Didn't stop worms after Fluoxetine in dogs

The FDA has received 44 reports of didn't stop worms in dogs after Fluoxetine. That is 1.7% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

44Reports
14%Marked serious
6.8%Recovered
0.0%Died or euthanised
151 daysTypical onset
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How soon it started

Same day
1 6.7%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
2 13%
Over a month
12 80%

How the animals did

Recovered with lasting effects
3 6.8%
Still unwell when reported
11 25%
Not known
30 68%

Problems reported at the same time

Anxiety
10 23%
Didn't work as expected
7 16%
Diarrhea
6 14%
Behaviour change
5 11%
Loss of appetite
3 6.8%
Dental disease
3 6.8%
Itching
2 4.5%
Weight gain
2 4.5%

Age of the animals

Under 1 year
1
1–3 years
15
4–7 years
8
8–11 years
15
12+ years
5

About this medicine

Fluoxetine treats anxiety and behaviour problems.

Questions owners ask

Can Fluoxetine cause didn't stop worms in dogs?
44 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 151 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).

Didn't stop worms with similar medicines

All reported side effects of Fluoxetine in dogs · Medicines most reported with didn't stop worms