Weight loss after Frunevetmab (Solensia) in cats

530 reports to the FDA describe weight loss in cats given Frunevetmab. That is 6.6% of all reports for this medicine, compared with 4.6% across reports for all cat medicines.

530Reports

72%Marked serious

4.3%Recovered

19%Died or euthanised

14 daysTypical onset

How soon it started

Same day

114 24%

1–2 days

40 8.4%

3–7 days

49 10%

1–4 weeks

114 24%

Over a month

160 34%

How the animals did

Recovered

23 4.3%

Still unwell when reported

353 67%

Died

20 3.8%

Euthanised

83 16%

Not known

51 9.6%

Problems reported at the same time

248 47%

133 25%

130 25%

125 24%

103 19%

Didn't work as expected

73 14%

Diarrhea

70 13%

Dehydration

58 11%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

416

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 weight loss in cats?: 530 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 14 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 weight loss