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Hi there, this is Dr. Elaine
How long ago did you give them?
The dosage for dogs is 0.05 to 0.1 mg/lb body weight. You gave 14mg, vs 10mg recommended higher-range dose.
Normally, too much lopermide is going to cause (possible sedation), however, at significantly higher doses than she received we might see hyperexcitability/anxiousness/rapid heart rate.
I doubt you are going to see much of anything, as this drug does have a fairly high margin of safety.
Let me know if you have any further questions.