Vomiting after Acetylcysteine in dogs

The FDA has received 34 reports of vomiting in dogs after Acetylcysteine. That is 56% of all reports for this medicine, compared with 28% across reports for all dog medicines, so it is reported unusually often with this medicine.

34Reports
91%Marked serious
2.9%Recovered
74%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
7 23%
1–2 days
6 20%
3–7 days
3 10%
1–4 weeks
10 33%
Over a month
4 13%

How the animals did

Recovered
1 2.9%
Still unwell when reported
8 24%
Died
12 35%
Euthanised
13 38%

Problems reported at the same time

25 74%
22 65%
Tachycardia
10 29%
Hypoglycaemia
9 26%

Age of the animals

Under 1 year
0
1–3 years
9
4–7 years
10
8–11 years
7
12+ years
6

About this medicine

Type: medicine.

Questions owners ask

Can Acetylcysteine cause vomiting in dogs?
34 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 7 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

All reported side effects of Acetylcysteine in dogs · Medicines most reported with vomiting