Penicillin side effects in cats
110 reports sent to the FDA between 2012 and 2026 involve Penicillin in cats. The most reported problems were loss of appetite, lethargy, wobbliness (ataxia). 59% were marked serious.
110Reports
59%Marked serious
0.0%Only medicine involved
25%Recovered
28%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 (104 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Domestic Shorthair 70 reports
- Domestic Longhair 18 reports
- Domestic Mediumhair 5 reports
- Persian 2 reports
- Maine Coon 1 reports
- Domestic 1 reports
- Siamese 1 reports
- Abyssinian Cat 1 reports
- Cat (other) 1 reports
Other medicines for cats
Ketamine3,234 reports · 33% seriousButorphanol2,241 reports · 47% seriousIsoflurane2,031 reports · 43% seriousTiletamine + Zolazepam1,658 reports · 24% seriousMethylprednisolone1,607 reports · 41% seriousPropofol1,170 reports · 41% seriousAtipamezole1,037 reports · 35% seriousMidazolam748 reports · 48% serious