Lameness after Frunevetmab (Solensia) in cats

The FDA has received 221 reports of lameness in cats after Frunevetmab. That is 2.8% of all reports for this medicine, compared with 0.6% across reports for all cat medicines, so it is reported unusually often with this medicine.

221Reports

67%Marked serious

9.0%Recovered

17%Died or euthanised

6 daysTypical onset

How soon it started

Same day

55 28%

1–2 days

26 13%

3–7 days

26 13%

1–4 weeks

40 20%

Over a month

51 26%

How the animals did

Recovered

18 8.1%

Recovered with lasting effects

2 0.9%

Still unwell when reported

136 62%

Died

4 1.8%

Euthanised

33 15%

Not known

28 13%

Problems reported at the same time

Loss of appetite

43 19%

Abnormal radiograph finding

38 17%

37 17%

30 14%

30 14%

30 14%

24 11%

Didn't work as expected

23 10%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

141

About this medicine

Frunevetmab reduces osteoarthritis pain in cats (monthly injection).

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

Questions owners ask

Can Frunevetmab cause lameness in cats?: 221 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 6 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 Frunevetmab in cats · Medicines most reported with lameness