleep across a treatment course (not just night-of disruption) is meaningful clinical feedback — tell your provider |
If you’re thinking about trying ketamine therapy, you may be wondering, “will ketamine help sleep?” You may be asking yourself this if you are someone who struggles with sleep or you’re concerned that ketamine might negatively impact your sleep in some way.
The truth is that the relationship between ketamine and sleep is complex. Taking ketamine at a clinic is quite different from taking the substance recreationally, for example, and this can end up changing how ketamine affects your sleep.
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Ketamine Can Help Sleep By Improving Mental Disorders
Ketamine can help to improve the symptoms of depression, anxiety, and PTSD. By alleviating these symptoms, ketamine can help you enjoy deep, uninterrupted, and rejuvenating sleep again.
For example, a 2013 study found that patients with depression experience an increase in total sleep and a decrease of waking during the first and second nights after a ketamine infusion. Studies have also shown that ketamine therapy can help PTSD patients sleep without needing to use sedatives, as well as stop their nightmares.
Alex Dimitriu, MD, founder of Menlo Park Psychiatry & Sleep Medicine, underlines that ketamine “can lift mood, reduce anxiety, and improve sleep. But it absolutely shouldn’t be seen as something you can use on your own as a way to self-medicate.” The caution against self-medicating is important, as this could end up being counterproductive to sleeping well. Let’s explore why.
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Ketamine Can Sometimes Negatively Impact Sleep
A study published in Scientific Reports discovered that current ketamine users (both those with and without ketamine use disorder) and abstinent ketamine users have poorer sleep quality than healthy controls. The abstinent participants had abstained from ketamine for more than three months, yet they still had issues with sleep. This illustrates that all kinds of recreational ketamine use can negatively impact sleep quality.
While self-medication is not strictly the same as recreational use, the former kind of use can still turn into drug abuse and addiction. This is because, when you self-medicate, you take the drug in an uncontrolled way and without medical supervision.
Those self-medicating psychedelics, or using them recreationally, can end up taking higher doses of the drug. This could lead to an increase in frequency of use as well. When this happens, ketamine can lead to poorer quality sleep. Indeed, research has demonstrated that the acute use of ketamine has a different effect on sleep than chronic use.
Looking for ketamine therapy? Click here to find top rated ketamine clinics near you
But Why Could Ketamine Adversely Affect Sleep?
There are several possible reasons why. The authors of the Scientific Reports study note that “poor sleep was positively associated with craving for ketamine, indicating a potential role of craving in mediating the relationship between sleep problems and ketamine use.” If you develop a psychological addiction to ketamine through self-medicating or recreational use, then your cravings for the drug can disrupt your sleep.
Also, while ketamine can have sedative effects, it can have stimulating effects as well. Many recreational users often take a dose to give them energy at a club, party, or festival. If taking ketamine this way, you may then use the drug late into the night and early morning. This will affect your sleep in two ways.
Firstly, you will be interrupting your natural sleep-wake cycle, by going to bed at an unusual time. Secondly, the stimulating effects of the ketamine will make it harder to fall asleep when you try to.
In contrast, at a ketamine clinic, you will undergo ketamine treatment during the day, not late at night. So by the time you’re ready for the bed, the effects of ketamine would be long gone. In this context, ketamine won’t disrupt your sleep.
RELATED: CDC Study: Illegal Ketamine Is Increasingly Involved in Overdose Deaths
Pay Attention To Sleep Hygiene After Ketamine Therapy
While there’s evidence that points to ketamine therapy’s ability to improve sleep, it doesn’t mean you should ignore sleep hygiene. After ketamine treatment, it’s important to ensure that you take steps that ensure good quality sleep, including the below.
- Sticking to a healthy, nutritious diet
- Go to bed at the same time every night, regardless of feeling tired
- Avoid light sources prior to bed and in bed (especially blue light)
- reserve the bed for sleep and sex only
- Regularly exercising
- Reducing stress
- Not sleeping too late
- Getting enough sleep (7-9 hours)
By neglecting sleep hygiene, there’s a higher risk of worsening your mental health. This, as we have seen, can then exacerbate poor sleep. Ketamine can help you to sleep soundly again, but it is no substitute for good sleep hygiene.
RELATED: Video: Theo Von Explains What Ketamine Therapy Was Like
Finally, combining therapy with a ketamine infusion (ketamine-assisted psychotherapy) may help with sleep more than just the ketamine infusion alone. This involves talking about your ketamine experience with a trained therapist so that you can better make sense of it and apply it meaningfully to your life. This can help to enhance and maintain improvements in mental health — which, of course, will be better for your sleep.
What The Research Shows on Ketamine and Sleep in 2025
The relationship between ketamine and sleep is more nuanced than a simple “helps” or “hurts” answer. Research through 2025 suggests ketamine’s effects on sleep are primarily indirect — driven by its impact on depression and pain rather than direct sleep-promoting mechanisms — but the picture includes some direct effects as well.
The depression-sleep connection. Sleep disruption is one of the most consistent symptoms of depression — insomnia, early waking, non-restorative sleep, and hypersomnia all appear at elevated rates. When ketamine works for treatment-resistant depression, it often improves sleep as a downstream effect of mood improvement. Studies following patients through ketamine infusion courses typically show sleep quality improving alongside depression scores, often within the first week of treatment. This isn’t a direct sleep effect — it’s the consequence of treating the condition that was disrupting sleep in the first place. For patients whose insomnia is driven by depression or rumination, this indirect effect can be clinically meaningful.
Direct effects on sleep architecture. At doses used in therapy, ketamine does affect sleep architecture directly. It tends to suppress REM sleep in the first night after an infusion (a common finding with NMDA antagonists) and may increase slow-wave (deep) sleep. The REM suppression is typically transient — normalizing over subsequent nights. For patients undergoing a 6-session induction course, sleep quality generally trends positive over the treatment period despite this acute REM disruption, likely because the antidepressant effect more than compensates.
The suicidal ideation exception. One specific finding worth noting: ketamine has shown rapid, robust effects on suicidal ideation — often within hours. Suicidal ideation is strongly associated with sleep disturbance (particularly insomnia with early waking). Studies of ketamine in acutely suicidal patients have observed sleep improvement alongside ideation reduction. Whether this represents a direct ketamine-sleep mechanism or the downstream effect of reducing acute psychological crisis is debated — but clinically, patients and their providers have noted it.
Sleep Hygiene After Ketamine Therapy
Regardless of ketamine’s direct effects, maintaining good sleep hygiene during and after a ketamine treatment course amplifies outcomes. The post-infusion window is characterized by heightened neuroplasticity — new synaptic connections are being formed, and the brain is particularly receptive to behavioral reinforcement. Disrupted sleep during this window may compromise the neuroplastic gains. Clinical guidance from most ketamine therapy providers includes: avoid alcohol on infusion days and the night after; maintain a consistent sleep-wake schedule through the treatment course; avoid stimulants in the afternoon; use the post-session relaxation state productively (journaling, integration therapy, rest); and alert your provider if sleep worsens significantly, as this may indicate a need for dosing adjustment.
Frequently Asked Questions
Does ketamine improve sleep?
For most patients undergoing ketamine therapy for depression, sleep quality improves — primarily as a downstream effect of treating the depression itself. Depression is a major driver of sleep disturbance, so when ketamine works for treatment-resistant depression, it commonly improves sleep as part of the broader mood improvement. There is also a direct effect on sleep architecture: ketamine typically suppresses REM sleep temporarily (the night after an infusion) while sometimes increasing deep slow-wave sleep. Most patients report improved sleep quality over the course of a full treatment series, even though the first night after an infusion may show altered sleep patterns.
How long do ketamine’s sleep effects last?
The acute effects on sleep architecture (REM suppression, altered slow-wave sleep) are transient — typically normalizing within 1–3 days after a session. The broader sleep benefit tied to depression improvement generally tracks the duration of ketamine’s antidepressant effect, which varies by individual — ranging from days to weeks or months. For patients who respond well to a full 6-session induction course, sleep improvements may persist for a similar duration to their antidepressant response. If depression recurs, sleep disruption typically recurs with it, which is one signal that a maintenance infusion may be warranted.
Can ketamine cause insomnia or make sleep worse?
Yes, for some patients. The dissociative effects of ketamine and the stimulant-like cardiovascular activation at certain doses can make it difficult to sleep immediately after a session, particularly in the hours following an infusion. Anxiety or dysphoria during or after a session (which occurs in a minority of patients) can also disrupt that night’s sleep. Some patients report vivid dreams or altered sleep quality in the nights following an infusion. These effects are generally transient and self-resolving. If sleep quality degrades over a course of treatment (rather than the expected improvement), discussing dosing and timing adjustments with the prescribing provider is appropriate — some patients do better with morning than afternoon sessions.
What should I do if my sleep gets worse after ketamine infusions?
Alert your provider — worsening sleep is worth tracking as clinical data. Short-term: avoid alcohol, caffeine after noon, and heavy exercise in the 4 hours before bed on infusion days; create a consistent wind-down routine. If anxiety from the infusion experience is disrupting sleep, your provider may adjust dosing, timing, or recommend integration therapy to process the experience. The post-infusion neuroplastic window (roughly 24–72 hours) is particularly important for good sleep hygiene — disrupted sleep during this window may compromise the treatment benefit. If sleep worsening persists across multiple sessions without improvement in depression, that is meaningful clinical feedback for your treatment team.
