Very definitely! But again, there is not a single remedy.
My husband and daughter got over cat allergy; my husband also got over
severe hayfever. The hayfever turned out to be a strangely quick
fix--after his first remedy it has never come back, now 14 years and
counting! The cat sensitivities in both of them were more of a gradual
thing, but now seem to be quite gone for years, and boy are our cats
happy ('cause they get to stay in now)!

Shannon