Tulathromycin
AntibioticsA long-acting macrolide antibiotic (of the triamilide subclass) that binds to the 50S ribosomal subunit, inhibiting protein synthesis. A single dose provides an effective concentration in lung tissue for days.
Pharmacological information
A class-level scientific overview for general reference — no doses. The ultimate reference is always the locally approved product leaflet and consultation with a veterinarian.
Mechanism of action
A long-acting macrolide antibiotic (of the triamilide subclass) that binds to the 50S ribosomal subunit, inhibiting protein synthesis. A single dose provides an effective concentration in lung tissue for days.
Indications
- Respiratory disease in cattle and pigs caused by susceptible bacteria (Mannheimia, Pasteurella, Mycoplasma)
- Bacterial foot rot in cattle
Contraindications & warnings
- Not to be given to horses — macrolides may cause fatal colitis
- Hypersensitivity to macrolides
Drug interactions
- Antagonism with lincosamides and phenicols due to competition for the same binding site
Prudent use of antibiotics
Macrolides are classified as "highest-priority critically important" by the WHO; they are reserved for appropriate cases and prescribed based on susceptibility testing where possible.
Withdrawal periods
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 50 days | — | — |
| Species | Meat | Milk | Eggs |
|---|---|---|---|
| Cattle | 22 days | — | — |
| Sheep | 16 days | — | — |
Recorded adverse effects
openFDA veterinary reports — the numbers are report counts, not a severity rate.
Related products
Sources
- •Withdrawal periods: UK Veterinary Medicines Directorate (VMD).
- •European Medicines Agency (EMA) — Veterinary medicines
- •Merck Veterinary Manual — Pharmacology
- •World Health Organization — Critically Important Antimicrobials (WHO CIA)
- •Always verify the locally approved leaflet and consult a veterinarian.