The basic NLP Allergy Technique has now been applied thousands of times in clinical and training settings and has been effective in changing a vast majority of allergy symptoms. The types of allergies have included those to airborne material, such as smoke, pollen, perfume, etc., to various foods, and even in cases involving asthma. In a study done in Salt Lake City (Hallbom & Smith, 1987), for example, thirty two individuals were guided through the allergy pattern for a multitude of allergies, including pollen, smoke and foods. They even treated a person who was sensitive to poison oak, which is a kind of an allergy. Out of the thirty people, all but three showed immediate reduction of their symptoms. Most of the people in the study, in fact, showed a complete suppression of the allergic reaction immediately after learning the process. A six month follow up revealed that only three of the individuals who had responded positively had any recurrence of their allergies.

In the Summer of 1994, a controlled clinical test of the Allergy Process was conducted with approximately 120 allergy sufferers. The study was conducted under the supervision of Dr. David Paul at a hospital in Vail, Colorado. The study showed that the Allergy Process produced significant reduction in the symptoms of many types of allergies, in particular food allergies. Details of this study are available from the Institute for Advanced Studies of Health (IASH).