Biologically, coughing is a natural protective reflex that helps keep the airways clear. Nerve endings in the mucous membrane of the airways send signals to the brain in case of irritation, which triggers the cough reflex to remove inhaled particles or inflammatory secretions.
If a horse coughs due to dust, it is usually the result of mechanical irritation. Inhaled dust, mold spores, or hay particles irritate the airway lining. In such cases, the symptom may even disappear if the environment improves and dust exposure decreases, but this is already a clear indication that the horse’s airways are overloaded.
In the case of allergic coughing in horses, an immunological overreaction occurs. As a result of allergens, inflammatory mediators – such as histamine – are released, causing mucosal swelling and increased mucus production. This often appears in the form of seasonal allergy, and although it may cause milder symptoms, it is no longer just a matter of mechanical irritation.
In the case of heaves (equine asthma), however, the process is deeper. Chronic inflammation develops in the bronchial walls, the smooth muscles thicken and become spasmodic, and the mucus becomes thicker and harder to clear. The airways narrow, and air becomes trapped especially during exhalation, which leads to abdominal breathing and the characteristic “heave line”. At this stage, we are already talking about structural changes, which is why this condition is not curable, only manageable with proper care.
How can we tell that it’s no longer “just a slight cough”? If a horse’s coughing is recurrent, worsens during exercise, performance decreases, the horse tires more quickly, resting respiratory rate is elevated, or exhalation is visibly labored, then veterinary examination is necessary. Diagnosis can be refined through auscultation, endoscopic examination, or airway sampling.
The treatment of heaves in horses is based on three pillars: environment, medical treatment, and long-term management. The most important factors are dust-free feeding, soaking or steaming hay, proper stable ventilation, minimizing ammonia, dust-free bedding, and as much time in fresh air as possible. In more severe cases, bronchodilators and anti-inflammatory medications – often corticosteroids – may also be required, even in the form of inhalation therapy. However, it is important to note that medication does not replace proper management conditions.
In cases of upper airway irritation and allergy-related coughing, Meglio Resp Elixir provides targeted support. It helps soothe the airway mucosa, supports the breakdown of accumulated mucus, and promotes the natural cleansing of the airways – with hundreds of feedbacks confirming its outstanding effectiveness in respiratory conditions. Its herbal and functional ingredients reduce irritation and support immune system balance. It can be useful not only in cases of acute coughing, but may also play an important role in prevention, especially in horses sensitive to dust or pollen. Protecting the airway mucosa and keeping inflammation under control helps reduce the risk of recurrent irritation developing into chronic respiratory disease or heaves.
Equine respiratory health is not a seasonal concern, but a consistent approach – where proper management, conscious care, and targeted support together ensure long-term respiratory well-being.
In the photo, Papillon Van’T Janshof, a Meglio customer, is shining, who occasionally receives our Air+Energy feed.
