Legal status · Canada
Is Betaine legal in Canada?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Betaine 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, 3 human studies are cited on its profile.
Betaine 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 | 3 of 5 citations on the profile |
| Reviewed | Sep 2026 |
Classification and note come from the Betaine profile, checked against Health Canada, Health Products and Food Branch (Health Canada) listings at the reviewed date.
What this means
- 01
Betaine 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 Betaine is
Six grams a day lowers fasting homocysteine by 20 percent in healthy adults and raises LDL cholesterol by 0.36 mmol/L in the same randomised studies. The trials that lowered homocysteine by other means and then counted heart attacks found nothing: 12,064 survivors, homocysteine down 28 percent, vascular event risk ratio 1.04.
Betaine is the cleanest example in this batch of a compound that does exactly what it says on the bottle, where what it says on the bottle turns out not to be the point. It lowers homocysteine, reliably and dose-dependently.
Mechanism: Betaine donates a methyl group to homocysteine through betaine-homocysteine methyltransferase, regenerating methionine. This is the alternative to the folate and vitamin B12 route, and it runs mainly in liver and kidney, which is why betaine lowers homocysteine even when folate status is adequate.
Regulatory history: Betaine anhydrous is FDA-approved as a prescription medicine for the treatment of homocystinuria. The same molecule is separately sold over the counter as a dietary supplement, usually labelled trimethylglycine or TMG, with no approved indication.
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 Betaine 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.
Betaine in other countries
Frequently asked questions
Is Betaine legal in Canada?
Betaine 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, 3 human studies are cited on its profile.
Can I buy Betaine in Canada?
Yes, in supplement or cosmetic form. In Canada Betaine 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 Betaine Health Canada approved?
No. In Canada Betaine is classified as "Sold as a supplement", which is not a Health Canada marketing approval. For comparison, the US FDA status is: Betaine anhydrous is FDA-approved as a prescription medicine for the treatment of homocystinuria. The same molecule is separately sold over the counter as a dietary supplement, usually labelled trimethylglycine or TMG, with no approved indication.. On the evidence, 3 human studies are cited on its profile.
Related compounds in Canada
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Betaine live on its compound profile.
Betaine profileThis page is general information about the regulatory status of Betaine 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. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.