Didn't stop worms after Tramadol in dogs

The FDA has received 40 reports of didn't stop worms in dogs after Tramadol. That is 1.1% 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.

40Reports
20%Marked serious
7.5%Recovered
0.0%Died or euthanised
241 daysTypical onset
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How soon it started

Same day
0 0.0%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
2 11%
Over a month
16 89%

How the animals did

Recovered
1 2.5%
Recovered with lasting effects
2 5.0%
Still unwell when reported
8 20%
Not known
29 73%

Problems reported at the same time

Didn't work as expected
25 63%
Diarrhea
4 10%
Loose stool
3 7.5%
Didn't prevent heartworm
3 7.5%
Vomiting
3 7.5%
Weight loss
2 5.0%
Liver problems
2 5.0%
Weight gain
2 5.0%

Age of the animals

Under 1 year
1
1–3 years
5
4–7 years
9
8–11 years
13
12+ years
11

About this medicine

Type: medicine.

Questions owners ask

Can Tramadol cause didn't stop worms in dogs?
40 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 241 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 Tramadol in dogs · Medicines most reported with didn't stop worms