🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 75 (from laksa117)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa075.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.nhs.uk/medicines/melatonin/side-effects-of-melatonin/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.nhs.uk/medicines/melatonin/side-effects-of-melatonin/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.nhs.uk\/medicines\/melatonin\/side-effects-of-melatonin\/","crawl_time":1776179698,"first_indexed_time":1677162535,"http_code":200,"src_unparsed":"uk,nhs,www!\/medicines\/melatonin\/side-effects-of-melatonin\/ s443","src_root_hash":"11359509702434384875","history_drop_reason":null,"meta_title":"Side effects of melatonin - NHS","meta_descriptions":["NHS medicines information on side effects of melatonin and what you can do to cope."],"attrs_boilerpipe_text":"Side effects of melatonin\n-\nBrand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin\nLike all medicines, melatonin can cause side effects, but most people will not have any side effects.\nCommon side effects\nMelatonin does not have many common side effects but there are things you can do to help cope with them:\nFeeling sleepy or tired in the daytime\nDo not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired.\nIf you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you.\nHeadache\nMake sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller.\nTalk to a doctor if headaches last longer than a week or are severe.\nStomach ache\nTry putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe.\nFeeling sick (nausea)\nTake melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals.\nFeeling dizzy\nIf taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse.\nFeeling irritable or restless\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\nDry mouth\nChew sugar-free gum or suck sugar-free sweets.\nDry or itchy skin\nApply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin.\nIf this does not get better after 1 week, stop taking the medicine and talk to your doctor.\nPains in your arms or legs\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\nStrange dreams or night sweats\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\nSpeak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away.\nSerious side effects\nSerious side effects are rare and happen to less than 1 in 1,000 people.\nSpeak to your doctor if you start feeling low or sad as this could be a sign of depression.\nCall your doctor or call 111 now if you:\nget changes to your eyesight, such as blurred vision\nfeel faint or pass out\nstart feeling confused or dizzy, or things seem to be spinning around you (\nvertigo\n)\nhave any bleeding that does not stop, unexplained bruising or blood in your urine\nSerious allergic reaction\nIn rare cases, it's possible to have a serious allergic reaction (\nanaphylaxis\n) to melatonin.\nImmediate action required:\nCall 999 now if:\nyour lips, mouth, throat or tongue suddenly become swollen\nyou're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air)\nyour throat feels tight or you're struggling to swallow\nyour skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)\nyou suddenly become very confused, drowsy or dizzy\nsomeone faints and cannot be woken up\na child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face)\nYou or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling.\nThese can be signs of a serious allergic reaction and may need immediate treatment in hospital.\nInformation:\nDo not drive yourself to A&E.\nThe person you speak to at 999 will give you advice about what to do.\nOther side effects\nThese are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet.\nInformation:\nReporting side effects\nYou can report any suspected side effect using the Yellow Card safety scheme.\nVisit the Yellow Card website for more information about reporting side effects\n.","attrs_markdown":"\n\n[Skip to main content](https:\/\/www.nhs.uk\/medicines\/melatonin\/side-effects-of-melatonin\/#maincontent)\n\n- [Health A to Z](https:\/\/www.nhs.uk\/health-a-to-z\/)\n- [NHS services](https:\/\/www.nhs.uk\/nhs-services\/)\n- [Healthy living](https:\/\/www.nhs.uk\/live-well\/)\n- [Mental health](https:\/\/www.nhs.uk\/mental-health\/)\n- [Care and support](https:\/\/www.nhs.uk\/social-care-and-support\/)\n- [Home](https:\/\/www.nhs.uk\/)\n- Browse More\n\n1. [Home](https:\/\/www.nhs.uk\/)\n2. [Health A to Z](https:\/\/www.nhs.uk\/health-a-to-z\/)\n3. [Medicines A to Z](https:\/\/www.nhs.uk\/medicines\/)\n4. [Melatonin](https:\/\/www.nhs.uk\/medicines\/melatonin\/)\n\n[Back to Melatonin](https:\/\/www.nhs.uk\/medicines\/melatonin\/)\n\n# Side effects of melatonin  - Brand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin\nLike all medicines, melatonin can cause side effects, but most people will not have any side effects.\n\n## Common side effects\nMelatonin does not have many common side effects but there are things you can do to help cope with them:\n\nFeeling sleepy or tired in the daytime\n\nDo not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired.\n\nIf you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you.\n\nHeadache\n\nMake sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller.\n\nTalk to a doctor if headaches last longer than a week or are severe.\n\nStomach ache\n\nTry putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe.\n\nFeeling sick (nausea)\n\nTake melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals.\n\nFeeling dizzy\n\nIf taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse.\n\nFeeling irritable or restless\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nDry mouth\n\nChew sugar-free gum or suck sugar-free sweets.\n\nDry or itchy skin\n\nApply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin.\n\nIf this does not get better after 1 week, stop taking the medicine and talk to your doctor.\n\nPains in your arms or legs\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nStrange dreams or night sweats\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nSpeak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away.\n\n## Serious side effects\nSerious side effects are rare and happen to less than 1 in 1,000 people.\n\nSpeak to your doctor if you start feeling low or sad as this could be a sign of depression.\n\nCall your doctor or call 111 now if you:\n\n- get changes to your eyesight, such as blurred vision\n- feel faint or pass out\n- start feeling confused or dizzy, or things seem to be spinning around you ([vertigo](https:\/\/www.nhs.uk\/conditions\/vertigo\/))\n- have any bleeding that does not stop, unexplained bruising or blood in your urine\n### Serious allergic reaction\nIn rare cases, it's possible to have a serious allergic reaction ([anaphylaxis](https:\/\/www.nhs.uk\/conditions\/anaphylaxis\/)) to melatonin.\n\n#### Immediate action required: Call 999 now if:\n- your lips, mouth, throat or tongue suddenly become swollen\n- you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air)\n- your throat feels tight or you're struggling to swallow\n- your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)\n- you suddenly become very confused, drowsy or dizzy\n- someone faints and cannot be woken up\n- a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face)\n\nYou or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling.\n\nThese can be signs of a serious allergic reaction and may need immediate treatment in hospital.\n\nInformation:\n\nDo not drive yourself to A\\&E.\n\nThe person you speak to at 999 will give you advice about what to do.\n## Other side effects\nThese are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet.\n\nInformation:\n\n## Reporting side effects\nYou can report any suspected side effect using the Yellow Card safety scheme.\n\n[Visit the Yellow Card website for more information about reporting side effects](https:\/\/yellowcard.mhra.gov.uk\/).\n\n## More in [Melatonin](https:\/\/www.nhs.uk\/medicines\/melatonin\/)\n- [About melatonin](https:\/\/www.nhs.uk\/medicines\/melatonin\/about-melatonin\/)\n- [Who can and cannot take it](https:\/\/www.nhs.uk\/medicines\/melatonin\/who-can-and-cannot-take-melatonin\/)\n- [How and when to take it](https:\/\/www.nhs.uk\/medicines\/melatonin\/how-and-when-to-take-melatonin\/)\n- Side effects\n- [Pregnancy, breastfeeding and fertility](https:\/\/www.nhs.uk\/medicines\/melatonin\/pregnancy-breastfeeding-and-fertility-while-taking-melatonin\/)\n- [Taking it with other medicines and herbal supplements](https:\/\/www.nhs.uk\/medicines\/melatonin\/taking-melatonin-with-other-medicines-and-herbal-supplements\/)\n- [Common questions](https:\/\/www.nhs.uk\/medicines\/melatonin\/common-questions-about-melatonin\/)\n\nPage last reviewed: 13 February 2023   \n Next review due: 13 February 2026\n\n## Support links\n- [Home](https:\/\/www.nhs.uk\/)\n- [Health A to Z](https:\/\/www.nhs.uk\/health-a-to-z\/)\n- [NHS services](https:\/\/www.nhs.uk\/nhs-services\/)\n- [Healthy living](https:\/\/www.nhs.uk\/live-well\/)\n- [Mental health](https:\/\/www.nhs.uk\/mental-health\/)\n- [Care and support](https:\/\/www.nhs.uk\/social-care-and-support\/)\n- [COVID-19](https:\/\/www.nhs.uk\/conditions\/covid-19\/)\n\n- [NHS App](https:\/\/www.nhs.uk\/nhs-app\/)\n- [Find my NHS number](https:\/\/www.nhs.uk\/nhs-services\/online-services\/find-nhs-number\/)\n- [View your GP health record](https:\/\/www.nhs.uk\/nhs-services\/gps\/view-your-gp-health-record\/)\n- [View your test results](https:\/\/www.nhs.uk\/nhs-services\/online-services\/view-your-test-results\/)\n- [About the NHS](https:\/\/www.nhs.uk\/using-the-nhs\/about-the-nhs\/)\n- [Healthcare abroad](https:\/\/www.nhs.uk\/using-the-nhs\/healthcare-abroad\/)\n\n- [Other NHS websites](https:\/\/www.nhs.uk\/nhs-sites\/)\n- [Profile editor login](https:\/\/www.nhs.uk\/our-policies\/profile-editor-login\/)\n\n- [About us](https:\/\/www.nhs.uk\/about-us\/)\n- [Report an issue with the NHS website](https:\/\/www.nhs.uk\/report-an-issue-with-the-nhs-website)\n- [Accessibility statement](https:\/\/www.nhs.uk\/accessibility-statement\/)\n- [Our policies](https:\/\/www.nhs.uk\/our-policies\/)\n- [Cookies](https:\/\/www.nhs.uk\/our-policies\/choose-your-cookie-settings\/)\n\n© Crown copyright","attrs_readable_markdown":"Side effects of melatonin  - Brand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin\n\nLike all medicines, melatonin can cause side effects, but most people will not have any side effects.\n\n## Common side effects\nMelatonin does not have many common side effects but there are things you can do to help cope with them:\n\nFeeling sleepy or tired in the daytime\n\nDo not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired.\n\nIf you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you.\n\nHeadache\n\nMake sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller.\n\nTalk to a doctor if headaches last longer than a week or are severe.\n\nStomach ache\n\nTry putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe.\n\nFeeling sick (nausea)\n\nTake melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals.\n\nFeeling dizzy\n\nIf taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse.\n\nFeeling irritable or restless\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nDry mouth\n\nChew sugar-free gum or suck sugar-free sweets.\n\nDry or itchy skin\n\nApply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin.\n\nIf this does not get better after 1 week, stop taking the medicine and talk to your doctor.\n\nPains in your arms or legs\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nStrange dreams or night sweats\n\nIf this does not get better after a few days, stop taking the medicine and talk to your doctor.\n\nSpeak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away.\n\n## Serious side effects\nSerious side effects are rare and happen to less than 1 in 1,000 people.\n\nSpeak to your doctor if you start feeling low or sad as this could be a sign of depression.\n\nCall your doctor or call 111 now if you:\n\n- get changes to your eyesight, such as blurred vision\n- feel faint or pass out\n- start feeling confused or dizzy, or things seem to be spinning around you ([vertigo](https:\/\/www.nhs.uk\/conditions\/vertigo\/))\n- have any bleeding that does not stop, unexplained bruising or blood in your urine\n### Serious allergic reaction\nIn rare cases, it's possible to have a serious allergic reaction ([anaphylaxis](https:\/\/www.nhs.uk\/conditions\/anaphylaxis\/)) to melatonin.\n\n#### Immediate action required: Call 999 now if:\n- your lips, mouth, throat or tongue suddenly become swollen\n- you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air)\n- your throat feels tight or you're struggling to swallow\n- your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)\n- you suddenly become very confused, drowsy or dizzy\n- someone faints and cannot be woken up\n- a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face)\n\nYou or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling.\n\nThese can be signs of a serious allergic reaction and may need immediate treatment in hospital.\n\nInformation:\n\nDo not drive yourself to A\\&E.\n\nThe person you speak to at 999 will give you advice about what to do.\n## Other side effects\nThese are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet.\n\nInformation:\n\n## Reporting side effects\nYou can report any suspected side effect using the Yellow Card safety scheme.\n\n[Visit the Yellow Card website for more information about reporting side effects](https:\/\/yellowcard.mhra.gov.uk\/).","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

2 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.nhs.uk/medicines/melatonin/side-effects-of-melatonin/
Last Crawled	2026-04-14 15:14:58 (2 days ago)
First Indexed	2023-02-23 14:28:55 (3 years ago)
HTTP Status Code	200
Meta Title	Side effects of melatonin - NHS
Meta Description	NHS medicines information on side effects of melatonin and what you can do to cope.
Meta Canonical	null
Boilerpipe Text	Side effects of melatonin - Brand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin Like all medicines, melatonin can cause side effects, but most people will not have any side effects. Common side effects Melatonin does not have many common side effects but there are things you can do to help cope with them: Feeling sleepy or tired in the daytime Do not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired. If you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you. Headache Make sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller. Talk to a doctor if headaches last longer than a week or are severe. Stomach ache Try putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe. Feeling sick (nausea) Take melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals. Feeling dizzy If taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse. Feeling irritable or restless If this does not get better after a few days, stop taking the medicine and talk to your doctor. Dry mouth Chew sugar-free gum or suck sugar-free sweets. Dry or itchy skin Apply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin. If this does not get better after 1 week, stop taking the medicine and talk to your doctor. Pains in your arms or legs If this does not get better after a few days, stop taking the medicine and talk to your doctor. Strange dreams or night sweats If this does not get better after a few days, stop taking the medicine and talk to your doctor. Speak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away. Serious side effects Serious side effects are rare and happen to less than 1 in 1,000 people. Speak to your doctor if you start feeling low or sad as this could be a sign of depression. Call your doctor or call 111 now if you: get changes to your eyesight, such as blurred vision feel faint or pass out start feeling confused or dizzy, or things seem to be spinning around you ( vertigo ) have any bleeding that does not stop, unexplained bruising or blood in your urine Serious allergic reaction In rare cases, it's possible to have a serious allergic reaction ( anaphylaxis ) to melatonin. Immediate action required: Call 999 now if: your lips, mouth, throat or tongue suddenly become swollen you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air) your throat feels tight or you're struggling to swallow your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet) you suddenly become very confused, drowsy or dizzy someone faints and cannot be woken up a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face) You or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling. These can be signs of a serious allergic reaction and may need immediate treatment in hospital. Information: Do not drive yourself to A&E. The person you speak to at 999 will give you advice about what to do. Other side effects These are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet. Information: Reporting side effects You can report any suspected side effect using the Yellow Card safety scheme. Visit the Yellow Card website for more information about reporting side effects .
Markdown	[Skip to main content](https://www.nhs.uk/medicines/melatonin/side-effects-of-melatonin/#maincontent) - [Health A to Z](https://www.nhs.uk/health-a-to-z/) - [NHS services](https://www.nhs.uk/nhs-services/) - [Healthy living](https://www.nhs.uk/live-well/) - [Mental health](https://www.nhs.uk/mental-health/) - [Care and support](https://www.nhs.uk/social-care-and-support/) - [Home](https://www.nhs.uk/) - Browse More 1. [Home](https://www.nhs.uk/) 2. [Health A to Z](https://www.nhs.uk/health-a-to-z/) 3. [Medicines A to Z](https://www.nhs.uk/medicines/) 4. [Melatonin](https://www.nhs.uk/medicines/melatonin/) [Back to Melatonin](https://www.nhs.uk/medicines/melatonin/) # Side effects of melatonin - Brand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin Like all medicines, melatonin can cause side effects, but most people will not have any side effects. ## Common side effects Melatonin does not have many common side effects but there are things you can do to help cope with them: Feeling sleepy or tired in the daytime Do not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired. If you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you. Headache Make sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller. Talk to a doctor if headaches last longer than a week or are severe. Stomach ache Try putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe. Feeling sick (nausea) Take melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals. Feeling dizzy If taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse. Feeling irritable or restless If this does not get better after a few days, stop taking the medicine and talk to your doctor. Dry mouth Chew sugar-free gum or suck sugar-free sweets. Dry or itchy skin Apply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin. If this does not get better after 1 week, stop taking the medicine and talk to your doctor. Pains in your arms or legs If this does not get better after a few days, stop taking the medicine and talk to your doctor. Strange dreams or night sweats If this does not get better after a few days, stop taking the medicine and talk to your doctor. Speak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away. ## Serious side effects Serious side effects are rare and happen to less than 1 in 1,000 people. Speak to your doctor if you start feeling low or sad as this could be a sign of depression. Call your doctor or call 111 now if you: - get changes to your eyesight, such as blurred vision - feel faint or pass out - start feeling confused or dizzy, or things seem to be spinning around you ([vertigo](https://www.nhs.uk/conditions/vertigo/)) - have any bleeding that does not stop, unexplained bruising or blood in your urine ### Serious allergic reaction In rare cases, it's possible to have a serious allergic reaction ([anaphylaxis](https://www.nhs.uk/conditions/anaphylaxis/)) to melatonin. #### Immediate action required: Call 999 now if: - your lips, mouth, throat or tongue suddenly become swollen - you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air) - your throat feels tight or you're struggling to swallow - your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet) - you suddenly become very confused, drowsy or dizzy - someone faints and cannot be woken up - a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face) You or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling. These can be signs of a serious allergic reaction and may need immediate treatment in hospital. Information: Do not drive yourself to A\&E. The person you speak to at 999 will give you advice about what to do. ## Other side effects These are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet. Information: ## Reporting side effects You can report any suspected side effect using the Yellow Card safety scheme. [Visit the Yellow Card website for more information about reporting side effects](https://yellowcard.mhra.gov.uk/). ## More in [Melatonin](https://www.nhs.uk/medicines/melatonin/) - [About melatonin](https://www.nhs.uk/medicines/melatonin/about-melatonin/) - [Who can and cannot take it](https://www.nhs.uk/medicines/melatonin/who-can-and-cannot-take-melatonin/) - [How and when to take it](https://www.nhs.uk/medicines/melatonin/how-and-when-to-take-melatonin/) - Side effects - [Pregnancy, breastfeeding and fertility](https://www.nhs.uk/medicines/melatonin/pregnancy-breastfeeding-and-fertility-while-taking-melatonin/) - [Taking it with other medicines and herbal supplements](https://www.nhs.uk/medicines/melatonin/taking-melatonin-with-other-medicines-and-herbal-supplements/) - [Common questions](https://www.nhs.uk/medicines/melatonin/common-questions-about-melatonin/) Page last reviewed: 13 February 2023 Next review due: 13 February 2026 ## Support links - [Home](https://www.nhs.uk/) - [Health A to Z](https://www.nhs.uk/health-a-to-z/) - [NHS services](https://www.nhs.uk/nhs-services/) - [Healthy living](https://www.nhs.uk/live-well/) - [Mental health](https://www.nhs.uk/mental-health/) - [Care and support](https://www.nhs.uk/social-care-and-support/) - [COVID-19](https://www.nhs.uk/conditions/covid-19/) - [NHS App](https://www.nhs.uk/nhs-app/) - [Find my NHS number](https://www.nhs.uk/nhs-services/online-services/find-nhs-number/) - [View your GP health record](https://www.nhs.uk/nhs-services/gps/view-your-gp-health-record/) - [View your test results](https://www.nhs.uk/nhs-services/online-services/view-your-test-results/) - [About the NHS](https://www.nhs.uk/using-the-nhs/about-the-nhs/) - [Healthcare abroad](https://www.nhs.uk/using-the-nhs/healthcare-abroad/) - [Other NHS websites](https://www.nhs.uk/nhs-sites/) - [Profile editor login](https://www.nhs.uk/our-policies/profile-editor-login/) - [About us](https://www.nhs.uk/about-us/) - [Report an issue with the NHS website](https://www.nhs.uk/report-an-issue-with-the-nhs-website) - [Accessibility statement](https://www.nhs.uk/accessibility-statement/) - [Our policies](https://www.nhs.uk/our-policies/) - [Cookies](https://www.nhs.uk/our-policies/choose-your-cookie-settings/) © Crown copyright
Readable Markdown	Side effects of melatonin - Brand names: Circadin Adaflex, Ceyesto, Slenyto, Syncrodin Like all medicines, melatonin can cause side effects, but most people will not have any side effects. ## Common side effects Melatonin does not have many common side effects but there are things you can do to help cope with them: Feeling sleepy or tired in the daytime Do not drive, cycle or use tools or machinery if you're feeling this way. Do not drink any alcohol as this will make you feel more tired. If you're taking more than one 2mg tablet talk to your doctor to see if you can reduce your dose. If this does not help, talk to your doctor as melatonin may not be the right medicine for you. Headache Make sure you rest and drink plenty of fluids. Do not drink too much alcohol as it can make your headache worse, and it affects the way that melatonin works. Ask a pharmacist to recommend a painkiller. Talk to a doctor if headaches last longer than a week or are severe. Stomach ache Try putting a heat pad or covered hot water bottle on your tummy. Talk to your doctor if the pain continues or is severe. Feeling sick (nausea) Take melatonin tablets or liquid after food. Stick to simple meals and do not eat rich or spicy food. It can help to eat and drink slowly and have smaller and more frequent meals. Feeling dizzy If taking melatonin makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. Do not drive, cycle or use tools or machinery if you're feeling dizzy. Do not drink alcohol as it will make you feel worse. Feeling irritable or restless If this does not get better after a few days, stop taking the medicine and talk to your doctor. Dry mouth Chew sugar-free gum or suck sugar-free sweets. Dry or itchy skin Apply a moisturiser often. Try using an oil-free face moisturiser for sensitive skin. If this does not get better after 1 week, stop taking the medicine and talk to your doctor. Pains in your arms or legs If this does not get better after a few days, stop taking the medicine and talk to your doctor. Strange dreams or night sweats If this does not get better after a few days, stop taking the medicine and talk to your doctor. Speak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away. ## Serious side effects Serious side effects are rare and happen to less than 1 in 1,000 people. Speak to your doctor if you start feeling low or sad as this could be a sign of depression. Call your doctor or call 111 now if you: - get changes to your eyesight, such as blurred vision - feel faint or pass out - start feeling confused or dizzy, or things seem to be spinning around you ([vertigo](https://www.nhs.uk/conditions/vertigo/)) - have any bleeding that does not stop, unexplained bruising or blood in your urine ### Serious allergic reaction In rare cases, it's possible to have a serious allergic reaction ([anaphylaxis](https://www.nhs.uk/conditions/anaphylaxis/)) to melatonin. #### Immediate action required: Call 999 now if: - your lips, mouth, throat or tongue suddenly become swollen - you're breathing very fast or struggling to breathe (you may become very wheezy or feel like you're choking or gasping for air) - your throat feels tight or you're struggling to swallow - your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet) - you suddenly become very confused, drowsy or dizzy - someone faints and cannot be woken up - a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face) You or the person who's unwell may also have a rash that's swollen, raised, itchy, blistered or peeling. These can be signs of a serious allergic reaction and may need immediate treatment in hospital. Information: Do not drive yourself to A\&E. The person you speak to at 999 will give you advice about what to do. ## Other side effects These are not all the side effects of melatonin. For a full list, see the leaflet inside your medicine packet. Information: ## Reporting side effects You can report any suspected side effect using the Yellow Card safety scheme. [Visit the Yellow Card website for more information about reporting side effects](https://yellowcard.mhra.gov.uk/).
Shard	75 (laksa)
Root Hash	11359509702434384875
Unparsed URL	uk,nhs,www!/medicines/melatonin/side-effects-of-melatonin/ s443