Skin ulcer after Frunevetmab (Solensia) in cats

The FDA has received 148 reports of skin ulcer in cats after Frunevetmab. That is 1.8% of all reports for this medicine, compared with 0.3% across reports for all cat medicines, so it is reported unusually often with this medicine.

148Reports

81%Marked serious

20%Recovered

0.7%Died or euthanised

20 daysTypical onset

How soon it started

Same day

6 4.6%

1–2 days

9 6.9%

3–7 days

18 14%

1–4 weeks

58 44%

Over a month

40 31%

How the animals did

Recovered

30 20%

Still unwell when reported

107 72%

Euthanised

1 0.7%

Not known

10 6.8%

Problems reported at the same time

Itching

83 56%

Skin scab

60 41%

Skin rash or irritation

60 41%

Hair loss

45 30%

Abnormal cytology

19 13%

Didn't work as expected

17 11%

Crust

16 11%

Skin redness

14 9.5%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 skin ulcer in cats?: 148 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 20 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 skin ulcer