You can buy it over-the-counter, and it can be taken daily during allergy season if you follow the directions on the label. (abckidsinc.com)
Cut out all dairy completely in preparation for allergy season. (mindbodygreen.com)
Most people use it three or four times a day, but at the height of allergy season, you may want to use it more frequently to get symptoms under control. (mindbodygreen.com)