Lethargy after Diphenhydramine in dogs
1,169 reports to the FDA describe lethargy in dogs given Diphenhydramine. That is 25% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.
1,169Reports
60%Marked serious
30%Recovered
17%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 lethargy in dogs?
- 1,169 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).
Lethargy with similar medicines
- Lethargy after Melarsomine (Immiticide) 2,412 reports · 11% of its reports
- Lethargy after Polysulfated Glycosaminoglycan 1,037 reports · 19% of its reports
- Lethargy after Butorphanol 661 reports · 15% of its reports
- Lethargy after Cefpodoxime 737 reports · 18% of its reports
- Lethargy after Tramadol 833 reports · 22% of its reports
- Lethargy after Florfenicol + Mometasone + Terbinafine 425 reports · 12% of its reports
- Lethargy after Desoxycorticosterone Pivalate 630 reports · 19% of its reports
- Lethargy after Propofol 315 reports · 10% of its reports
- Lethargy after Dirlotapide 460 reports · 16% of its reports
- Lethargy after Isoflurane 377 reports · 14% of its reports
All reported side effects of Diphenhydramine in dogs · Medicines most reported with lethargy