Horse Heave Ho- Sugar-Free Apple. Heave Ho may be used in horses that need help breathing or have chronically allergic airway, COPD and/or Asthma. Heave Ho contains natural herbs, high dose vitamin E and balanced minerals. One Scoop in the morning and evening for the first 7 days, then one scoop in the morning after that. Most horses respond rapidly in 10-14 days with improved respiratory rates, less cough, and calmer attitudes from being able to breath better.