Absolutely. Let's focus on soft drinks first, and then I'll come back to energy drinks and caffeine in general.
The amount of caffeine that can be used in a soft drink in Canada is regulated by the Food and Drugs Act and regulations and should not exceed 60 milligrams, I believe, which is the equivalent of a third of what you'd find in an average cup of coffee. Interestingly enough, Health Canada will tell you--and you can look it up on their website--that if you take a look at Canadians' sources of caffeine, 60% comes from coffee, 30% comes from tea, and 10% from all other sources. That's in adults. When you get down into the younger categories, I believe it's 30% from cola and cola-type beverages. It might be slightly higher than that. The point is that you can get those statistics, and caffeine comes from a wide variety of sources.
Again, it's fairly regulated. The Food and Drugs Act and regulations are fairly specific in the application, and recently it was expanded to allow for the use of caffeine in non-cola beverages. To my knowledge, I don't think a non-cola soft drink that is using caffeine has come onto the market in the year since the change. I'm not aware of it.
Energy drinks in Canada are the most highly regulated market for energy drinks. In 160 countries worldwide, they are regulated as food. I think we and the dietitians can agree on one point: we'd like them to be regulated as food too. However, the route to market in Canada has been the Natural Health Products Regulations. The caffeine content is declared on the can in terms of the total quantitative declaration of caffeine from all sources. The formulation, the safety, the efficacy, and all of the other requirements are very onerous in Canada, much more so than in any other country.