Sulfadiazine and Trimethoprim (SZTM) – Medicating Ingredient Brochure
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Status: Veterinary prescription required for approved claims
Date of revision: March 2021
| Approved livestock species | Approved claim(s) (abbreviated)Table note 1 |
Withdrawal time | Name of approved brand(s) |
|---|---|---|---|
| Horses |
|
7 days (meat) |
|
Horses
| Approved claims | Name of approved brand(s) | Drug concentration in DIN product |
|---|---|---|
| Claim 1 |
|
|
Claim 1
For the treatment of the following infections when caused by susceptible organisms:
- Acute strangles
- Other respiratory infections
- Wound and postoperative infections
Level of medicating ingredient in a complete feed
The dose of sulfadiazine and trimethoprim (granules or powder) for horses, ponies or foals is 3.75 g per 50 kg body weight daily.
Additional information (not to appear on feed labels)
For feed manufacturers
- Feed labels must state the specific drug levels of both sulfadiazine and trimethoprim used in the feed.
Directions for use in a complete feed
This livestock feed contains a medically important antibiotic. To reduce the development of antimicrobial resistance and maintain effectiveness, use this antibiotic prudently.
Treatment should be given once daily until 2-3 days after the animal becomes asymptomatic. The usual course of treatment is no longer than 7 consecutive days.
Additional information (not to appear on feed labels)
For feed manufacturers
- Feed labels must state the specific daily feed rate and the body weight of the horses, ponies or foals being treated.
- The sulfadiazine and trimethoprim (granules or powder) should be mixed with a small amount of palatable feed (top dress application).
Warning
- Treated animals must not be slaughtered for use in food for at least 7 days after the latest treatment with this drug.
- Keep out of reach of children.
Caution
- Should not be administered to pregnant mares as the effects of this product, when used as recommended, have not been determined on the unborn foal.
Additional information to be added as a note to feed labels
Note
- Sulfadiazine and trimethoprim (granules or powder) should not be used in horses showing marked liver parenchymal damage or blood dyscrasias, nor in those with a history of sulfonamide sensitivity.
- If the treated horse does not consume the medication in total, then parenteral or individual oral dosage with an alternative product should be considered.
Accepted Compatibilities
Nil
- Date modified: