Rotatory nystagmus after Bedinvetmab (Librela) in dogs

38 reports to the FDA describe rotatory nystagmus in dogs given Bedinvetmab. That is 0.2% of all reports for this medicine, compared with 0.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

38Reports

82%Marked serious

13%Recovered

18%Died or euthanised

13 daysTypical onset

How soon it started

Same day

2 7.4%

1–2 days

1 3.7%

3–7 days

5 19%

1–4 weeks

11 41%

Over a month

8 30%

How the animals did

Recovered

5 13%

Still unwell when reported

26 68%

Euthanised

7 18%

Problems reported at the same time

Head tilt - neurological disorder

19 50%

16 42%

15 39%

7 18%

7 18%

7 18%

6 16%

6 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Bedinvetmab reduces osteoarthritis pain in dogs (monthly injection).

Products with this ingredient include Librela. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Bedinvetmab cause rotatory nystagmus in dogs?: 38 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 13 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).

All reported side effects of Bedinvetmab in dogs · Medicines most reported with rotatory nystagmus