WN Pharmaceuticals, Ltd. is another Canadian firm that makes a lactase enzyme product. It's called webber naturals lactase enzyme. It comes in blister packs, meaning that you pop each one out of a flat package individually. Apparently, it comes only in the triple strength 9000 FCC units. Inert ingredients are cellulose and magnesium stearate.
Wikipedia states that:
Magnesium stearate melts at about 88 °C, is not soluble in water, and is generally considered safe for human consumption. Because it is widely regarded as harmless, it is often used as a diluent in the manufacture of medical tablets, capsules and powders (E470b). In this regard, the substance is also useful because it has lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of chemical powders into solid tablets; magnesium stearate is the most commonly used lubricant for tablets.
When used as a filling agent in the manufacture of capsules and tablets, such as vitamins, the source of this ingredient is typically bovine. However, there is an increasing number of vegetarian options in which the product specifically indicates it contains magnesium stearate from vegetable sources.
You can read a product monograph .pdf about webber naturals lactase enzyme online.
It is available from many of the same online sources as SteriMax's Dairy Free lactase enzyme so it may be orderable in the U.S. in addition to Canada.