Swelling after Diphenhydramine in cats
The FDA has received 54 reports of swelling in cats after Diphenhydramine. That is 15% of all reports for this medicine, compared with 1.9% across reports for all cat medicines, so it is reported unusually often with this medicine.
54Reports
80%Marked serious
30%Recovered
39%Died or euthanised
Same dayTypical onset
Sponsored
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Type: medicine.
Questions owners ask
- Can Diphenhydramine cause swelling in cats?
- 54 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 the same day 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).
Swelling with similar medicines
- Swelling after Ketamine 121 reports · 3.7% of its reports
- Swelling after Butorphanol 110 reports · 4.9% of its reports
- Swelling after Isoflurane 106 reports · 5.2% of its reports
- Swelling after Tiletamine + Zolazepam 135 reports · 8.1% of its reports
- Swelling after Methylprednisolone 119 reports · 7.4% of its reports
- Swelling after Propofol 80 reports · 6.8% of its reports
- Swelling after Atipamezole 56 reports · 5.4% of its reports
- Swelling after Midazolam 36 reports · 4.8% of its reports
- Swelling after Orbifloxacin 28 reports · 4.1% of its reports
- Swelling after Acepromazine 37 reports · 6.3% of its reports
All reported side effects of Diphenhydramine in cats · Medicines most reported with swelling