Apply 2-3 sprays of Sinus Defense under the tongue 2-3 times daily. Adjust number of sprays and applications as needed. For example, if you know you have had a mold exposure, increase dosage or frequency of use. Do not eat, drink, or brush teeth for 15 minutes after use. Children under 12: Consult a Health Care Professional prior to use. Bottle lasts for 6-8 weeks depending on number of sprays used. NOTE: Sinus Defense does not require physician allergy testing and administration. It can be used prior to or in conjunction with allergy shots or immunotherapy, where specific antigens are introduced to the body, enabling it to develop antibodies over time (several weeks). Sinus defense begins to target antigens immediately to take advantage of our immediate natural T cell immunity.