Message me, I live in Shanghai, China.. If I understand better maybe I can assist you.
Easy way. Connect with publishers of health magazines, write articles for the magazine (paid or free) using soft sell techniques to promote your products. Or you could setup a Food Porn site (glitzy photos of finished recipes), where recipes skew toward using your products. Likely several 100s...
To directly answer your question, different products have different requirements and are subject to different regulations. And each product and product category should be evaluated individually. You can check the government link for some related info. https://www.ic.gc.ca/eic/site/ceb-bhst.nsf/...