Blood problems after Frunevetmab (Solensia) in cats

The FDA has received 221 reports of blood problems in cats after Frunevetmab. That is 2.8% of all reports for this medicine, compared with 1.9% across reports for all cat medicines.

221Reports

83%Marked serious

2.3%Recovered

24%Died or euthanised

16 daysTypical onset

How soon it started

Same day

29 15%

1–2 days

23 12%

3–7 days

17 8.9%

1–4 weeks

57 30%

Over a month

65 34%

How the animals did

Recovered

4 1.8%

Recovered with lasting effects

1 0.5%

Still unwell when reported

152 69%

Died

9 4.1%

Euthanised

43 19%

Not known

12 5.4%

Problems reported at the same time

93 42%

90 41%

69 31%

52 24%

51 23%

44 20%

40 18%

Elevated symmetrical dimethylarginine (sdma)

29 13%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

173

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 blood problems 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 16 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 blood problems