🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 75 (from laksa170)

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/about-melatonin/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.nhs.uk/medicines/melatonin/about-melatonin/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.nhs.uk\/medicines\/melatonin\/about-melatonin\/","crawl_time":1775610098,"first_indexed_time":1677256299,"http_code":200,"src_unparsed":"uk,nhs,www!\/medicines\/melatonin\/about-melatonin\/ s443","src_root_hash":"11359509702434384875","history_drop_reason":null,"meta_title":"About melatonin - NHS","meta_descriptions":["NHS medicines information on melatonin – what it's used for and key facts."],"attrs_boilerpipe_text":"About melatonin\n-\nBrand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin\nMelatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep.\nYou can take a synthetic version of melatonin for short periods if you have sleep problems such as\ninsomnia\n. This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag.\nMelatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults.\nMelatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink.\nKey facts\nMelatonin takes around 1 to 2 hours to work.\nYou'll usually take melatonin for up to 13 weeks but some people may need it for longer.\nSome people may get a headache, or feel tired, sick or irritable the day after taking melatonin.\nDrinking alcohol or smoking while taking melatonin can stop it working as well as it should.\nIf you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy.\nPage last reviewed: 13 February 2023\nNext review due: 13 February 2026","attrs_markdown":"\n\n[Skip to main content](https:\/\/www.nhs.uk\/medicines\/melatonin\/about-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# About melatonin  - Brand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin\nMelatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep.\n\nYou can take a synthetic version of melatonin for short periods if you have sleep problems such as [insomnia](https:\/\/www.nhs.uk\/conditions\/insomnia\/). This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag.\n\nMelatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults.\n\nMelatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink.\n\n## Key facts\n- Melatonin takes around 1 to 2 hours to work.\n- You'll usually take melatonin for up to 13 weeks but some people may need it for longer.\n- Some people may get a headache, or feel tired, sick or irritable the day after taking melatonin.\n- Drinking alcohol or smoking while taking melatonin can stop it working as well as it should.\n- If you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy.\n\n## More in [Melatonin](https:\/\/www.nhs.uk\/medicines\/melatonin\/)\n- 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](https:\/\/www.nhs.uk\/medicines\/melatonin\/side-effects-of-melatonin\/)\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":"About melatonin  - Brand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin\n\nMelatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep.\n\nYou can take a synthetic version of melatonin for short periods if you have sleep problems such as [insomnia](https:\/\/www.nhs.uk\/conditions\/insomnia\/). This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag.\n\nMelatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults.\n\nMelatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink.\n\n## Key facts\n- Melatonin takes around 1 to 2 hours to work.\n- You'll usually take melatonin for up to 13 weeks but some people may need it for longer.\n- Some people may get a headache, or feel tired, sick or irritable the day after taking melatonin.\n- Drinking alcohol or smoking while taking melatonin can stop it working as well as it should.\n- If you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy.\n\nPage last reviewed: 13 February 2023   \n Next review due: 13 February 2026","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

14 minutes 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 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/about-melatonin/
Last Crawled	2026-04-08 01:01:38 (14 minutes ago)
First Indexed	2023-02-24 16:31:39 (3 years ago)
HTTP Status Code	200
Meta Title	About melatonin - NHS
Meta Description	NHS medicines information on melatonin – what it's used for and key facts.
Meta Canonical	null
Boilerpipe Text	About melatonin - Brand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin Melatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep. You can take a synthetic version of melatonin for short periods if you have sleep problems such as insomnia . This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag. Melatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults. Melatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink. Key facts Melatonin takes around 1 to 2 hours to work. You'll usually take melatonin for up to 13 weeks but some people may need it for longer. Some people may get a headache, or feel tired, sick or irritable the day after taking melatonin. Drinking alcohol or smoking while taking melatonin can stop it working as well as it should. If you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy. Page last reviewed: 13 February 2023 Next review due: 13 February 2026
Markdown	[Skip to main content](https://www.nhs.uk/medicines/melatonin/about-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/) # About melatonin - Brand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin Melatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep. You can take a synthetic version of melatonin for short periods if you have sleep problems such as [insomnia](https://www.nhs.uk/conditions/insomnia/). This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag. Melatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults. Melatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink. ## Key facts - Melatonin takes around 1 to 2 hours to work. - You'll usually take melatonin for up to 13 weeks but some people may need it for longer. - Some people may get a headache, or feel tired, sick or irritable the day after taking melatonin. - Drinking alcohol or smoking while taking melatonin can stop it working as well as it should. - If you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy. ## More in [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](https://www.nhs.uk/medicines/melatonin/side-effects-of-melatonin/) - [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	About melatonin - Brand names: Circadin, Adaflex, Ceyesto, Slenyto, Syncrodin Melatonin is a hormone that occurs naturally in your body. At night, your levels of melatonin rise, before returning to normal during the day. This helps to control how and when you sleep. You can take a synthetic version of melatonin for short periods if you have sleep problems such as [insomnia](https://www.nhs.uk/conditions/insomnia/). This adds to your body's natural supply of melatonin, so you fall asleep more quickly and you're less likely to wake up during the night. It may also help with symptoms of jetlag. Melatonin is mainly used to treat short-term sleep problems in people aged 55 and over. It can also sometimes be prescribed by specialists to help with longer-term sleep problems in some children and adults. Melatonin is available on prescription only. It comes as standard tablets, slow release tablets, capsules and a liquid that you drink. ## Key facts - Melatonin takes around 1 to 2 hours to work. - You'll usually take melatonin for up to 13 weeks but some people may need it for longer. - Some people may get a headache, or feel tired, sick or irritable the day after taking melatonin. - Drinking alcohol or smoking while taking melatonin can stop it working as well as it should. - If you're taking melatonin to help you sleep, do not take any herbal remedies which may affect sleep at the same time. This may make you very drowsy. Page last reviewed: 13 February 2023 Next review due: 13 February 2026
Shard	75 (laksa)
Root Hash	11359509702434384875
Unparsed URL	uk,nhs,www!/medicines/melatonin/about-melatonin/ s443