How to Read an Ontario Cannabis Label: THC, CBD, Terpenes and Equivalency

Walking into a dispensary for the first time and picking up a package can feel a little like reading a foreign language. Every legal cannabis product sold in Ontario carries a standardized label, and once you know what each number means, choosing the right product gets much easier. Here is a plain-language guide to reading an Ontario cannabis label, from the team at Reserved Cannabis on Scottsdale Drive in Guelph.

The first thing to look for is the standardized cannabis symbol, the red “THC” stop-sign. It tells you at a glance that the product contains THC and was produced under Health Canada’s regulated system. If a product does not carry this symbol, it is not part of the legal, tested supply.

The two numbers most people focus on are THC and CBD. You will usually see them shown two ways: as a percentage for dried flower, and as total milligrams for edibles, oils and capsules. For dried flower, a higher percentage means a more potent product, so flower listed at 20% THC is stronger than one at 14%. For edibles and beverages, what matters is the total milligrams per package. In Ontario, a package of edibles can contain no more than 10 mg of THC in total, which keeps the maths simple.

CBD is the non-intoxicating counterpart to THC. Products range from high-THC, to balanced (roughly equal parts THC and CBD), to high-CBD. Balanced and CBD-forward options tend to feel gentler, which is why many people who are newer to cannabis choose to start there.

You will also see “Total THC” and “Total CBD.” Raw cannabis contains THC and CBD in their acid forms, which convert when heated. Total THC reflects the potency you would actually experience once the product is smoked, vaped or cooked, so it is the more useful figure to compare between products.

Another figure worth understanding is equivalency, for example “3.5 g dried equivalent.” Ontario sets limits on how much cannabis you can buy and carry in public. Because a gram of edibles or extract is not the same as a gram of flower, equivalency translates every format back to a common dried measure so you can keep track. It describes quantity, not strength.

Some labels now list terpenes, the aromatic compounds that give each strain its character, from citrus and pine to earthy or floral notes. Terpenes are not regulated the way THC is, but knowing the dominant ones gives you a clue about how a strain will smell and feel beyond the raw THC number. It is also worth checking the packaged-on date. Cannabis does not spoil, but flower is at its best in the months after packaging, and storing it somewhere cool and dark helps it stay fresh.

Labels tell you a lot, but they cannot replace a good conversation. The staff at our Guelph store on Scottsdale Drive are happy to walk you through any label and help match a product to what you are looking for. Our Etobicoke location on The Queensway is reopening soon, so keep an eye out if you are in the west end of Toronto. Start low, go slow, and give yourself time to learn what works for you.

Must be 19+ with valid ID. Please consume responsibly. This article is educational and not medical advice.