Nicotine Dependence: How It Is Assessed in Canada

This page is general information, not a diagnosis. A doctor, nurse practitioner or pharmacist can assess your dependence and help you choose treatment.

How is nicotine dependence measured?

Clinically, it is diagnosed rather than scored. British Columbia’s guideline on tobacco use disorder defines the condition using DSM-5-TR criteria and describes it as a chronic and often relapsing condition. The guideline then points clinicians to practical questions: how long someone has smoked, how many cigarettes they smoke each day, how many times they have tried to quit and how ready they are to try again.

On smoking history the guideline recommends recording years of smoking, which it calls a better risk indicator than pack-years. If you want to put numbers to your own history, our pack-year calculator does the arithmetic.

We have not included a points-based quiz here. The BC guideline gives no scored cut-offs, and we found no government page that publishes one, so any “low, moderate or high dependence” label would be our invention.

What signs point to dependence?

Health Canada describes what nicotine does and what stopping feels like. Nicotine can make you feel temporarily energized, happy, alert or calm. When you quit, you may feel restless, angry or sad and have difficulty concentrating or sleeping. Those withdrawal effects are real and temporary, and the page on how long cravings last is worth reading before you set a date.

Does dependence work the same way for vaping?

Health Canada says vaping with nicotine can cause physical dependence and addiction. For vapers, the BC guideline advises clinicians to assess dual use of vaping and smoking, along with physical and mental health and social factors, and notes that there are no validated tools for vaping dependence. See how to quit vaping.

How does dependence guide the choice of help?

The guideline connects the assessment to treatment in these ways:

• Dose. Initial nicotine replacement dosing is based on cigarettes per day, and heavy smokers may use more than one patch at once. Replacement should run for at least 8 weeks.
• Choice of medicine. The most effective options are varenicline and combination nicotine replacement, followed by single-agent replacement and bupropion. The choice should match the person’s values and preferences.
• Counselling. The most effective approach combines medication with counselling.
• Pace. The guideline says abrupt quitting has higher success rates than gradual reduction, although Ontario’s quit support page still lists a gradual approach, such as delaying the first cigarette of the day, as one option.

Health Canada puts numbers on the benefit of support: one form of nicotine replacement can roughly double your chance of quitting, combining long-acting and short-acting forms can nearly triple it, bupropion alone can almost double it, varenicline with counselling can nearly triple it, and counselling can almost double it. Nicotine replacement is sold over the counter, while varenicline and bupropion need a prescription.

Comparing products and provincial coverage is the job of the medications page, and how to choose your quit method walks through the decision.

What does coverage look like?

It depends on the province. In British Columbia, PharmaCare covers one continuous course of up to 12 weeks (84 days) per calendar year of nicotine replacement or a prescription drug, and you can get replacement at a pharmacy without a prescription after signing a declaration form. Ontario lists pharmacist counselling and certain drugs under the Ontario Drug Benefit for people 18 and older. The free quit help by province table shows the helpline for each province.