Amitriptyline side effects in cats

56 reports sent to the FDA between 2006 and 2026 involve Amitriptyline in cats. The most reported problems were vomiting, loss of appetite, lethargy. 39% were marked serious.

56Reports
39%Marked serious
8.9%Only medicine involved
32%Recovered
8.9%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Vomiting
18 32%
Loss of appetite
13 23%
Lethargy
12 21%
Vocalising
7 13%
Behaviour change
7 13%
Hair loss
6 11%
Itching
6 11%
Weight loss
5 8.9%
Kidney problems
5 8.9%
Diarrhea
5 8.9%
Wobbliness (ataxia)
5 8.9%
Breathing problems
4 7.1%
Inappropriate urination
4 7.1%
Skin rash or irritation
4 7.1%
Application site reaction
4 7.1%

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 cat still getting fleas or heartworm), not about a side effect.

Didn't work as expected
5 8.9%
Didn't stop fleas
2 3.6%
Didn't stop mites
1 1.8%

How soon problems started

Same day
11 29%
1–2 days
4 11%
3–7 days
5 13%
1–4 weeks
7 18%
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
18 32%
Still unwell when reported
18 32%
Died
4 7.1%
Euthanised
1 1.8%
Not known
15 27%

Breeds named most often

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

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