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Comprimés de mélatonine pour l'insomnie

Adaflex, Circadin

Melatonin is useful in helping to promote sleep in people over the age of 55 years who have difficulty sleeping. It also helps to promote sleep in children with learning difficulties such as Autism Spectrum Disorder (ASD) and ADHD.

Take one 2 mg tablet 1-2 hours before bedtime, with a snack.

Melatonin will make you feel sleepy, so do not drive and do not use tools or machines until this effect has worn off.

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About melatonin

Type de médicament

Hypnotique (somnifère)

Utilisé pour

Mauvais sommeil

Également appelé

Adaflex®; Ceyesto®; Circadin®; Civasta®; Slenyto®; Syncrodin®

Disponible en

Modified-release tablets, tablets, capsules and oral liquid medicine

Poor sleep can mean that you have difficulty getting to sleep, or that you wake up for long periods during the night, or that you wake early, or that you do not feel refreshed in the mornings.

Insomnia is a fairly common condition, but it does not usually last for long. Melatonin is a hormone which occurs naturally in the body and is associated with the control of the body's sleep pattern. As we grow older the amount of naturally occurring melatonin in the body reduces. Taking melatonin adds to the body's natural supply and helps to promote and improve the quality of sleep.

Circadin® and Civasta® tablets are prescribed for people over the age of 55 years who have insomnia, or difficulty sleeping.

Slenyto® tablets are prescribed for poor sleep in children between the ages of 2 years and 18 years with Autism Spectrum Disorder (ASD) or Smith-Magenis syndrome.

Adaflex® and Ceyesto® tablets are prescribed for poor sleep in children aged 6 to 17 years with ADHD. They can also be prescribed for adults who experience jet lag.

Syncrodin® tablets are prescribed for adults who experience jet lag.

Sometimes a doctor may prescribe melatonin for other groups of people with sleeping problems. If this is the case for you, the way you take melatonin and your dose may be different from the information in this leaflet. Follow your doctor's instructions carefully and ask your doctor or pharmacist if you are unsure of anything.

Before taking melatonin

Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking melatonin it is important that your doctor or pharmacist knows:

  • Si vous avez des problèmes de fonctionnement du foie ou des reins.

  • If you have an autoimmune disease - a condition in which the body is attacked by its own overactive immune system. It includes conditions such as rheumatoid arthritis, multiple sclerosis, and lupus.

  • Si vous prenez d'autres médicaments. Cela inclut tous les médicaments que vous prenez et qui sont disponibles sans ordonnance, ainsi que les médicaments à base de plantes et les médicaments complémentaires.

  • Si vous avez déjà eu une réaction allergique à un médicament.

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How to take melatonin

  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about melatonin and will provide you with a full list of the side-effects which you may experience from taking it.

  • Take melatonin exactly as your doctor tells you to. For adults the dose is usually one 2 mg tablet daily, taken 1-2 hours before bedtime. For children with ASD the usual starting dose is 2 mg taken 30 minutes to one hour before bedtime. Your child's doctor may increase the dose slowly to get a better response.

  • Take the tablet with a snack or after eating some food. This will help the medicine to work later into the night. Swallow the tablet whole - do not break or crush the tablet because it is designed to release melatonin slowly over a few hours.

  • If you forget to take a tablet at the usual time but you remember before you go to sleep, take it when you remember. If you do not remember until the following day, just take the next dose as usual. Do not take two doses together to make up for a forgotten dose.

Tirer le meilleur parti de votre traitement

  • Do not take melatonin for longer than your doctor advises. It can be prescribed for up to 13 weeks for adults over 55.

  • Do not drink alcohol while you are taking melatonin because it will reduce the medicine's effectiveness in helping you to sleep.

  • Try to keep your regular appointments with your doctor. This is so your progress can be monitored.

  • There are some general recommendations that may help promote good sleep. Try to reduce the amount of caffeine you drink, especially in the afternoon and evening. Try to avoid eating heavy meals or drinking alcohol before bedtime. Exercise early in the day, rather than in the evening.

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Can melatonin cause problems?

Along with their useful effects, most medicines can cause unwanted side-effects but not everyone experiences them. The table below contains some of the side-effects associated with melatonin. Children may be more likely than adults to experience these side-effects. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.

Melatonin side-effects (these affect fewer than 1 in 10 people)

Que puis-je faire si je suis confronté à cette situation ?

Feeling tired or sleepy

Do not drive and do not use tools or machines until these effects have worn off

Maux de tête

Buvez beaucoup d'eau et demandez à un pharmacien de vous recommander un analgésique adapté. Si les maux de tête persistent, prévenez votre médecin

Indigestion, feeling sick (nausea), stomach ache

S'en tenir à des aliments simples - éviter les repas riches ou épicés

Feeling irritable or restless, mood swings, dry mouth, abnormal dreams, night sweats, dry or itchy skin, pains in the arms or legs

Si l'un d'entre eux devient gênant, parlez-en à votre médecin.

If you experience any other symptoms which you think may be due to the tablets, speak with your doctor or pharmacist for further advice. Children with ASD may be more likely to experience mood swings, irritability or aggression when taking melatonin.

How to store melatonin

  • Conservez tous les médicaments hors de la portée et de la vue des enfants.

  • Conserver dans un endroit frais et sec, à l'abri de la chaleur et de la lumière directes.

Informations importantes sur tous les médicaments

Informations importantes sur tous les médicaments

Ne dépassez jamais la dose prescrite. Si vous pensez que vous ou quelqu'un d'autre avez pris une dose excessive de ce médicament, rendez-vous immédiatement au service des accidents et des urgences de votre hôpital local. Emportez la boîte avec vous, même si elle est vide.

Ce médicament est pour vous. Ne le donnez jamais à d'autres personnes, même si leur état semble être le même que le vôtre.

Si vous devez subir une opération ou un traitement dentaire, indiquez toujours à la personne chargée du traitement les médicaments que vous prenez.

Si vous achetez des médicaments, vérifiez auprès d'un pharmacien qu'ils peuvent être pris en même temps que vos autres médicaments.

Ne gardez pas les médicaments périmés ou dont vous ne voulez plus. Apportez-les à votre pharmacie locale qui les éliminera pour vous.

Si vous avez des questions sur ce médicament, demandez à votre pharmacien.

Signaler les effets secondaires d'un médicament ou d'un vaccin

Si vous ressentez des effets secondaires, vous pouvez les signaler en ligne sur le site web de la carte jaune.

Autres lectures et références

Historique de l'article

Les informations contenues dans cette page sont rédigées et évaluées par des cliniciens qualifiés.

  • Prochaine révision prévue : 29 août 2026
  • 30 Aug 2023 | Dernière version

    Dernière mise à jour par

    Michael Stewart, MRPharmS

    Examiné par des pairs

    Sid Dajani
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