Natural chewable tablets to support a healthy response to allergens within 15 minutes.AllerStop™ is a natural, research based formula containing Quail egg powder, originally discovered in France, that starts to work within 15 minutes to support the body’s response to allergens, without any unwanted side effects such, as drowsiness. Chew slowly when exposed to allergens including pollens, grasses, pet dander, dust mites and moulds.