Cannabis Detox

Laura Smart - Author for Rehab Clinics Group

Laura Smart - Last Updated: May 30, 2023 | All Sources

Last reviewed: September 27, 2022 by Dr Alexander Lapa. All information on this page has been reviewed and verified by a certified addiction professional.

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Despite not being a highly addictive drug, cannabis has a high potential for abuse. One of the most difficult hurdles in overcoming cannabis addiction is the behavioural withdrawal symptoms. The best way to deal with cannabis addiction is to seek addiction treatment and advice from a medical professional.


To help you build a life that is free from any dependency on the drug, we can offer medically assisted detoxification plans to help remove all the harmful toxins that come with consistent use of Cannabis.

Cannabis detox

We have addiction centres all across the UK and can help you find the most suitable rehab centre for your individual needs.

Cannabis, commonly known as weed or marijuana, has been legalised in many countries and is used by people because it produces feelings of contentment, happiness, and mild euphoria. Many people believe that there is nothing wrong with smoking the odd joint and that cannabis is harmless, but this is not necessarily true.


Cannabis Addiction is Real

Using cannabis for a prolonged period of time can lead to changes in the chemical makeup of your brain, and in time your body will become psychologically and physically tolerant to the drug. When this happens, you will see an increase in your intake of cannabis to achieve the desired effects, making it increasingly difficult to avoid developing an addiction.

Despite the change in its legal status in many parts of the world, cannabis remains one of the most widely misused substances in the UK.[2] Many people need to attend and complete a cannabis detox and rehab programme to deal with their marijuana addiction.

Marijuana is derived from the cannabis plant and contains a chemical known as tetrahydrocannabinol (THC). THC is often used for medical purposes to treat symptoms of neurological disorders like epilepsy and multiple sclerosis. When you smoke cannabis recreationally, THC is absorbed by the lungs and travels through the bloodstream to the brain.

The THC absorbed by the brain acts on cannabinoid receptors and affects your central nervous system, resulting in feelings of tranquillity, wellbeing, calmness, mild euphoria, and even an altered reality.

Smoking cannabis is a pleasurable experience for most people, but it can affect your mental and physical health, altering your heart rate and blood pressure. Other negative side effects include nausea, paranoia, confusion, hallucinations, panic, and anxiety.

Suppose you abuse cannabis over a long period of time. In that case, your body will become accustomed to the elevated levels of THC in the bloodstream and adapt to function normally. If you stop using cannabis, you will experience withdrawal symptoms, which often cause people to relapse and start using again to cope with the unpleasant side effects of withdrawal.



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Cannabis Detox and Withdrawal Symptoms

Withdrawal symptoms differ from one person to the next; the severity and duration of withdrawal will depend on many factors, including the amount of cannabis you habitually consume, the frequency of your cannabis use, how long you have been taking the drug, whether is consumed with other street drugs or alcohol and the presence of any pre-existing physical or mental health problems.

Withdrawal symptoms can be both physical and psychological and include,

  • Sweating, fever or chills
  • Cravings
  • Insomnia and disrupted sleep patterns
  • Decreased appetite
  • Anxiety
  • Depression
  • Irritability[1]

After long-term use, when you suddenly stop smoking cannabis, your body will naturally try to purge all remnants of the drug from your system, leading to withdrawal symptoms that are mildly uncomfortable However, with the correct support from a medical professional and a team of rehab specialists, you can overcome the withdrawal symptoms and detox safely.

Coping with Cannabis Detox

Cannabis detox can be an unpleasant experience, and this causes many people to relapse, but effective marijuana detox and sustained rehabilitation are possible with the right support. The most difficult part of cannabis detox is the first 48 hours or two days.

The withdrawal symptoms will typically take five to ten hours to manifest, which is when the symptoms will be at their worst. If you are an inpatient at a residential rehab clinic and under medical supervision, you may be given medication to ease withdrawal.

In many cases, therapy and counselling are enough to help addicts overcome their addiction. In more severe cases, medically assisted detox may be necessary to reduce the withdrawal symptoms and detox comfortably. During medical detox, you will be prescribed medication to help alleviate the withdrawal symptoms and make them more bearable.

It is important to note the medications used in medically assisted detox can be highly addictive; it is usually only offered as part of a residential detox programme where you can be under constant medical supervision.

Physical detox is only one aspect of overcoming your drug habit. A successful cannabis detox programme will use a holistic approach that will tackle both the physical and psychological side effects of cannabis withdrawal.

Most cannabis addiction treatment centres offer counselling, therapy and group sessions to help addicts deal with the underlying causes of their addiction. Once you leave the rehab facility, you can join an outpatient support group like Marijuana Anonymous to help you sustain your rehab and prevent a relapse.

The duration of cannabis detox and rehab depends on various factors, including the length of your addiction, the severity of your addiction, how much cannabis you regularly consume, and any underlying physical or mental health issues. Some people may need a week to detox, but others could take longer.

If you enter a residential cannabis rehab treatment centre, you will be there for 24-hours a day for the duration of your stay. As with all drug addiction treatments, the length of a cannabis rehab programme will vary from one person to the next, but typically, detox and rehab take 28 days.

Cannabis detox treatment

When you enter cannabis rehab, you will be assessed by a medical team who will consider all aspects of your cannabis addiction before drawing up a treatment plan tailored to your needs.

We understand that cannabis detox is challenging at the Rehab Clinics Group, but we are here to help you overcome your addiction. Contact us today to find out more about living a drug-free life.



  • Is cannabis withdrawal dangerous?

    The withdrawing effects from drugs can differ from person to person. The withdrawal symptoms from cannabis can be uncomfortable, however they are not usually dangerous in comparison with withdrawal from alcohol or opioids, which can be life-threatening. At Rehab clinics group we are experts in making sure your withdrawal process is as comfortable as possible.
  • How much does Cannabis detox cost?

    The cost of cannabis detox varies depending on the centre you choose, the treatment option you choose, and the amount of time you need treatment for. When looking for a rehab centre, it is important you take into account your specific needs to make sure you have the best chance of addiction recovery.
  • Where can I go to detox from Cannabis?

    Cannabis is the most commonly used illegal substance within the UK. Some people have a false view that as they have no dangerous side effects from the drug, it is safe to use without the issue of addiction. Here at Rehab clinics group, we have rehab treatment centres around the UK making sure you have the best chance to live an addiction free life. Call our team today to enquire about our rehab centres.
Dr Alexander Lapa - Psychiatrist & Clinical Reviewer for Rehab Clinics Group

Dr Alexander Lapa - Clinical Reviewer - Last reviewed: September 27, 2022

MBBS, PG Dip Clin Ed, OA Dip CBT, OA Dip Psychology, SCOPE Certified

Dr Lapa graduated in Medicine in 2000 and since this time has accrued much experience working in the widest range of psychiatric settings with differing illness presentations and backgrounds in inpatient, community and secure settings. This has been aligned to continuation of professional development at postgraduate level in clinical research which has been very closely related to the everyday clinical practice conducted by this practitioner as a NHS and Private Psychiatrist.
He is fully indemnified by the Medical and Dental Defence Union of Scotland (MDDUS) and MIAB Expert Insurance for Psychiatric and Private Medical practice. He is fully registered with the General Medical Council (GMC) in the UK with a licence to practice.

Dr Lapa is approved under Section 12(2) of the Mental Health Act (1983)

Member of Independent Doctors Federation (IDF), British Association for Psychopharmacology (BMA) and The Association for the Study of Obesity (ASO)

Dr Lapa’s extensive experience has also concentrated on the following areas of clinical practice:
– Assessment, Diagnosis and Pharmacological Treatment for Adults with ADHD.
– Drug and Alcohol Dependency and maintaining abstinence and continued recovery
– Intravenous and Intramuscular Vitamin and Mineral Infusion Therapy
– Dietary and Weight Management and thorough care from assessment to treatment to end goals and maintenance
– Aesthetic Practice and Procedures