http://www.timhortons.com/ca/en/about/faq.html
"Is there nicotine or MSG in Tim Hortons coffee?
This urban myth is just that. a myth!
Tim Hortons customers expect and deserve high quality coffee that is always fresh and consistent, along with fast, efficient service and all at a good value. Tim Hortons would like to clearly state that there is absolutely NO nicotine or MSG in our coffee. Tim Hortons coffee has NO ADDITIVES whatsoever. It is made only from a blend of the highest quality premium Arabica beans from several different coffee growing countries.
Tim Hortons decaffeinated coffee also contains no additives. It is decaffeinated through what is called the Swiss Water method, which is the purest manner of removing caffeine from the coffee. Tim Hortons believes that our focus on quality, service and value, is what keeps our customers coming back for more!"