VoltraMelatonin: does it help you sleep, and is it safe?
A little. In a 2013 meta-analysis of 19 studies, melatonin helped people fall asleep about 7 minutes faster and sleep about 8 minutes longer [1], and the American Academy of Sleep Medicine suggests doctors not use it for chronic insomnia in adults [3]. The evidence is better for jet lag [5]. Labels are often wrong [6] [7], children get into it [8], and its legal status varies: in Saudi Arabia, more than 2 mg a day or any medical claim makes it a registered health product [11].
Does it help you sleep?
Melatonin is a hormone your body makes; it rises in the dark and helps set the sleep cycle [17]. As a supplement, the effect is small. A 2013 meta-analysis of 19 studies with 1,683 people found it shortened the time to fall asleep by 7.06 minutes and lengthened sleep by 8.25 minutes on average, with slightly better sleep quality [1]; the study was partly funded through Eli Lilly research awards held by one of its authors [1]. A 2023 meta-analysis found the prolonged-release form cut the time to fall asleep by about 6 minutes, whether people reported it or it was measured [2].
The American Academy of Sleep Medicine's 2017 guideline suggests that "clinicians not use melatonin as a treatment for sleep onset or sleep maintenance insomnia" in adults [3]. It's a weak recommendation, based on trials of 2 mg, with very low quality evidence, and the improvement in sleep quality wasn't clinically significant [3].
In Europe, a 2 mg prolonged-release melatonin medicine, Circadin, is authorised on prescription for the short-term treatment of poor sleep in people aged 55 or over. The EMA says: "although Circadin has only been shown to have a small effect in a relatively small number of patients, its benefits are greater than its risks." [4]
Jet lag
The evidence is better here. In a Cochrane review of 10 trials, 8 found that melatonin taken close to bedtime at the destination reduced jet lag after flights crossing five or more time zones [5]. The review dates from 2002; a 2008 search found no new trials [5]. Saudi Arabia's Food and Drug Authority lists easing jet lag and shortening the time to fall asleep as its uses [17].
What's really in the bottle
- A Canadian study of about 30 products from 16 brands found melatonin content ranging from 83% below to 478% above the label, varying by up to 465% between batches of the same product; more than 71% of products weren't within 10% of the label, and 26% contained serotonin [6].
- A 2023 US study of 25 melatonin gummies found 1.3 to 13.1 mg per serving, 74% to 347% of the labelled amount; 22 of the 25 were inaccurately labelled, and one contained no melatonin at all, but CBD [7].
In the US, melatonin is sold as a dietary supplement, so it isn't approved by the FDA the way medicines are [7] [16].
Children
US poison centres received 260,435 reports of children swallowing melatonin from 2012 to 2021, rising 530%, from 8,337 in 2012 to 52,563 in 2021 [8]. Most were accidental (94.3%) [8]. Of the 27,795 children seen at a health facility, 4,097 were admitted to hospital and 287 needed intensive care; five needed mechanical ventilation, and two, both under 2, died [8]. Gummies were the most common form in emergency visits by children aged 5 and under [9]. The American Academy of Sleep Medicine advises treating melatonin like any medicine: keep it out of children's reach, and talk to a paediatric professional before giving it [10].
Where it's legal, and how
| Where | Melatonin's status |
|---|---|
| Saudi Arabia | Up to 2 mg a day counts as food (a supplement); more, or with medical claims, it's a registered health product [11] |
| UAE | Most of the 70 directory entries are sold in pharmacies without a prescription; 3 need one [14] |
| UK | Prescription only [15] |
| EU | Circadin is prescription-only; for foods, the rules differ by country [4] [18] |
| US | A dietary supplement, sold over the counter [8] |
In Saudi Arabia, the SFDA's classification guidance lists "Melatonin that is in concentrations equal to or lower than 2 mg/d" under food, and "Products containing melatonin with medical claims or in concentrations more than 2 mg/day" under health products [11]. Products of 3 mg and 5 mg appear on its herbal medicines and vitamins list [12]; its list of registered drugs showed no melatonin product [13]. In the EU, food health claims for melatonin require at least 0.5 or 1 mg a portion, while several member states treat it as a medicine depending on the daily dose [18]. In the UK, the NHS says melatonin supplements "are not authorised for sale in the UK and it's a prescription-only medicine." [15] We couldn't find Kuwait's rules.
Side effects and medicines
The SFDA lists headache, nausea and dizziness among the possible risks of using too much melatonin, and because it can interact with some medicines, including blood pressure and diabetes medicines and contraceptive pills, it recommends taking it under medical supervision [17]. Nothing here is dosing advice.
Before you reach for it
Melatonin helps a few minutes at best. Sleep habits and enough hours matter more: our guide to how many hours of sleep you need covers the targets and the Saudi health ministry's sleep tips, and our magnesium guide covers the other popular sleep supplement.
In Voltra
Voltra reads your sleep from Apple Health when a device such as an Apple Watch records it: tap the Sleep card on Home to see last night and your last 7, 14 or 30 nights against an 8-hour goal line. If you take melatonin, you can log it in the Eat tab by searching for it or describing it.
Frequently asked
Does melatonin help you sleep?
A little: in a 2013 meta-analysis, people fell asleep about 7 minutes faster and slept about 8 minutes longer. The American Academy of Sleep Medicine suggests not using it for chronic insomnia in adults.
Is melatonin legal in Saudi Arabia and the UAE?
In Saudi Arabia, up to 2 mg a day can be sold as a food supplement; above that, or with medical claims, it's a registered health product. In the UAE, most melatonin products are sold only in pharmacies, and a few need a prescription.
Is melatonin safe for children?
US poison centres saw child melatonin cases rise 530% from 2012 to 2021, and two young children died. Keep it out of reach, and talk to a paediatrician before giving it.
Does melatonin work for jet lag?
Better than for insomnia: in a Cochrane review, 8 of 10 trials found it reduced jet lag after flights crossing five or more time zones.
Sources
- Ferracioli-Oda E, Qawasmi A, Bloch MH (2013). Meta-analysis: melatonin for the treatment of primary sleep disorders. PLoS One 8(5):e63773. Abstract; funding statement.
- Maruani J, Reynaud E, Chambe J, et al. (2023). Efficacy of melatonin and ramelteon for the acute and long-term management of insomnia disorder in adults: a systematic review and meta-analysis. J Sleep Res. Abstract.
- Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL (American Academy of Sleep Medicine) (2017). Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults. J Clin Sleep Med 13(2):307–349. Recommendation 12.
- European Medicines Agency (2007). Circadin (melatonin): EPAR overview. Overview.
- Herxheimer A, Petrie KJ (2002). Melatonin for the prevention and treatment of jet lag. Cochrane Database Syst Rev CD001520. Abstract. Published 2002; a 2008 search found no new studies.
- Erland LAE, Saxena PK (2017). Melatonin natural health products and supplements: presence of serotonin and significant variability of melatonin content. J Clin Sleep Med 13(2):275–281. Abstract.
- Cohen PA, Avula B, Wang YH, Katragunta K, Khan I (2023). Quantity of melatonin and CBD in melatonin gummies sold in the US. JAMA 329(16):1401–1402. Results.
- Lelak K, Vohra V, Neuman MI, Toce MS, Sethuraman U (US CDC) (2022). Pediatric melatonin ingestions: United States, 2012–2021. MMWR 71(22):725–729. Results, p. 726; summary box.
- Freeman DI, Lind JN, Weidle NJ, et al. (US CDC) (2024). Emergency department visits for unsupervised pediatric melatonin ingestion: United States, 2019–2022. MMWR. Results.
- American Academy of Sleep Medicine (2022). Health advisory: melatonin use in children and adolescents. Adopted 9 September 2022.
- Saudi Food and Drug Authority (2024). Products Classification Guidance, version 8.0. Food item 3.26 and health products list.
- Saudi Food and Drug Authority (2026). Herbal drugs and vitamins list (search: melatonin). Searched 30 September 2026.
- Saudi Food and Drug Authority (2026). Drugs list (search: melatonin). No results for melatonin, searched 30 September 2026.
- Emirates Drug Establishment (2026). Registered medical product directory (ingredient: melatonin). Data refreshed 30 September 2026; some entries are duplicates.
- NHS (2023). About melatonin; Common questions about melatonin. Last reviewed 13 February 2023.
- National Center for Complementary and Integrative Health (2024). Melatonin: what you need to know. Last updated May 2024.
- الهيئة العامة للغذاء والدواء (٢٠٢٢). الميلاتونين (منشور وإنفوجراف على منصة X). In Arabic. Post and infographic, 12 May 2022.
- Heads of Food Safety Agencies working group on food supplements (published by BVL) (2024). First report of the HoA working group 'Food Supplements'. Annex C, melatonin, p. 46.
Sources checked on 30 September 2026.
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