Atenolol side effects in dogs

50 reports sent to the FDA between 2011 and 2025 involve Atenolol in dogs. The most reported problems were vomiting, lethargy, diarrhea. 46% were marked serious.

50Reports
46%Marked serious
0.0%Only medicine involved
46%Recovered
8.0%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Vomiting
16 32%
Lethargy
10 20%
Diarrhea
8 16%
Loss of appetite
6 12%
Swelling
5 10%
Liver problems
4 8.0%
Weakness
3 6.0%
Blood problems
3 6.0%
Allergic reaction
3 6.0%
Breathing problems
2 4.0%
Restlessness or agitation
2 4.0%
Hyperkalaemia
2 4.0%
Hypoglycaemia
2 4.0%
Tremors
2 4.0%
Weight gain
2 4.0%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
3 6.0%
Didn't stop fleas
2 4.0%
Didn't prevent heartworm
1 2.0%

How soon problems started

Same day
9 26%
1–2 days
3 8.6%
3–7 days
2 5.7%
1–4 weeks
5 14%
Over a month
16 46%

Time from the first dose to the first sign, where both dates were reported (35 reports).

How the animals did

Recovered
22 44%
Recovered with lasting effects
1 2.0%
Still unwell when reported
12 24%
Died
1 2.0%
Euthanised
3 6.0%
Not known
11 22%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other medicines for dogs