Hair loss after Frunevetmab (Solensia) in cats

The FDA has received 893 reports of hair loss in cats after Frunevetmab. That is 11% of all reports for this medicine, compared with 14% across reports for all cat medicines.

893Reports

59%Marked serious

7.6%Recovered

2.7%Died or euthanised

14 daysTypical onset

How soon it started

Same day

100 12%

1–2 days

86 10%

3–7 days

140 17%

1–4 weeks

286 34%

Over a month

224 27%

How the animals did

Recovered

68 7.6%

Still unwell when reported

716 80%

Died

3 0.3%

Euthanised

21 2.4%

Not known

85 9.5%

Problems reported at the same time

Itching

454 51%

Skin scab

249 28%

Skin rash or irritation

239 27%

Skin redness

76 8.5%

Didn't work as expected

59 6.6%

Crust

56 6.3%

Reddening of the skin

52 5.8%

Loss of appetite

47 5.3%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

173

12+ years

623

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 hair loss in cats?: 893 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 hair loss