Over the counter diphenhydramine (Benadryl) or comparable antihistamines can be used in an emergency for horses with severe hypersensitivity or allergy. Prolonged use is not advised.
What antihistamines are safe for horses?
They are generally considered safe, but are of questionable value. Extra-label use of human antihistamines is also common in equine practice. Examples of these medications include hydroxyzine, diphenhydramine (Benadryl) and cetirizine, among many others.
What can you give a horse for allergies?
Your veterinarian can prescribe several medications to calm an allergic response. Dexamethasone or other corticosteroids are effective for treating severe reactions. If your horse is only moderately itchy or has hives, antihistamines can be useful.
Does Benadryl make horses sleepy?
However, Benadryl or its generic equivalent, diphenhydramine, can cause excessive drowsiness. The manufacturers of the equine anithistamine product Tri-Hist add pseudoephedrine hydrochloride, which is a decongestant but also has mild stimulatory properties that help avoid the antihistamine fog.
How do you treat hives on a horse?
How are hives treated? Many cases of urticaria resolve in 24-72 hours. Other cases may resolve only to reoccur, while others will persist. For acute cases (seen by your veterinarian in the first 24 hours) a single administration of a short-acting corticosteroid will usually resolve the lesions.
How much antihistamine should I give my horse?
Assuming you cannot contact your vet: For hives or possible allergic airway disease (heaves), for a 1000 lb horse, give 5-10 tabs of 25mg diphenydramine crushed up and mixed in water and dosed in a syringe orally (by mouth).
Can horses have allergic reactions?
Allergic reactions can be triggered in horses by many things–environmental allergens such as dust, pollen, and mold; insect bites; substances in feeds; things put on or touched by the horse; or injections.
How do you know if your horse has allergies?
Some of the horse allergy symptoms include:
- itchy, watery eyes.
- runny nose.
- stuffy nose.
What are the symptoms of allergies in horses?
The most common types of allergic reactions in horses show up in the skin or respiratory system. In the skin, you may notice your horse vigorously itching an area or overcome with hives. For a respiratory reaction, your horse may begin coughing, sneezing or wheezing, but without nasal discharge.
Why does my horse have welts?
They often develop and disappear suddenly. The most common causes of hives in horses are insect bites or stings, medications, and exposure to allergens. Other potential causes include vasculitis (inflammation of the blood vessels of the skin), food allergy, ringworm, and pemphigus foliaceus.
What will cause a horse to cough?
The most likely causes of a cough in an adult horse are viral respiratory tract infection, pharyngitis, an allergic respiratory disease (RAO or SPAOPD), pneumonia, IAD, and EIPH. With the threat of all of these illnesses, you should always consult your veterinarian if your horse develops a cough.
What causes head shaking syndrome in horses?
Headshaking behavior is thought to be caused by overactivity of branches of the trigeminal nerve that supply sensation to the face and muzzle. A horse’s behavioral reflex causes him to flip his head, snort or sneeze, rub his head, or take evasive action.
Can I give my horse Zyrtec?
It is concluded that cetirizine in doses of 0.2-0.4 mg/kg bw administered at 12 h intervals exhibits favourable pharmacokinetic and pharmacodynamic properties without causing visible side effects, and the drug may therefore be a useful antihistamine in equine medicine.
Why does my horse have bumps all over?
The most common reason that horses develop many small bumps on their skin is allergic hives (urticaria), but there are other causes that should also be considered. If the bumps appeared very suddenly and are distributed all over the body, it is likely true hives.
What causes bumps on horse’s skin?
What causes them? Many things can cause hives, including insect bites, pollens, food allergies, medications or direct contact with a variety of materials. How do I identify them? Also known as urticaria, hives are fluid-filled, raised swellings on a horse’s skin.
Why does my horse have a lump on his neck?
In the normal horse, the larynx, thyroid gland, salivary glands and lymph nodes all feel like firm bumps in this area. These structures can enlarge or change shape in both health and disease and only your vet can really define what is normal. … Benign thyroid enlargement is common in older horses.