Lethargy after Telmisartan in dogs

42 reports to the FDA describe lethargy in dogs given Telmisartan. That is 20% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.

42Reports
71%Marked serious
14%Recovered
12%Died or euthanised
31 daysTypical onset
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How soon it started

Same day
3 11%
1–2 days
2 7.1%
3–7 days
0 0.0%
1–4 weeks
7 25%
Over a month
16 57%

How the animals did

Recovered
6 14%
Still unwell when reported
18 43%
Died
2 4.8%
Euthanised
3 7.1%
Not known
13 31%

Problems reported at the same time

15 36%
15 36%
Urinary tract infection
8 19%
Weakness
7 17%

Age of the animals

Under 1 year
0
1–3 years
0
4–7 years
1
8–11 years
9
12+ years
31

About this medicine

Type: medicine.

Questions owners ask

Can Telmisartan cause lethargy in dogs?
42 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 31 days 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 Telmisartan in dogs · Medicines most reported with lethargy