How to Read a Cannabis Label in Ontario

Illustration of a cannabis product label with a barcode for the Mellow Malibu label reading guide

Legal cannabis packaging in Canada follows strict federal rules, so once you know where to look, every label tells you the same essential information. Here is a walk-through of the main parts.

1. The standardized cannabis symbol

A red octagon with a cannabis leaf and the letters “THC” appears on products containing THC. It is there so the package is instantly recognisable as cannabis.

2. The health warning

A yellow box contains one of a set of rotating Health Canada health warnings. These messages are mandatory and appear in both English and French.

3. THC and CBD content

Labels show both THC and CBD. For dried flower and pre-rolls, these are usually shown as a percentage. For edibles, beverages, capsules and many extracts, they are shown in milligrams per unit or per package.

You will often see two numbers, such as “THC” and “Total THC”. Total THC includes THCA, the form found in the raw plant that converts to THC when heated, so it is the more useful number for comparing products. The same applies to Total CBD. Learn more in THC vs. CBD.

4. Product and producer details

5. Dates and lot number

Every package shows a packaging date and a lot number, which lets the producer trace the product if there is ever a recall. Some products also show an expiry or best-before date.

6. The excise stamp

The excise stamp shows that federal and provincial duty has been paid. Each province has its own stamp colour, and a missing or damaged stamp is a warning sign. Products without one are not legal for sale. See how to spot a legal store.

Putting it together

When you compare products, look at total THC and CBD, the format, the amount per unit, and the packaging date. Our staff at 647 Welham Rd are happy to go through any label with you, or you can browse the online menu, where each product lists its cannabinoid content.

Related guides: THC vs. CBD, Cannabis Edibles 101: Labels, Limits and Starting Low, Your First Visit to a Cannabis Store: What to Expect.

This article is general information for adults 19+ in Ontario. It is not medical advice. Must be 19+ to purchase. Please consume responsibly.

Questions about a product? Ask our staff in-store at 647 Welham Rd or browse the live menu.

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