Methadone side effects in cats
98 reports sent to the FDA between 2013 and 2026 involve Methadone in cats. The most reported problems were loss of appetite, lethargy, behaviour change. 67% were marked serious.
98Reports
67%Marked serious
0.0%Only medicine involved
29%Recovered
22%Died or euthanised
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About this medicine
Type: medicine.
Most reported side effects
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.
How soon problems started
Time from the first dose to the first sign, where both dates were reported (87 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Domestic Shorthair 53 reports
- Domestic Longhair 13 reports
- Ragdoll 5 reports
- Cat (other) 3 reports
- Russian 2 reports
- American Shorthair 2 reports
- Domestic Mediumhair 2 reports
- Burmilla 2 reports
- British Cat 1 reports
- Persian 1 reports
Other medicines for cats
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