Are you driving or flying? Which port of entry will you be using?
Driving is better, less likely to be stopped, especially if you are going through a busy port, ie, Windsor/Detroit. Flying could be trickier, but it is a crapshoot.
Remember to only answer the questions that they ask, don't OFFER anything that may cause them concern. Be honest and forthcoming and you shouldn't have a problem.
If all else fails, put the HOT-ROX in a Vitamin C bottle. Just kidding. I would, however, only bring the minimal amount of HOT-ROX that would be used for your own personal use, if you are really concerned, but bring it in the bottle, so anyone who is looking can check the ingredients.
Good luck and sorry you have to go to Ottawa.