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Writer's pictureBryanna Tanase

Horse Medicines, Their Uses, and How to Administer Properly

As someone who has never had the opportunity to administer medicine to a horse because I am not responsible for their medical care, I realized how little I actually knew about the subject and decided to take some time to educate myself. I hope this article helps anyone who struggles with this like me, or anyone that needs a quick reference. Because there are so many medicines available, I will provide information on the most commonly used ones that are USEF approved as I feel this will be most helpful.



Non-steroidal Anti-Inflammatories (NSAID'S): reduce inflammation, control pain, control fever

  • phenylbutazone aka bute- available in pills, paste, paste. powder, or as injections. Inject only in the veins and is the most likely to cause ulcers when given in high doses

  • Flunixin megalumine aka Banamine- available in paste or injections, used for colic and muscle pain, takes 30-40 minutes to work, and like bute should only be given intravenously

  • natural anti-inflammatories- grape seed extract, devil's claw, yucca





Antibiotics: treat infections, best prescribed based on culture and sensitivity due to resistance, frequency of administration varies between types


Oral antibiotics

  • TMS, SMZ, Tucoprim, Uniprim- most commonly used antibiotics for horses, has the most issues with resistance but is inexpensive and has few side effects

  • Doxycycline- both anti-inflammatory and antibiotic, for tick-borne diseases and susceptible infections

  • Metronidazole- bitter, given rectally to avoid anorexia, used for infections caused by anaerobic bacteria,

Injectable Antibiotics

  • Gentamicin- used for gram negative bacteria (high resistance, no/thin cell wall), can give intravenously or in muscle, may sting

  • Ceftiofur (Naxcel)- expensive but has few side effects, used to treat gram positive bacterial infections (thick cell wall), and has broad spectrum coverage

  • Oxytetracycline- used for Lyme Disease and Antiplasmosis, given through IV



Antifungal and Antiprotozoal Medicines : treat fungal and protozoan bacteria infections

  • Griseofulvin- given orally as a powder

  • Ponazuril (Marquis)- used to treat EPM (Equine Protozoal Myeloencephalitis)

Therapeutic Steroids

  • Dexamethazone - used for allergies (hives, heaves), anaphylactic reactions. severe inflammation, spinal or brain trauma. Injected in muscle or vein or given as powder

  • Triaminoclone (Kenalog, Vetalog)- used on joints and protects cartilage, given orally or by injection

  • Estrogen/Estradiol- used to treat locking stifles, given as injection



Anti-Ulcer Medications

  • Omepraxole (UlcerGard)- FDA approved, available in a compounded powder, given as a oral paste

Eye Medications - tubes look similar, so consult vet before use to ensure the right treatment is used

  • Triple Antibiotic: Neomycin/Polymyxin B/Bacitracin- used to treat corneal ulcers and conjunctivitis, available as ointment or drops

  • Hydrocortizone and dexamethazone- steroid ointment or drops used for uveitis or conjunctivitis

  • Atropine- available as ointment or drops, relieves pain associated with constricted pupil


Joint Support

  • Polysulfated glycosaminoglycans – PSGAGs (Adequan®)- given in muscle for the joints, ligaments, and tendons, can also give in the artery together with a corticosteroid

  • Hyaluronic acid (Legend®, Hyalovet®, Hyvisc®, Hylartin V®)- given in the vein for the joints

Diuretics

  • Acetazolamide- used to treat hyperkalemic periodic paralysis and glaucoma

  • Furosemide (Lasix®, Salix®)- used to treat limb edema and congestive heart failure

Topical and Miscellaneous Drugs

Pergolide- comes in a powder, used to treat Cushing's Disease

Tiludronate (Tildren®)- prevents bone from self-destructing, used to treat navicular and similar diseases

Vitamin B-12- appetite stimulant

Zinc oxide- sunscreen, sooth irritated skin

Kopertox- thrush treatment


Dewormer Tips

  • Look at the chemical names as the brand names can be mixed up



When giving any kind of medication, always take temperature first, check the expiration date, and call your vet if you need help or you see changes in your horse, and always use them as instructed. Pills and powder can be crushed and added to feed, or dissolved in a syringe and given as a paste, When giving pastes, check that the dose tab is set so the whole tube is not given. Double check dosages before administering. When giving injections, always use a new needle and sterile syringe. Intravenous injections should only be given by a vet to avoid complications. Intramuscular injections can be given in the neck or hind leg. When giving eye medication, make sure not to touch the eye with the tip or applicator.


I hope this was a helpful reference and that you can use it to help you take better care of your horses! I know I certainly learned a lot writing this!


Until next time,

Bry


Sources

Images from Pixabay, Google, and Pexels

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