Itching after Milbemycin Oxime (Interceptor) in cats
21 reports to the FDA describe itching in cats given Milbemycin Oxime. That is 5.2% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported less often than average with this medicine.
21Reports
14%Marked serious
9.5%Recovered
0.0%Died or euthanised
15 daysTypical onset
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How soon it started
How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Milbemycin Oxime prevents heartworm and controls some intestinal worms (monthly).
Products with this ingredient include Interceptor. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Some herding breeds (for example Collies) carry the MDR1 gene variant and can be more sensitive to this drug class at high doses.
Questions owners ask
- Can Milbemycin Oxime cause itching in cats?
- 21 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).
Itching with similar medicines
- Itching after Selamectin (Revolution) 2,363 reports · 11% of its reports
- Itching after Eprinomectin + Esafoxolaner + Praziquantel (NexGard Combo) 334 reports · 10% of its reports
- Itching after Ivermectin (Heartgard) 48 reports · 5.0% of its reports
- Itching after Eprinomectin + Praziquantel 41 reports · 7.0% of its reports
All reported side effects of Milbemycin Oxime in cats · Medicines most reported with itching