Take action

Treatment for coughing depends on the initial cause, which is why tests are recommended. The treatment plan may include antibiotics, but in the case of a viral cause anti-inflammatories and rest may be all that is required.

Any horse who is coughing should be rested — he may struggle to breathe during exercise and performing exercise may even prolong his recovery.

If asthma is diagnosed the initial aim is to reduce the inflammation in the airways so that they become more open. This is done through the use of steroids and bronchodilators, which allow more air to get into the lungs and encourage the clearance of mucus and other debris.

During an acute episode of respiratory distress, steroids may be given systemically (by injection or by mouth) to reduce the severe inflammation that is occurring. However, providing steroids through an inhaler is usually the preferred treatment option as this is more effective in the long term and is associated with fewer side effects.

A custom-made product called the Aservo Equihaler is now available for the management of equine asthma. This specialised inhaler fits comfortably into the left nostril of the horse, delivering the drug in a mist form so that it can get to work in the lung tissue. The device is easy to use and well-tolerated by horses, ensuring that the correct dose is given and the 10-day course can be completed.

Asthma is difficult to manage longterm, however, unless changes are made to your horse’s environment (see below).

There are also some supplements that may help to improve your horse’s breathing. These generally contain herbs that encourage clear airways and help to boost the immune system.