Regretfully, because the Halacha is that one can only perform the Mitzvah of eating Matzo at the Seder with a Matzo that is made from one of the five varieties of grain, eating Matzos using any of the other flours that are gluten free would still not enable one to fulfill the mitzvah. [The five grains are barley, wheat, rye, oats, and spelt].
In researching for some kind of solution, we have learned the following – some people with the same gluten allergy use either oat Matzah or spelt Matzah. While not completely gluten-free, oat Matzah is especially soluble and easy to digest. We suggest that the allergy sufferer discuss the matter with his or her allergist and his or her Rabbi.
We are aware of one brand of Shemura Oat Matzah manufactured in the United Kingdom by Rabbi Kestenbaum and certified by Dayan Westheim of Manchester, England. We are told, but have not personally verified, that this Shemura Oat Matzah is made from a special crop of oats which had been bred and grown to be gluten free, as verified by a laboratory.
We are told that the Matzah is distributed throughout the world. You may be able to purchase some in your general vicinity.
As a matter of policy, the OU does not share evaluations of other Hechsherim with the general public for a variety of reasons. We recommend that you discuss these questions with your local Rabbi.
To purchase the Oat Matzahs you can try the following:
The phone number at the source in London is 011-44-230-8455-9476.
The fax number at the source in London is 011-44-20-8455-3212.
Email: sula [at] waitrose.com
Website: http://glutenfreeoatmatzos.com
Obviously, you are familiar with the Halacha – If, in the performance of a Mitzvah, should a situation arise where an illness or an allergic reaction becomes life-threatening – not only do we not have to perform the Mitzvah, but the Mitzvah becomes not to put your life in danger. In other words, not eating the Matzo is the Mitzvah.
Otherwise, if the allergic reaction is not life-threatening, but would bring on severe reactions, a Rabbi should be consulted. The Rabbi will ask pertinent question about the nature of the reaction and of the possible risks involved. From the answers given, the Rabbi may (or may not) rule that Matzoh should not be eaten on Passover.
If the reaction would bring on mild discomfort, it may be helpful to know that according to most Poskim the only times when one MUST eat the prescribed amount of Matzo are at the Seder table. If one would not eat Matzo the rest of the Passover holiday, there would be no violation of a commandment.
But as we mentioned earlier, this matter should be discussed with both your allergist and your local reliable Orthodox Rabbi.