Lactulose side effects in dogs
89 reports sent to the FDA between 2011 and 2025 involve Lactulose in dogs. The most reported problems were lethargy, vomiting, loss of appetite. 69% were marked serious.
89Reports
69%Marked serious
0.0%Only medicine involved
26%Recovered
27%Died or euthanised
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About this medicine
Type: medicine.
Most reported side effects
Share = percentage of this medicine's reports that mention the problem. One report can list several problems.
Reports that it didn't work
Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.
How soon problems started
Time from the first dose to the first sign, where both dates were reported (65 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Yorkshire Terrier 19 reports
- Labrador Retriever 5 reports
- Miniature Schnauzer 5 reports
- Chihuahua 5 reports
- German Shepherd Dog 5 reports
- Shih Tzu 3 reports
- Australian Shepherd Dog 3 reports
- Dog (other) 2 reports
- Miniature Pinscher 2 reports
- German Pomeranian Spitz 2 reports
Other medicines for dogs
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