Hi Alan
No not nut allergy,
Allerstop deals with Pollen, dust mite and its faeces, white mould spore and pet hair, it contains a substance called Auxillase which is derived from the papaya fruit , the the four carriers listed above carry a very high concetration of protein, a "super protein" if you will, most of us produce a natural enzyme which combats this.
It is not possible to remove all the protein and pollution from the air, but it is possible to change the way the human metabolism views the the protein,
if you imagine trying to each an apple whole, one bite one swallow you would choke (allergic reaction) if you ate the same apple but cut it the apple into eight you would be able to eat it with no problem, Allergstop is if you like the knife it breaks down the protein strain effectively changing its appearance, thus balancing the environment naturally, those who have had the opportunity to use it have commented on the immediately.
Hope this helps
Best regards Nick