Blood in stool after Selamectin (Revolution) in dogs
109 reports to the FDA describe blood in stool in dogs given Selamectin. That is 0.4% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported less often than average with this medicine.
109Reports
9.2%Marked serious
3.7%Recovered
19%Died or euthanised
–Typical onset
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How the animals did
Problems reported at the same time
Age of the animals
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 stool in dogs?
- 109 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.
- 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 stool with similar medicines
- Blood in stool after Ivermectin + Pyrantel (Heartgard Plus) 196 reports · 0.1% of its reports
- Blood in stool after Milbemycin Oxime + Spinosad (Trifexis) 79 reports · 0.1% of its reports
- Blood in stool after Moxidectin (ProHeart 6) 185 reports · 0.4% of its reports
- Blood in stool after Milbemycin Oxime + Praziquantel (Interceptor Plus) 38 reports · 0.1% of its reports
- Blood in stool after Milbemycin Oxime (Interceptor) 148 reports · 0.5% of its reports
- Blood in stool after Ivermectin (Heartgard) 31 reports · 0.3% of its reports
All reported side effects of Selamectin in dogs · Medicines most reported with blood in stool