Doramectin side effects in dogs

103 reports sent to the FDA between 1997 and 2025 involve Doramectin in dogs. The most reported problems were accidental exposure, eye or vision problems, wobbliness (ataxia). 24% were marked serious.

103Reports
24%Marked serious
83%Only medicine involved
11%Recovered
16%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

22 21%
21 20%
Lethargy
18 17%
Seizures
14 14%
Drooling
9 8.7%
Loss of appetite
8 7.8%
Disorientation
7 6.8%
Weakness
6 5.8%
Neurological signs
5 4.9%
Itching
5 4.9%
No sign
4 3.9%
Unresponsive
4 3.9%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
6 5.8%
Didn't prevent heartworm
4 3.9%
Didn't stop worms
3 2.9%
Didn't stop mites
2 1.9%

How soon problems started

Same day
16 42%
1–2 days
8 21%
3–7 days
1 2.6%
1–4 weeks
2 5.3%
Over a month
11 29%

Time from the first dose to the first sign, where both dates were reported (38 reports).

How the animals did

Recovered
11 11%
Still unwell when reported
17 17%
Died
16 16%
Not known
59 57%

Breeds named most often

Popular breeds appear more often because there are more of them.

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