Reading a Vape Label: The 20 mg/mL Nicotine Limit

No vaping product sold in Canada may contain nicotine above 20 mg/mL. That limit comes from the Nicotine Concentration in Vaping Products Regulations (SOR/2021-123), in force since 8 July 2021. A compliant label states the strength as the word “Nicotine,” the number and “mg/mL.”

What does mg/mL actually measure?

Milligrams of nicotine per millilitre of the vaping substance. A 30 mL bottle at 20 mg/mL holds 600 mg of nicotine in total (20 x 30). A 2 mL pod at the same strength holds 40 mg. The strength is a concentration, not the amount in the device, which is why two products with the same label number can deliver very different totals.

The regulations also say how the figure is tested. Strength is measured under the ISO 20714 method, and because that method gives milligrams per gram, the result is multiplied by the density of the liquid in g/mL to reach mg/mL.

What is the legal limit and what does it block?

Two things. Section 4 of the 2021 regulations prohibits a vaping product that contains nicotine above 20 mg/mL. Section 5 goes at the packaging side: a product may not be packaged or sold in packaging that displays a nicotine concentration statement above that figure. A seller cannot get around the cap by printing a higher number on the box. Health Canada’s safety page repeats the same limit in plain language: legal products contain no more than 20 mg/mL.

Provincial rules sit alongside the federal one. Ontario’s retailer page, for example, still says vapour products above 20 mg/mL cannot be sold outside specialty vape stores, a line from before the national cap took effect. The federal limit now applies everywhere.

What else must be on the label?

The Vaping Products Labelling and Packaging Regulations (SOR/2019-353) came into force on 1 July 2020. For a product with nicotine they require:

1. Nicotine concentration statement. The word “Nicotine,” the figure and “mg/mL.” The text must be at least 3 mm high on a main display panel of 45 cm2 or more, 2 mm for panels of 10 to under 45 cm2 and 1.5 mm for panels under 10 cm2.
2. Health warning. Chosen from the government’s published list, shown in English and French and attributed to Health Canada (Santé Canada). On a main display panel of 45 cm2 or more the two-language warning takes at least 35% of the panel.
3. Ingredient list. Starting with “Ingredients:” and its French equivalent, with ingredients present at 1% or more in descending order. Flavour-only ingredients may be grouped under “flavour.”
4. Toxicity information. A hazard symbol and “POISON: if swallowed, call a Poison Control Centre or doctor immediately.”
5. Child-resistant container. Needed for vaping devices and parts and for liquid at 0.1 mg/mL or more, applying to devices from 1 January 2021. Single-use containers must say “USE ENTIRE CONTENTS ON OPENING. THIS CONTAINER IS NOT CHILD-RESISTANT ONCE OPENED.”

Everything must be black on white, in both official languages, and stay legible for the product’s useful life.

How can I tell a product is not legitimate?

Health Canada points to a few checks. Legal packaging has a vaping excise stamp over the seal. The label shows the concentration, ingredients and warnings above. The department also advises against using products of unknown content or origin, even if the source is someone you know. A bottle with no English or French text, no mg/mL figure or no stamp fails the first test before you ever read the strength. Health Canada also says child-resistant does not mean child-proof, and to store liquids where they cannot be mistaken for food or medicine.

Is 20 mg/mL the only rule on nicotine?

No. Flavour restrictions, age limits and tax vary by province, and nicotine pouches follow a different regime. See vape flavour bans by province, disposable vapes and the law and nicotine pouches in Canada. The full federal picture is in vaping laws in Canada, and what stores must do at the till is in vape retailer rules.