Diarrhea after Tylosin in dogs

The FDA has received 95 reports of diarrhea in dogs after Tylosin. That is 15% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

95Reports
35%Marked serious
20%Recovered
11%Died or euthanised
16 daysTypical onset
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How soon it started

Same day
13 20%
1–2 days
5 7.8%
3–7 days
9 14%
1–4 weeks
11 17%
Over a month
26 41%

How the animals did

Recovered
18 19%
Recovered with lasting effects
1 1.1%
Still unwell when reported
31 33%
Died
5 5.3%
Euthanised
5 5.3%
Not known
35 37%

Problems reported at the same time

Age of the animals

Under 1 year
9
1–3 years
24
4–7 years
18
8–11 years
19
12+ years
22

About this medicine

Type: medicine.

Questions owners ask

Can Tylosin cause diarrhea in dogs?
95 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 16 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).

Diarrhea with similar medicines

All reported side effects of Tylosin in dogs · Medicines most reported with diarrhea