Muscle wasting after Frunevetmab (Solensia) in cats

28 reports to the FDA describe muscle wasting in cats given Frunevetmab. That is 0.3% of all reports for this medicine, compared with 0.1% across reports for all cat medicines, so it is reported unusually often with this medicine.

28Reports

68%Marked serious

3.6%Recovered

21%Died or euthanised

15 daysTypical onset

How soon it started

Same day

8 30%

1–2 days

1 3.7%

3–7 days

2 7.4%

1–4 weeks

5 19%

Over a month

11 41%

How the animals did

Recovered with lasting effects

1 3.6%

Still unwell when reported

20 71%

Euthanised

6 21%

Not known

1 3.6%

Problems reported at the same time

13 46%

12 43%

11 39%

7 25%

6 21%

Abnormal radiograph finding

5 18%

Hair loss

5 18%

Musculoskeletal disorder

5 18%

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 muscle wasting in cats?: 28 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 15 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 muscle wasting