Vomiting after Doxycycline in cats

38 reports to the FDA describe vomiting in cats given Doxycycline. That is 15% of all reports for this medicine, compared with 18% across reports for all cat medicines.

38Reports

58%Marked serious

26%Recovered

34%Died or euthanised

6 daysTypical onset

How soon it started

Same day

7 22%

1–2 days

6 19%

3–7 days

4 13%

1–4 weeks

10 31%

Over a month

5 16%

How the animals did

Recovered

10 26%

Still unwell when reported

11 29%

Died

5 13%

Euthanised

8 21%

Not known

4 11%

Problems reported at the same time

17 45%

15 39%

13 34%

10 26%

10 26%

Leucocytosis

6 16%

Fever

5 13%

Weakness

5 13%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Doxycycline treats bacterial and tick-borne infections.

Questions owners ask

Can Doxycycline cause vomiting in cats?: 38 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 6 days 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).

Vomiting with similar medicines

Vomiting after Cefovecin (Convenia) 1,400 reports · 16% of its reports
Vomiting after Amoxicillin + Clavulanate (Clavamox) 683 reports · 29% of its reports
Vomiting after Enrofloxacin (Baytril) 150 reports · 9.5% of its reports
Vomiting after Amoxicillin 132 reports · 26% of its reports
Vomiting after Metronidazole 79 reports · 20% of its reports

All reported side effects of Doxycycline in cats · Medicines most reported with vomiting