Food products are thought to be served by ad libitum consumption. The nutrition facts panel is targeted at explaining the daily serving amounts to the consumer.
Consumers are responsible for making decisions on their own for this category.
NHPs are thought to have regimented dosing much like drugs. The directions of use, risk information, and recommended uses inform the consumer. Consumers make their own decision here as these are not prescribed but often discuss these types of products with their doctors.
Some traditional food type formats are beverages and snack bars whereas NHP type formats are tablets and capsules. Health Canada has published a helpful guidance document for products that sit on the NHP Food Interface.