Legal status · Canada
Is Melatonin legal in Canada?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Melatonin can be sold in Canada as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: Health Canada has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, no human study is cited on its profile.
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Classification
Sold as a supplement
Health Canada authorisation and DIN status, from the Melatonin profile.
Reviewed Sep 2026. This is a classification, not legal advice.
A research-use-only label on a vial does not make human use lawful.
Melatonin in Canada at a glance
| Classification | Sold as a supplement |
|---|---|
| Health Canada approval status | Not a Health Canada drug approval; sold as a supplement or cosmetic |
| Human studies cited | 0 of 1 citations on the profile |
| Reviewed | Sep 2026 |
Classification and note come from the Melatonin profile, checked against Health Canada, Health Products and Food Branch (Health Canada) listings at the reviewed date.
What this means
- 01
Melatonin can be sold in Canada as a supplement, food or cosmetic ingredient under the classification above, without drug approval.
- 02
Supplement status means Health Canada has not evaluated any health claim; manufacturers are responsible for safety and labeling, and quality varies by product.
- 03
Injectable or "research use only" versions are not supplements. That label does not make human use lawful, and injectables fall under medicines rules.
What Melatonin is
A 2013 meta-analysis found a small effect on primary sleep disorders. There is no blood test that sets the dose. Label accuracy is the product story. Not a longevity hormone you can panel into place.
Melatonin is the pineal night signal sold as a sleep capsule. A 2013 meta-analysis of primary sleep disorders reported a statistically significant but small effect on sleep.
Mechanism: Melatonin receptors in the suprachiasmatic nucleus help time circadian sleep propensity. Exogenous melatonin is a timing cue and, at higher doses, a sedating signal.
Regulatory history: Sold as a dietary supplement in the United States. Not approved as a hypnotic drug. Prescription melatonin-receptor agonists are separate medicines.
How Health Canada treats this kind of product
Authorises drugs for sale through a Notice of Compliance and Drug Identification Number. A compound that is not authorised for sale cannot lawfully be sold for human use, and personal importation of prescription drugs is limited.
The classification above is the The Longevity Archive reading of Health Canada, Health Products and Food Branch listings for Melatonin at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
Melatonin in other countries
Frequently asked questions
Is Melatonin legal in Canada?
Melatonin can be sold in Canada as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: Health Canada has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, no human study is cited on its profile.
Can I buy Melatonin in Canada?
Yes, in supplement or cosmetic form. In Canada Melatonin is classified as "Sold as a supplement", so oral, topical or cosmetic products can be sold under supplement rules. Injectable versions and products labeled "research use only" are not supplements and are not approved for human use.
Is Melatonin Health Canada approved?
No. In Canada Melatonin is classified as "Sold as a supplement", which is not a Health Canada marketing approval. For comparison, the US FDA status is: Sold as a dietary supplement in the United States. Not approved as a hypnotic drug. Prescription melatonin-receptor agonists are separate medicines.. On the evidence, no human study is cited on its profile.
Related compounds in Canada
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Melatonin live on its compound profile.
Melatonin profileThis page is general information about the regulatory status of Melatonin in Canada, current as of Sep 2026. It is not legal advice, and classifications change; check Health Canada, Health Products and Food Branch directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.