top of page

Clearing Respiratory Mucus in Horses with Acetylcysteine

Respiratory issues like sinusitis, pleuropneumonia, and inflammatory airway disease can cause excess mucus production and coughing in horses. Acetylcysteine is a medicine that can help thin out thick mucus secretions and provide relief. Keep reading to learn more about using acetylcysteine injections to clear mucus from the respiratory tract in horses.

What is Acetylcysteine?

Acetylcysteine, also known by the brand name Mucomyst, is a medication used to help clear mucus. It works by breaking up mucoproteins, the compounds that give mucus its thick, gluey texture. By making mucus less viscous, acetylcysteine helps improve mucociliary clearance and eases associated respiratory symptoms.

Acetylcysteine can be given orally, but is also available as an injectable solution for use in veterinary medicine. Injectable acetylcysteine can provide faster relief than oral forms for acute respiratory conditions in horses.

Using Acetylcysteine Injections in Horses

Injectable acetylcysteine is given intravenously or intramuscularly to horses exhibiting excess mucus production and coughing. It is used for upper and lower airway conditions where mucus accumulation leads to breathing difficulties, including:

  • Sinusitis

  • Pleuropneumonia

  • Bronchitis

  • Recurrent airway obstruction (heaves)

Veterinarians may administer acetylcysteine injections when horses show signs of respiratory distress, such as nasal discharge, coughing, and increased respiratory effort. Multi-day therapy is common, with injections given 1-2 times daily. Dose is based on the horse’s weight, with heavier animals needing more acetylcysteine to effectively liquefy mucus. Improvement is typically seen within 1-2 days. Injectable acetylcysteine is generally well tolerated, with few side effects in horses.

Benefits of Injectable Acetylcysteine

Key benefits of using injectable acetylcysteine over oral administration for clearing airway mucus in horses include:

  • Faster therapeutic effect than oral forms

  • Increased mucus penetration and cough relief

  • Allows precise dosing based on horse’s body weight

  • Bypasses reduced gastrointestinal absorption in ill horses

  • Less potential for gastric irritation or diarrhea

  • Easier to administer to resistant or distressed horses

By rapidly thinning mucus secretions, acetylcysteine injections can provide prompt relief and improve recovery time. This makes it a useful treatment option for acute respiratory illness resulting in mucus accumulation in horses.


Injectable acetylcysteine is an effective way to quickly clear excess mucus from the respiratory tract in horses. Under veterinary supervision, it can be used to relieve mucus-related coughing and ease breathing difficulties from upper and lower airway disease. Discuss with your vet if acetylcysteine injections may benefit your horse.

Click Here Buy Acetylcysteine

87 views0 comments

Bình luận

bottom of page