Ketamine and Mental Health

Last checked by Michael Williams. Michael (Mikey) is the Treatment Manager at Abbington House and has been in recovery since 2011. He oversees the day-to-day delivery of care and brings lived experience into the work.

Ketamine use rarely sits on its own. For some people, it starts socially and only later becomes tied to anxiety, depression, ADHD, trauma, stress, low self-worth, or the need to switch off from thoughts and feelings that have become too much.

This page looks specifically at the link between ketamine and mental health. If you are trying to understand whether ketamine use has become a problem overall, our ketamine addiction page is a better place to start. If you are already looking for treatment, our ketamine rehab page explains how residential support works at Abbington House.

When Ketamine Starts Affecting Mental Health

For some people, ketamine first feels like relief. It can create distance from stress, anxiety, memories, or the intensity of everyday life, and that distance can feel useful, especially if someone has been carrying difficult emotions for a long time.

The problem is that the relief is temporary. When the effects wear off, the same feelings are usually still there, and sometimes they feel sharper. Over time, ketamine can become part of a cycle where someone uses it to escape discomfort, then feels worse when they are not using. This is one reason it can become difficult to stop. It is not always about chasing a high; sometimes it is about trying not to feel something else.

How Ketamine Affects Mood and Thinking

Ketamine is a dissociative drug, which means it can change how someone experiences their body, thoughts, emotions, and surroundings. While using, people may feel detached, numb, dreamlike, or disconnected from what is happening around them, and for some that disconnection is part of the appeal.

Repeated use can begin to affect how someone feels when they are not using. The effects fall into two broad timeframes.

Short-term effects can include feeling detached from the body or surroundings, emotional numbness, confusion, anxiety or panic, low mood after use, memory gaps, difficulty concentrating, and, especially at higher doses, paranoia or unusual thoughts. The same person can experience ketamine differently at different times, calm and separate from their problems on one occasion, unsettled or frightened on another.

Longer-term, with repeated use, the impact tends to build quietly rather than dramatically: lower motivation, poorer memory, emotional flatness, more anxiety or low mood, increased isolation, and a growing reliance on ketamine to cope. Someone may not notice how much has shifted until life outside ketamine starts feeling smaller. People sometimes describe feeling detached from who they used to be, or frightened by changes in their thinking or memory.

This page focuses on the mental health impact of ketamine. For physical complications such as urinary urgency, pain, and bladder damage, see our ketamine bladder page.

Ketamine, Anxiety and Depression

Ketamine use can become closely linked with anxiety and depression. Some people use it because they already feel anxious or low; others notice their mental health getting worse after repeated use. The cycle is hard to untangle: ketamine may offer short-term escape from anxious thoughts or low mood, but the underlying feelings return when it wears off, and sleep disruption, isolation, shame, and the physical effects of use then add more pressure.

Over time, someone may begin using not because they want to, but because they feel unable to sit with how they feel without it. That is often a sign the drug has become part of the mental health problem rather than a way out of it.

Ketamine, Trauma and ADHD

For people with trauma or painful past experiences, ketamine can become a way to create distance from feelings that are hard to manage, switching off from memories, fear, shame, or the constant pressure of being on edge. That escape can make sense in the short term, but emotional numbing makes it harder to process what is underneath, and someone may end up feeling less connected to themselves and less able to manage emotions without using.

Others describe ADHD, suspected ADHD, or long-running overwhelm, restlessness, and difficulty switching off. Ketamine can feel like a pause button on that internal pressure, easier for a while than the racing thoughts or emotional intensity, but repeated use tends to make motivation, routine, sleep, and relationships harder to hold together.

Where trauma, ADHD, or overwhelm are part of the picture, they need to be understood alongside the ketamine use rather than treated as separate. It is not enough to tell someone to stop; treatment has to understand what ketamine has been helping them avoid, and what support is needed once that escape is removed.

Can Mental Health Improve After Stopping Ketamine?

For many people, yes. Mental health often begins to improve once ketamine use stops and sleep, routine, and emotional stability start to recover, with clearer thinking, better memory, and more emotional range returning over time.

That does not always happen immediately. The first stage of stopping can feel uncomfortable, with low mood, cravings, anxiety, sleep problems, and emotional flatness all appearing when ketamine is removed. Our ketamine withdrawal timeline explains what this can feel like. Improvement is usually strongest when someone has support for both the ketamine use and the mental health difficulties around it, because if anxiety, depression, trauma, or ADHD were part of why ketamine became important, those still need care after the drug is gone.

When to Seek Urgent Help

Some mental health symptoms need urgent support. Seek immediate help if you or someone else is experiencing suicidal thoughts, feeling at risk of harm, becoming very confused, hearing or seeing things that others cannot, feeling extremely paranoid, or behaving in a way that feels unsafe.

If there is an immediate risk of harm, call 999 or go to A&E. For urgent mental health support in the UK, you can call NHS 111, and the Samaritans are available free, day or night, on 116 123. Urgent help is also important if ketamine has been mixed with other substances, or if symptoms feel sudden, severe, or out of character.