Lethargy after Telmisartan in cats

33 reports to the FDA describe lethargy in cats given Telmisartan. That is 11% of all reports for this medicine, compared with 14% across reports for all cat medicines.

33Reports
52%Marked serious
30%Recovered
15%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
8 32%
1–2 days
7 28%
3–7 days
1 4.0%
1–4 weeks
1 4.0%
Over a month
8 32%

How the animals did

Recovered
10 30%
Still unwell when reported
6 18%
Euthanised
5 15%
Not known
12 36%

Problems reported at the same time

15 45%
Dehydration
9 27%
Breathing problems
5 15%
5 15%

Age of the animals

Under 1 year
0
1–3 years
0
4–7 years
3
8–11 years
8
12+ years
22

About this medicine

Type: medicine.

Questions owners ask

Can Telmisartan cause lethargy in cats?
33 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 2 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 cats · Medicines most reported with lethargy