Fever after Sulfadimethoxine in cats

25 reports to the FDA describe fever in cats given Sulfadimethoxine. That is 7.9% of all reports for this medicine, compared with 3.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

25Reports
12%Marked serious
8.0%Recovered
16%Died or euthanised
–Typical onset
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How the animals did

Recovered
2 8.0%
Still unwell when reported
3 12%
Died
4 16%
Not known
16 64%

Problems reported at the same time

14 56%
6 24%
Blood problems
5 20%
Leucocytosis
4 16%
Lymphopenia
3 12%

Age of the animals

Under 1 year
18
1–3 years
3
4–7 years
2
8–11 years
0
12+ years
0

About this medicine

Type: medicine.

Questions owners ask

Can Sulfadimethoxine cause fever in cats?
25 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.
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).

Fever with similar medicines

All reported side effects of Sulfadimethoxine in cats · Medicines most reported with fever