Is Tilmicosin safe for dogs and cats?

What is tilmicosin?

CAS number

108050-54-0

Molecular formula

C46H80N2O13

Molecular weight

869.13 g/mol

SMILES

CCC1CC(CC(C(C(CC(=O)O1)OC2CC(C(C(O2)C)OC3CC(C(C(O3)C)N(C)C)O)N(C)C)C)OC)C

PubChem CID

656654

Regulatory consensus

2 regulatory and scientific bodies have classified Tilmicosin. The classifications differ — that's the data.

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where pets encounter tilmicosin

• Veterinary Medicine

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Tilmicosin:

• Tulathromycin (wider safety margin)
  Trade-offs: Non-halogenated; no toxic combustion gases (HCl, dioxins); requires higher loading (40-65% by weight vs 5-15% for halogenated FRs); affects material properties (density, flexibility, processability); cost-effective at scale.
  Relative cost: 1.2-2×
• Florfenicol
  Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
  Relative cost: 1.2-2×

Frequently asked questions