Bradycardia after Diphenhydramine in dogs
The FDA has received 46 reports of bradycardia in dogs after Diphenhydramine. That is 1.0% of all reports for this medicine, compared with 0.3% across reports for all dog medicines, so it is reported unusually often with this medicine.
46Reports
80%Marked serious
41%Recovered
20%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 bradycardia in dogs?
- 46 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).
Bradycardia with similar medicines
- Bradycardia after Melarsomine (Immiticide) 86 reports · 0.4% of its reports
- Bradycardia after Butorphanol 353 reports · 7.9% of its reports
- Bradycardia after Desoxycorticosterone Pivalate 30 reports · 0.9% of its reports
- Bradycardia after Propofol 299 reports · 9.7% of its reports
- Bradycardia after Isoflurane 320 reports · 12% of its reports
- Bradycardia after Atipamezole 208 reports · 7.8% of its reports
- Bradycardia after Famotidine 28 reports · 1.1% of its reports
- Bradycardia after Medetomidine 155 reports · 7.3% of its reports
- Bradycardia after Ketamine 107 reports · 5.7% of its reports
- Bradycardia after Acepromazine 96 reports · 5.5% of its reports
All reported side effects of Diphenhydramine in dogs · Medicines most reported with bradycardia