Here are a few brief excerpts from an article Homeopathy for Allergies: Nothing to Sneeze At

The word “allergy” did not even exist a century ago, and yet, respiratory allergies today are the 5th leading chronic disease in the U.S. and are the 3rd most common chronic disease among children under 18 years old. [1] It has been estimated that one in seven Americans had a respiratory allergy in 1950, but one in four have one now….

Although homeopaths have a history of being at the forefront of medical research and discovery, it is particularly appropriate and even predictable that they would lead the way in the field of allergy. Because the primary principle of modern allergy treatment derives from the homeopathic principle of “treating like with like,” the spirit of homeopathy has lived on, despite the tendency of orthodox physicians to ignore it….

What this research suggests is that homeopathic medicines provide an often effective and extremely safe means of treatment for patients with respiratory allergies. Further, due to the widely recognized safety of homeopathic medicines, it makes sense to consider safe methods before resorting to more risky treatments….