You asked: What is sulfamethoxazole and trimethoprim used for in horses?

Trimethoprim/sulfonamide (TMPS) combinations are used for the treatment of various diseases caused by gram-positive and gram-negative bacteria, including infections of the respiratory tract, urogenital tract, alimentary tract, skin joints and wounds.

What does sulfamethoxazole treat in horses?

Trimethoprim + sulfamethoxazole is used for treatment of UTIs, skin and soft tissue infections, prostate infections, pneumonia, and CNS infections. In horses, they have been used for respiratory infections, joint infections, abdominal infections, soft tissue infections, and infections of the CNS.

What bacteria does sulfamethoxazole trimethoprim treat?


  • infection due to the bacteria Vibrio cholerae.
  • typhoid fever.
  • paratyphoid fever.
  • intestine infection due to the Shigella bacteria.
  • prevention of plague following exposure to plague.
  • infection due to a Brucella bacteria.

What do SMZ do for horses?

An oral antibiotic often used in horses is Sulfamethoxazole and trimethoprim (SMZ). Sulfamethoxazole works as an antibiotic by inhibiting bacterial synthesis of dihydrolic acid by competing with para-aminobenzoic acid (PABA).

IT IS INTERESTING:  Your question: Can horses have stripes?

What is the best antibiotic for horses?

Antibiotics Used for Horses

Oral antibiotics routinely used in adult horses (except for some EPM drugs that only kill protozoa) are doxycycline and combinations of trimethoprim and a sulfa drug. Other types of oral antibiotics carry a higher risk of causing colic, severe diarrhea, and even death.

How much sulfamethoxazole do you give a horse?

Trimethoprim sulfa commonly comes in 960mg tablets. The dose range for horses is 15-30 mg/kg. Generally, 10 tablets administered orally for a 1000lb horse is effective. This medication is given twice a day (every 12 hours) and is best absorbed if given without food.

How long should a horse be on antibiotics?

Often, the medication must be given two or three times a day, for five days or a week at minimum. Sometimes that treatment needs to go on for months. Usually only one antibiotic is prescribed. In less common cases, two or even three at the same time may be necessary.

Does sulfamethoxazole have penicillin in it?

Yes, Bactrim DS contains sulfamethoxazole and trimethoprim. It is in no way related to Penicillin. It is safe to take if you are allergic to Penicillin. Bactrim DS is an antibiotic and belongs to a drug class called sulfonamides.

How does sulfamethoxazole and trimethoprim work?

Sulfamethoxazole stops bacteria from making dihydrofolic acid and trimethoprim prevents the formation of tetrahydrofolic acid; both significant steps in the formation of nucleic acids and proteins essential to many bacteria. The combination of sulfamethoxazole/trimethoprim kills bacteria.

What are the side effects of taking sulfamethoxazole?


  • Black, tarry stools.
  • blistering, peeling, or loosening of the skin.
  • changes in skin color.
  • chest pain or tightness.
  • cough or hoarseness.
  • general feeling of tiredness or weakness.
  • headache.
  • itching, skin rash.
IT IS INTERESTING:  What do worms look like in horse manure?

How much does SMZ cost?

SMZ-TMP DS (sulfamethoxazole/trimethoprim) is a member of the sulfonamides drug class and is commonly used for Acne, Bacterial Infection, Bacterial Skin Infection, and others.

Oral Tablet.

Quantity Per unit Price
500 $0.39 $194.25

How do horses get respiratory infection?

Coughing horses disperse the virus into the air, and other horses are infected when they inhale the virus particles. The virus attacks and damages the lining of the respiratory tract. It takes three weeks for the lining of the respiratory tract to regenerate, which predisposes the tract to bacterial infections.

Does Tractor Supply sell SMZ?

Smz Sulfamethoxazole Trimethoprim Tablet Usp For Dogs And Horses At Tractor Supply Co.

What can I give my horse for respiratory infection?

Treatment of mild to moderate cases of pneumonia can be successful, and typically includes antibiotics, anti-inflammatories, and supportive care. In more severe cases, treatment can be challenging as permanent damage can be done to the lung tissue.

What is the best anti inflammatory for horses?

Non-steroidal anti-inflammatory drugs (NSAIDs) are the most commonly used drug for pain management in horses. Examples include bute (e.g. Equipalazone), flunixin (e.g. Equinixin or Finadyne) and meloxicam (e.g. Metacam). These medications relieve pain and help in the reduction of inflammation and fever.

Do you need a prescription for horse antibiotics?

All antibiotics for livestock will soon require a vet’s prescription.