Horner's syndrome after Florfenicol + Mometasone + Terbinafine in cats

The FDA has received 174 reports of horner's syndrome in cats after Florfenicol + Mometasone + Terbinafine. That is 25% of all reports for this medicine, compared with 0.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

174Reports

84%Marked serious

11%Recovered

4.0%Died or euthanised

1 daysTypical onset

How soon it started

Same day

70 46%

1–2 days

45 30%

3–7 days

16 11%

1–4 weeks

12 7.9%

Over a month

9 5.9%

How the animals did

Recovered

16 9.2%

Recovered with lasting effects

4 2.3%

Still unwell when reported

29 17%

Died

1 0.6%

Euthanised

6 3.4%

Not known

118 68%

Problems reported at the same time

Wobbliness (ataxia)

85 49%

Loss of appetite

75 43%

Third eyelid protrusion

54 31%

Head tilt - ear disorder

43 25%

34 20%

31 18%

25 14%

24 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Florfenicol + Mometasone + Terbinafine cause horner's syndrome in cats?: 174 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?: In half of the reports with dates, it started within 1 day of the first dose.
What should I do?: Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Horner's syndrome with similar medicines

Horner's syndrome after Betamethasone + Florfenicol + Terbinafine 68 reports · 26% of its reports

All reported side effects of Florfenicol + Mometasone + Terbinafine in cats · Medicines most reported with horner's syndrome