Lethargy after Hydrogen Peroxide in dogs

37 reports to the FDA describe lethargy in dogs given Hydrogen Peroxide. That is 17% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.

37Reports
46%Marked serious
32%Recovered
2.7%Died or euthanised
Same dayTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
23 66%
1–2 days
8 23%
3–7 days
0 0.0%
1–4 weeks
1 2.9%
Over a month
3 8.6%

How the animals did

Recovered
12 32%
Still unwell when reported
14 38%
Died
1 2.7%
Not known
10 27%

Problems reported at the same time

18 49%
14 38%
7 19%
Loss of appetite
7 19%
Drooling
4 11%
Third eyelid protrusion
3 8.1%
Nausea
3 8.1%

Age of the animals

Under 1 year
7
1–3 years
13
4–7 years
10
8–11 years
3
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Hydrogen Peroxide cause lethargy in dogs?
37 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

All reported side effects of Hydrogen Peroxide in dogs · Medicines most reported with lethargy