Disclosure: This post was sponsored by the Canadian Beverage Association, and I have received monetary compensation. As always, my own professional opinions and views are expressed.
Did you know that March is Caffeine Awareness Month? It’s a good time to check in on your intake and understand how to find caffeine in foods and drinks. Take this short caffeine quiz and let me know if you discovered new information!
Question #1: True or False? The maximum daily intake of caffeine for adults is the amount found in 5 cups of coffee.
Answer: False
According to Health Canada, most adults can consume up to 400 mg of caffeine per day from all sources. This is actually equivalent to about 2-3 small cups of brewed coffee (237 ml sized cups). If you’re sensitive to caffeine, you may need to consider a lower amount of caffeine. Note that people who are pregnant, trying to become pregnant or breastfeeding should limit caffeine intake to no more than 300 mg per day.
Caffeine can be found in a variety of foods and drinks. See the chart below for the caffeine content of some common sources.[1],[2]
Question #2: True or False? Natural caffeine has different properties than synthetic caffeine.
Answer: False
You might be surprised to learn that both natural and synthetic caffeine have the same structural and physiological properties. Naturally occurring caffeine is found in plant-based foods such as coffee beans, tea, cocoa, chocolate, kola nuts, guarana berries and yerba mate. Synthetic caffeine can be added to different products like energy bars, energy drinks and soft drinks. Caffeine is caffeine, whether it’s natural or synthetic, and the effect on the body is the same.
Question #3: True or False? Foods and beverages with higher levels of added caffeine will show the caffeine amount on the label.
Answer: True
Foods or beverages with higher levels of added caffeine are considered “supplemented foods.” Health Canada has developed new labelling guidelines for supplemented foods which will list the amount of caffeine per serving. By January 1st, 2026, all supplemented foods must show a Supplemented Food Facts table, and you may already see this information on food packages now.
The Supplemented Food Facts table looks similar to a Nutrition Facts table found on packaged foods. You’ll find information about the serving size, calories and different nutrients. In addition, the table includes a section called “Supplemented with” which lists all of the supplemental ingredients found in the product. The maximum amount of caffeine that can be added to a supplemented food or drink is 180 mg per single serving. In the example below, you can see that 1 can of this beverage contains 170 mg of caffeine.
Supplemented foods can contain certain ingredients that should not be consumed in excess by the general population or consumed by those who are pregnant, children or other vulnerable groups. For this reason, some supplemented foods will also show a caution identifier as well as a caution box with additional information to help you decide if the product is right for you.
Question #4: True or False? Caffeine can improve exercise performance.
Answer: True
When taken before exercise, caffeine has been shown to reduce our perception of fatigue and can help us maintain our sports performance and endurance for a longer time.[3] Research shows that caffeine can be beneficial for people and athletes who engage in endurance aerobic types of activities such as running, cycling, cross-country skiing or swimming as well as activities like sprinting and jumping.[4]
Question #5: True or False? Caffeinated beverages are dehydrating.
Answer: False
Caffeine does have a mild diuretic effect so you may feel the need to urinate more often. However, remember that caffeinated beverages are mostly water, so the liquid you lose is usually offset by the amount you’re drinking. A good general way to tell if you’re dehydrated is to look at the colour of your urine. If your urine is lightly coloured, then you’re likely hydrated. If it’s dark yellow, then you may be dehydrated and it’s a good sign to get more fluids from beverages, soups, fruits and vegetables.
References:
[1] Health Canada 2022. Caffeine in Foods. Table: Average amounts of caffeine in food and drink, Health Canada: https://www.canada.ca/en/health-canada/services/food-nutrition/food-safety/food-additives/caffeine-foods.html
[2] Starbucks 2025 – “Short” 236 ml Dark Roast contains 155-195 mg caffeine https://www.starbucks.ca/menu/product/479/hot/nutrition.
[3] Nutrition and athletic performance. Position paper of Dietitians of Canada, Academy of Nutrition and Dietetics and the American College of Sports Medicine (2016). https://www.dietitians.ca/DietitiansOfCanada/media/Documents/Resources/noap-position-paper.pdf?ext=.pdf
[4] Guest, N.S., VanDusseldorp, T.A., Nelson, M.T. et al. International society of sports nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr 18, 1 (2021). https://doi.org/10.1186/s12970-020-00383-4 https://jissn.biomedcentral.com/articles/10.1186/s12970-020-00383-4