Blood in vomit after Selamectin (Revolution) in dogs

72 reports to the FDA describe blood in vomit in dogs given Selamectin. That is 0.2% of all reports for this medicine, compared with 0.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

72Reports

14%Marked serious

14%Recovered

17%Died or euthanised

1 daysTypical onset

How soon it started

Same day

9 36%

1–2 days

7 28%

3–7 days

2 8.0%

1–4 weeks

1 4.0%

Over a month

6 24%

How the animals did

Recovered

10 14%

Still unwell when reported

9 13%

Died

12 17%

Not known

41 57%

Problems reported at the same time

31 43%

30 42%

27 38%

25 35%

12 17%

11 15%

10 14%

6 8.3%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Selamectin prevents heartworm and treats fleas, ear mites and some worms (spot-on).

Products with this ingredient include Revolution. 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 Selamectin cause blood in vomit in dogs?: 72 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 1 day 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).

Blood in vomit with similar medicines

Blood in vomit after Ivermectin + Pyrantel (Heartgard Plus) 183 reports · 0.1% of its reports
Blood in vomit after Milbemycin Oxime + Spinosad (Trifexis) 144 reports · 0.1% of its reports
Blood in vomit after Moxidectin (ProHeart 6) 314 reports · 0.6% of its reports
Blood in vomit after Milbemycin Oxime + Praziquantel (Interceptor Plus) 71 reports · 0.2% of its reports
Blood in vomit after Milbemycin Oxime (Interceptor) 52 reports · 0.2% of its reports
Blood in vomit after Ivermectin (Heartgard) 34 reports · 0.3% of its reports

All reported side effects of Selamectin in dogs · Medicines most reported with blood in vomit