Melatonin Addiction: The Causes, Symptoms and Side Effects
Melatonin is often marketed as a natural and harmless sleep aid, available over the counter in pharmacies, health stores and online. With sleep issues on the rise, its use has surged across the UK. But despite its reputation for being safe, it is possible to become dependent on melatonin, leading to serious risks and withdrawal symptoms. Understanding how melatonin works, and what it means if you can’t stop using it, is key to recognising and preventing potential addiction.
What is melatonin?
Melatonin is a hormone that our bodies make naturally, mainly in a small part of our brains called the pineal gland. Melatonin’s main job is to help control your sleep-wake cycle by helping you feel sleepy at night and more awake during the day. When the sun goes down and it gets dark, your brain makes more melatonin, which signals to your body that it’s time to get some rest. In the morning, when light hits your eyes, melatonin production drops, helping you feel ready to wake up and start the day.
In the UK, melatonin is available as a prescription medicine, usually given to people who have trouble sleeping or who work night shifts, deal with jet lag or have certain health conditions that affect their sleep patterns. Melatonin supplements are also sold online or bought from other countries, even though these versions are technically unregulated in the UK.
Melatonin is generally considered safe for short-term use and for certain medical reasons but there are still melatonin side effects that affect some people, including:
- Feeling groggy or drowsy the next day
- Headaches
- Stomach pain
- Dizziness
- Strange dreams
Melatonin can also interact with other medicines and it is not recommended for most children, pregnant women or people with certain medical conditions.
What is melatonin addiction?
Melatonin addiction isn’t quite like addiction to strong sleeping pills or drugs, but it is still a real problem for some people. Because melatonin products are described as “natural” and it’s a hormone your body already makes, a lot of people assume you can’t become addicted. In reality, however, it is possible to become both emotionally and psychologically dependent on melatonin. Dependency usually builds up slowly, with you taking melatonin just for a few nights. This may be after a stressful week or while travelling, but if you don’t get out of the habit of taking melatonin, it can become a nightly routine. .
Unlike with other types of sleeping pill addiction, physical withdrawal symptoms from melatonin are rare. However, you can start worrying about not being able to sleep without melatonin or, if sleep problems get worse when you try to stop, convince yourself that you need it. Eventually, you may even start taking melatonin through the day, becoming completely reliant on it 24/7.
How to spot telltale melatonin addiction symptoms?
Spotting melatonin addiction symptoms isn’t always easy, mostly because the risks are often underestimated. However, if you find yourself getting anxious about sleep or feeling like you can’t cope without your nightly dose, here are a few red flags to look out for:
- You can’t get to sleep without taking melatonin, even if you’ve only been using it for a short time.
- You’re constantly upping your melatonin dosage, hoping it will work better than before.
- You feel stressed or panicky if you run out of melatonin or can’t take it one night.
- You spend a lot of time planning when and how to take your melatonin or worry all day about not being able to take it.
- You have stopped trying other ways to improve your sleep.
- Friends or family have noticed and commented on your melatonin use.
If you are worried about your use of melatonin or if it’s starting to feel like a crutch, it’s a good idea to look at options for sleeping pill addiction treatment.
Melatonin factsheet
- Melatonin is classified as a 'prescription-only medicine' under the Human Medicines Regulations 2012. It is illegal to sell or supply melatonin without a prescription.
- In the UK, the only licensed melatonin product for adults is Circadin, prescribed for short-term treatment of primary insomnia in people aged 55 or over.
- However, melatonin prescriptions for children increased by 245% between 2015/16 and 2024/25.
- The UK government has issued warnings against online melatonin sales as supplements bought online or abroad are not regulated for quality, strength or purity and may contain other ingredients.
- No deaths from melatonin alone have been recorded in the UK. However, there are increasing calls for monitoring due to possible side effects, accidental melatonin overdose (especially in children) and risks when combining melatonin and alcohol or other drugs.
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Start the Melatonin Rehabilitation Process Today
Finding the best addiction treatment is vital for long-term recovery success. Our friendly and compassionate team will hold your hand through the process until you learn to love yourself again.
What factors can increase your melatonin addiction potential?
There are a few things that might make someone more likely to develop a prescription drug addiction to melatonin. It is important that both users and their prescribers are aware of these risk factors:
Taking melatonin every night for a long time
If you use melatonin night after night, your body and mind can start to believe you can’t sleep without it. This dependency is the first step towards melatonin addiction.
Self-medicating instead of seeking help
Some people rely solely on melatonin instead of getting professional support for stress, mental health issues or ongoing sleep problems. It is important that you also look at other ways to improve your mental health or sleep, like meditation, better bedroom habits, therapy and medical treatment.
Easy access to melatonin
If melatonin is widely available, it is easier to keep taking more than you need without a doctor’s guidance and become addicted.
A stressful life
Big life changes, ongoing stress or difficult relationships or careers can all make you want to keep using melatonin to get some much-needed peace.
What are the dangers of melatonin abuse and addiction?
Unsupervised melatonin abuse and a spiralling addiction can be very dangerous, with some of the biggest risks including:
Sleep disruption
Taking too much melatonin or using it at odd times can mess with your natural body clock, making it even harder to get good sleep.
Daytime drowsiness
If melatonin lingers in your system, you may feel groggy, tired or even dizzy the next day. This can make it hard to focus or stay alert at work or school and can also put you at risk of accidents.
Mental and emotional issues
Overusing melatonin has been linked with feelings of irritability, depression and anxiety, especially in people with existing mental health challenges.
Hormonal imbalances
Melatonin can affect other hormones in your body, especially if you’re using high doses for a long period. This may cause changes to your menstrual cycle or impact puberty in teenagers.
Spiralling personal issues
Relying on melatonin to sleep every night often means missing out on treating the real reasons you can’t sleep, like stress, depression or another underlying health condition.
Finding help if you have a melatonin addiction
If you feel like melatonin is starting to take over your life, you don’t have to handle it alone. At Providence Projects, we’re here to help you get your sleep and your wellbeing back on track with our melatonin addiction treatment programmes. As is the case with all of our prescription drug rehab treatment programmes, we follow our distinct treatment pathway that ensures you will have access to the support you need, for as long as you need it.
Contact us today to see what we can do for you.
Reach out to our expert support team 24 hours a day
Start the Melatonin Rehabilitation Process Today
Finding the best addiction treatment is vital for long-term recovery success. Our friendly and compassionate team will hold your hand through the process until you learn to love yourself again.
Frequently Asked Questions
Can you overdose on melatonin?
Yes, it is possible to have a melatonin overdose, especially if you take much more than the recommended dose. While melatonin is considered safer than many sleeping pills, too much can still make you feel sick, groggy or cause headaches, nausea and even changes in blood pressure. If you or someone you know has taken a large amount of melatonin and is experiencing severe drowsiness, confusion or trouble breathing, get medical help right away.
How long does melatonin stay in your system?
Melatonin will usually be out of your system by the time you wake up. It works fast, kicking in about 30 minutes after you take it and wearing off over the next four to eight hours. However, if you notice you’re still feeling sleepy in the morning, you might want to try a lower melatonin dosage or talk to your doctor.
Is zolpidem stronger than melatonin?
Yes, zolpidem, sold under the brand name Ambien, is much stronger than melatonin. Zolpidem is a prescription sleeping pill designed to make you fall asleep fast and stay asleep, while melatonin is a natural hormone that gently helps reset your sleep cycle. Because zolpidem is more powerful, it also comes with higher risks of side effects, addiction and possible overdose.
(Click here to see works cited)
- Benisek, Alexandra. “Melatonin Overdose – Sleep Disorders.” WebMD, 22 June 2024, https://www.webmd.com/sleep-disorders/melatonin-overdose – Accessed 29 July 2025.
- Connelly, Dawn. “Melatonin prescribing in children rises by 245% in nine years, data show.” The Pharmaceutical Journal, 17 1 2025, https://pharmaceutical-journal.com/article/news/melatonin-prescribing-in-children-rises-245-in-nine-years-data-show – Accessed 29 7 2025.
- NHS. “Melatonin: a hormone used for sleep problems.” NHS, https://www.nhs.uk/medicines/melatonin/ – Accessed 29 July 2025.
- Chua, Hui Ming et al. “Dissolution of Intact, Divided and Crushed Circadin Tablets: Prolonged vs. Immediate Release of Melatonin.” Pharmaceutics vol. 8,1 2. 7 Jan. 2016, doi:10.3390/pharmaceutics8010002