How Does Ketamine Affect the Body, and Why Is It Addictive?
Is Ketamine Really Addictive? Understanding the High, the Side Effects, and Safe Recovery
Ketamine is genuinely addictive, particularly in the form of psychological dependence, because it creates an experience the brain remembers as “escape, lightness, and disconnection from feeling” — making the user want to return to it again and again. As use becomes more frequent, the dose typically increases along with tolerance, throwing thinking, emotion, and decision-making out of balance.
In psychiatry, ketamine is classified as a dissociative anesthetic, acting primarily by blocking NMDA receptors, which can cause effects ranging from anxiety to psychosis-like symptoms.
What Does Ketamine’s “Dissociative High” Actually Feel Like?
Many people call this experience “hallucinating,” but what makes ketamine distinctive is that it produces dissociation — a sense of detachment — rather than the vivid visual hallucinations associated with LSD. Some people experience both at once.
Common symptoms include:
- A sense of separation from the body, or floating outside it (depersonalization), and a feeling that the world isn’t real, like being in a dream (derealization)
- Distorted perception of time, feeling like it’s slowing down or speeding up
- Heightened or altered sensory perception — colors, sounds, and music feeling “too vivid,” or a blending of senses (some describe it as “seeing sound, hearing color”)
- Extreme mood swings, from blissful to panicked and paranoid
- In some cases, delusions, hearing voices, hallucinations, and confused thinking that can extend beyond the period of intoxication — with risk rising in people with underlying mental health issues or those using multiple substances together
For families, the warning sign to watch for is that “after using,” the person may speak incoherently, seem spaced out or disconnected from reality, show abnormal fear, or become irritable and aggressive in a way that’s hard to control. This is a signal that calls for immediate assessment by a specialist.
An Important Side Effect to Know: Ketamine-Induced Cystitis (Ketamine Bladder)
Ketamine bladder, or ketamine-induced cystitis (KIC), is chronic bladder inflammation caused by repeated ketamine use. It’s common among long-term users and can become severe enough to shrink the bladder or affect the kidneys.
Common symptoms include:
- Frequent urination and sudden urgency
- Painful, burning urination and lower abdominal pain
- Blood in the urine (hematuria)
- Inability to hold urine, with a significant decline in quality of life
The good news is that stopping ketamine use is the cornerstone of treatment, and many people see improvement once they commit to quitting, combined with urinary tract care.
An Overlooked Side Effect: Bile Duct and Biliary Tract Problems
Chronic ketamine use is associated with biliary tract abnormalities (ketamine-associated cholangiopathy), such as bile duct dilation, jaundice, abnormal liver function, and, in some cases, upper right abdominal or epigastric pain. Some sources suggest this may be related to irritation or damage to the biliary lining, or effects on bile flow (including tightening of the biliary sphincter).
Warning signs that require urgent medical attention include chronic upper right abdominal pain, nausea, loss of appetite, jaundice, dark urine, and pale stools.
An Effective Recovery Approach: Why Close Psychological Care Matters Alongside Physical Care
Ketamine tends to leave two kinds of impact at once:
- Brain and mind: anxiety, depression, paranoia, delusions or hallucinations, or brain fog with reduced memory and concentration, some of which can persist after stopping the drug.
- Nervous system and organs: bladder, kidneys, biliary tract, and liver.
Recommended recovery approach (done step by step, for lasting results):
- A holistic assessment: substance use history, suicide/self-harm risk, co-occurring psychiatric conditions (such as depression, bipolar disorder, or psychosis), and any necessary physical examinations
- Careful monitoring during the withdrawal period for confusion, panic, insomnia, and hallucinations or paranoia
- Psychological therapy to break the cycle of craving, such as individual therapy, group therapy, and relapse-prevention skills
- Treatment for specific complications:
- For abnormal urinary symptoms, see a urologist for evaluation and a treatment plan for ketamine bladder
- For abdominal pain, abnormal liver function, or jaundice, assess the liver and biliary tract
- Post-program planning, with continued follow-up for several months up to a year, because “the addicted brain” needs time to recover
If Someone at Home Is Addicted to Ketamine, Where Do You Start?
- Start with “safety.” If there are severe hallucinations, aggression, an inability to control oneself, or a risk of harm to self or others, contact a specialist right away.
- Avoid blame or threats — use short, clear statements, such as: “We’re worried about your safety. Today, we’d like to take you for an assessment first.”
- Families don’t need to solve this alone. Bringing someone into an addiction treatment center with a mental health team greatly increases the real chance of quitting.
If you or someone you love is facing an addiction problem, don’t wait. Getting into treatment sooner means a better chance of recovery. Contact Day One Rehabilitation Center, a leading addiction treatment center, for consultation and comprehensive care.
Phone: +66 2-028-7775
LINE: @dayone
Location: 99/1 Moo 6, Si Chula, Mueang Nakhon Nayok, Nakhon Nayok 26000, Thailand (only a 1-hour drive from Bangkok)