Last Updated:
August 4th, 2026
There’s a stubborn belief that cannabis isn’t really addictive, that you can’t get hooked on it and there’s nothing to come off. It’s one of the most common things people say about the drug and it leaves a lot of people confused when they try to stop and feel truly awful.
The truth is that cannabis withdrawal is real; it’s recognised in clinical settings, it has a measurable set of symptoms and while it isn’t life-threatening, it can be distressing enough to send people straight back to using.
What is cannabis withdrawal?
Cannabis withdrawal is the set of symptoms that appear when someone who uses regularly stops or cuts down. It happens because the brain has adapted to the constant presence of the drug and when that’s removed, it takes time to readjust.
The active ingredient in cannabis, THC, acts on a system in the brain that helps regulate mood, sleep, appetite and stress. With regular heavy use, the brain responds by dialling down its own activity in that system to compensate.
When the THC is suddenly gone, the brain is left underactive in exactly the areas that govern how you feel and the result is withdrawal.
This is the same basic process behind withdrawal from other substances. The brain adapts to what it’s given and the space left when it stops is what you feel.
It’s worth saying plainly, because the myth is so persistent: needing to come off something is a sign of dependence and cannabis can absolutely produce it.
How strongly someone experiences withdrawal symptoms depends on how they are used. Frequency, how long they used for, the potency of what they used and their own mental health all shape the experience, which is why two people stopping at the same time can have very different weeks.
Additional Read: Is Having a Panic Attack Normal During Detox Withdrawal?
The symptoms of cannabis withdrawal
Cannabis withdrawal is recognised in the diagnostic manuals clinicians use, with a defined set of symptoms. They vary from person to person but the most common ones are well established:
- Irritability
- Anxiety
- Trouble sleeping, including vivid or strange dreams
- Low mood
- Reduced appetite
- Restlessness
- Strong cravings for cannabis
These are real, measurable symptoms, not a sign of weakness or imagination. Some people also notice physical effects like stomach discomfort, sweating, shakiness or headaches. For someone who didn’t believe cannabis could cause withdrawal at all, the experience can be deeply disorienting.
How long does cannabis withdrawal last?
Cannabis withdrawal follows a fairly predictable course, which helps you know when you’re in the middle of it.
Symptoms usually begin within the first day or two after stopping. They peak somewhere in the first week, usually around days two to six, when symptoms like irritability and cravings are at their strongest. From there, most symptoms ease over the following one to two weeks as the brain readjusts.
Some effects can outlast the main withdrawal, though. Sleep disturbance and changes in mood, in particular, can linger for a few weeks longer, especially after heavy, long-term use. Knowing this in advance helps, because the temptation to start using again is strongest precisely when the symptoms feel worst and understanding that they pass can be what gets someone through.
What makes cannabis withdrawal more severe
For a lot of people, cannabis withdrawal is mild but some do experience a real struggle in dealing with the process. This is based on other factors, which we’ll explore below:
Cannabis withdrawal coupled with dependence
This last point is the one worth dwelling on, because it explains so much about why stopping is hard.
Withdrawal reveals just how much cannabis was doing beneath the surface. Plenty of people don’t realise how much they were relying on it until they stop and sleep quality disappears or feelings of old anxiety return.
That’s the link between withdrawal and dependence and if you’ve been using cannabis to self medicate in other areas, you might well find that stopping cannabis triggers mental, as well as physical withdrawal symptoms. Recognising that is usually the first real step toward dealing with it properly, because it moves the question from “how do I get through a rough week” to “what was I using this to manage and what could meet that need instead.”
It also reframes what stopping actually involves. If cannabis was holding together fragile parts of your life, then quitting isn’t simply a matter of riding out a fortnight of symptoms. It means finding other ways to meet the needs the drug was covering, which is exactly the work that makes stopping stick.
Cannabis is now one of the most common reasons people come forward for drug treatment in England, so anyone finding it hard to stop is in very large company. Struggling to quit isn’t a personal failing, it’s a recognised feature of a drug that a lot of people underestimate.
Where you can get help
If you’ve tried to stop using cannabis and found it harder than you expected or you’re starting to suspect you rely on it more than you’d like, support is available.
Your GP can be a starting point and local drug services can be approached directly, usually without a referral. If you’d prefer to talk through structured support, including help with both the withdrawal and what sits underneath it, you can speak to us directly.
How Oasis Runcorn can help
If anything on this page has struck a chord, whether about your own use or someone you care about, Oasis Runcorn can help.
We provide treatment for cannabis dependence across the UK, with support through the withdrawal period and therapy that looks at what the cannabis was being used to manage. Treating the reason behind the use is what makes stopping last, rather than white-knuckling through a difficult fortnight alone.
You don’t need to have it all worked out before you get in touch. Contact us today for a confidential conversation, with no pressure and no obligation.
(Click here to see works cited)
- Hirvonen, J., Goodwin, R. S., Li, C-T., Terry, G. E., Zoghbi, S. S., Morse, C., Pike, V. W., Volkow, N. D., Huestis, M. A., & Innis, R. B. (2012). Reversible and regionally selective downregulation of brain cannabinoid CB1 receptors in chronic daily cannabis smokers. Molecular Psychiatry, 17(6), 642–649. https://doi.org/10.1038/mp.2011.82
- Gorelick, D. A., Levin, K. H., Copersino, M. L., Heishman, S. J., Liu, F., Boggs, D. L., & Kelly, D. L. (2012). Diagnostic criteria for cannabis withdrawal syndrome. Drug and Alcohol Dependence, 123(1-3), 141–147. https://doi.org/10.1016/j.drugalcdep.2011.11.007
- Connor, J. P., Stjepanović, D., Budney, A. J., Le Foll, B., & Hall, W. D. (2021). Clinical management of cannabis withdrawal. Addiction, 117(7), 2075–2095. https://doi.org/10.1111/add.15743
- GOV.UK. (2025, December 4). Adult substance misuse treatment statistics 2024 to 2025: report. GOV.UK. https://www.gov.uk/government/statistics/substance-misuse-treatment-for-adults-statistics-2024-to-2025/adult-substance-misuse-treatment-statistics-2024-to-2025-report


