All natural cough formula. Usually one dose will stop a horse from coughing all day. Safe for pre-event/race/performance; will not test. Cost effective; you only use 1/4th as much Air Power as you do most other products. The world's most effective cough formula and it is all natural.

Air Power, 34 oz (Equine Cough Formula) Air Power Helps a Horse's Coughing!