The latest edition of Celiac News has a story on communion for people who need to eat gluten free. Here is contact information for the companies mentioned in the article.
Ener-G Foods sells wafers that are gluten, dairy, egg, yeast, soy, and nut-free. Check their web site for Canadian distributors. www.ener-g.com
Augsburg Fortress sells gluten, wheat, dairy and corn-free wafers, $9.50 for 40 wafers. www.afcanada.com
St. Robert Bellarmine Society sells low-gluten wafers acceptable for Catholic Eucharist, $22.95 per 100 wafers. www.rbellarmine.com