Melatonin

Melatonin is a naturally occurring hormone produced by your brain. It helps regulate your internal body clock, also known as your circadian rhythm. Levels of melatonin naturally rise in the evening as it gets dark, signalling to your body that it is time to sleep. Levels then fall in the morning as light triggers your brain to stop production, making you feel alert. Melatonin 2mg tablets contain a synthetic version of this hormone. They are a prescription‑only medicine indicated for the short‑term treatment of primary insomnia – meaning persistent difficulty getting to sleep or staying asleep, or poor quality sleep, that does not have any identified medical, mental or environmental cause. It is specifically licensed for adults aged 55 years and older because natural melatonin production tends to decrease with age. If you are under 55, a doctor may still prescribe it “off‑label” if they feel it is appropriate for your situation. As well as insomnia, melatonin can also be prescribed for the short‑term treatment of jet lag in adults.

Melatonin tablets work by artificially raising the levels of melatonin in your body, mimicking the natural increase that happens in the evening. By doing this, they help to reset or reinforce your internal body clock. This helps you to: fall asleep more quickly; improve the quality of your sleep; reduce the chances of waking during the night; and feel more alert during the day after a good night's rest. The 2mg tablet is a prolonged‑release (or modified‑release) formulation, meaning it does not release all the melatonin at once. Instead, it releases the medicine gradually into your body over several hours. This is particularly useful for people who have difficulty staying asleep throughout the night, as it helps maintain sleep for longer.

To get the best results, you must take melatonin exactly as directed. Dosage: The recommended dose is one 2mg tablet once a day. Take the tablet 1–2 hours before you plan to go to bed and after food. It is best to take it at the same time each evening. Swallow the tablet whole with a glass of water – do not crush or chew the tablet, as this will damage the special prolonged‑release coating and prevent it from working properly. It can be used for up to thirteen weeks. You should not use it for longer than this without speaking to your doctor. What if you forget to take a dose? If you forget to take your tablet, take it as soon as you remember before you go to sleep. If you do not remember until the next morning, just skip the missed dose and take your next tablet as usual in the evening. Do not take a double dose to make up for a forgotten one. What if you stop taking it? There are no known withdrawal effects if treatment is stopped, even if you stop suddenly.

The cost of a course of treatment depends on how many tablets you need and where you buy them. A pack of 30 melatonin 2mg prolonged‑release tablets is typically priced between £39.00 and £42.99. Some services offer prices from as low as £21.99, and a single tablet may cost as little as £1.00 when bought in larger quantities or through certain providers. Melatonin is a prescription‑only medicine (POM) in the UK, which means you cannot simply buy it over the counter or from a supermarket. You must have a consultation with a doctor or pharmacist first. The process is simple and confidential: you complete a short online consultation form answering questions about your health and medical history; a UK‑registered doctor or pharmacist reviews your answers to ensure melatonin is safe for you; and if approved, a prescription is issued and your medication is dispatched. The price you see with most regulated services includes both the consultation fee and the medicine, so there are no hidden extras.

Once you have completed the online consultation and it has been approved, delivery is very fast. Most online pharmacies offer melatonin next day delivery as a standard service. If your order is approved before the daily cut‑off time (usually mid‑afternoon), it will be dispatched the same day. Your medication will then arrive the next day via a tracked courier service such as Royal Mail Tracked 24. Delivery is often free on orders over a certain amount. The packaging is always discreet – plain and unmarked – so no one else knows what is inside. Once dispatched, you will receive tracking details to follow your parcel's progress to your door.

Like all medicines, melatonin can cause side effects, although not everyone gets them. Most side effects are mild to moderate and short‑lasting. Common side effects (may affect up to 1 in 10 people): headache, dizziness, irritability, nervousness, restlessness, anxiety, abnormal dreams or nightmares, insomnia, nausea, indigestion, dry mouth, high blood pressure, back pain, pain in your arms or legs, fatigue (tiredness), lack of energy, and weight increase. Serious side effects – stop taking the medicine and contact your doctor immediately if you experience: chest pain or angina; loss of consciousness or fainting; feeling your heartbeat (palpitations); visual impairment or blurred vision; or a painful erection lasting more than 4 hours (priapism) – seek emergency medical attention for this. Melatonin can cause drowsiness. You should be careful if you feel sleepy, as it may affect your ability to drive or operate machinery.

Do not take melatonin if any of the following apply to you: you are allergic to melatonin or any of the other ingredients in the tablet; you have liver disease (its use is not recommended due to lack of safety data); you have an autoimmune disease (its use is not recommended due to a lack of clinical data); you have been told you have an intolerance to some sugars (the tablets contain lactose); or you are under 18 years of age unless specifically prescribed by a specialist for conditions like ADHD. Melatonin is not recommended for children or adolescents aged 0 to 18 years for the treatment of primary insomnia, as its safety and efficacy in this age group have not been established.

Yes, melatonin can interact with some other medicines. You should always tell your doctor or pharmacist about any other medicines you are taking, including those bought without a prescription. Important interactions include: fluvoxamine (an antidepressant) – this can increase melatonin levels in your blood by up to 17 times, which can make side effects much more severe; other antidepressants (such as citalopram), sleeping tablets (such as zolpidem), and epilepsy medicines, which may interact with melatonin; caffeine, which can reduce melatonin levels; alcohol, which can reduce the effect of melatonin on sleep; and smoking (tobacco), which can make melatonin less effective, as components of tobacco smoke increase the breakdown of melatonin in the liver. If you are taking warfarin or other blood‑thinning medicines, you should speak to your doctor before taking melatonin.

There is limited safety data on the use of melatonin during pregnancy and breastfeeding. Melatonin passes into breast milk, and a risk to the breast‑fed child cannot be excluded. Melatonin is not recommended during pregnancy or while breastfeeding. If you are pregnant, planning to become pregnant, or are breastfeeding, speak to your doctor before taking this medicine.

Store below 25°C (room temperature) in a dry place, away from direct sunlight and heat. Keep the blister pack in its outer carton to protect it from light and moisture. Keep the medicine out of the sight and reach of children. Do not use the tablets after the expiry date printed on the packaging. If you have any leftover tablets, do not throw them away in household waste or pour them down the sink. Take them to your local pharmacy, where they will be disposed of safely.