Wendals Herbs Respiration – natural respiratory system assistance. Helps naturally support normal, mucus-free lungs. May be beneficial for seasonal respiratory issues. Contains fennel seed, garlic, liquorice, marjoram, nettles and thyme. Give average horse 2-3 scoops daily. 2.2 lbs lasts about 28 days. Safe use in pregnant animals or animals intended for breeding has not been proven.