 Bronchodilatation is already maximized in the exercising horse, therefore bronchodilatory agents such as ipratropium, albuterol, or clenbuterol are not effective in reducing EIPH.Coagulation dysfunction is not a cause of EIPH, and anticoagulatory agents, including carbazochrome salicylate, aspirin, Premarin, Amicar, and vitamin K, are not effective in reducing EIPH, and in some cases may worsen it.Omega-3 fatty acids (DHA and EPA reduce EIPH, presumably via increasing the functionality of the white blood cells (WBCs) in removing the blood from the lungs.