The Canadian Drug Reference for Health Professionals

The Compendium of Pharmaceuticals and Specialities: The Canadian Drug Reference for Health Professionals (CPS) is widely used by Canadian Health Care Professionals.
 
In it's section for patient teaching, it uses the above Supplementary Information Booklet which states the BCP works in two ways.
 
In it's section for Health Care Professionals, some BCPs mention at least four mechanisms, while others state the above two mechanisms, and only infer others. Thus, there is no standard presentation of this information.

Summary and Conclusion >>