Hyperkeratosis after Cyclosporine (Atopica) in dogs

66 reports to the FDA describe hyperkeratosis in dogs given Cyclosporine. That is 0.4% of all reports for this medicine, compared with 0.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

66Reports

33%Marked serious

4.5%Recovered

1.5%Died or euthanised

56 daysTypical onset

How soon it started

Same day

1 6.7%

1–2 days

0 0.0%

3–7 days

0 0.0%

1–4 weeks

4 27%

Over a month

10 67%

How the animals did

Recovered

3 4.5%

Still unwell when reported

14 21%

Died

1 1.5%

Not known

48 73%

Problems reported at the same time

Skin rash or irritation

18 27%

12 18%

8 12%

8 12%

7 11%

6 9.1%

6 9.1%

5 7.6%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Cyclosporine controls allergic skin disease and some immune conditions.

Products with this ingredient include Atopica. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Cyclosporine cause hyperkeratosis in dogs?: 66 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 56 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).

Hyperkeratosis with similar medicines

Hyperkeratosis after Oclacitinib (Apoquel) 37 reports · 0.1% of its reports

All reported side effects of Cyclosporine in dogs · Medicines most reported with hyperkeratosis