Thank you for the additional information. Imodium caplets are intensely bitter and can cause quite a few symptoms when a pet consumes more than they could. Poison control reports that most dogs show signs of vomiting, lethargy, diarrhea, drooling, low temperature and slow heart rate. Ideally, we'd like to see her examined and treated since she consumed an unknown amount of this medication but most dogs do well once vomiting has occurred. You can wait and watch her at home, but keep close tabs on her demeanor. If you see any changes or persistent symptoms, she absolutely needs an examination. Make sure to keep this medication out of her reach as dogs do tend to be repeat offenders even if they felt ill after an ingestion previously.
Chances are that she is still nauseated following the ingestion. You can administer a dose of regular pepcid (famotidine) every 12-24 hours. This should help with GI symptoms. You will want to give 0.5mg/pound of body weight (a 10# ***** would receive 5mg, a 5# ***** would receive 2.5mg, etc). For this, you can visit any human pharmacy and buy the OTC brand name Pepcid, or you can use the cheaper, off-brand “famotidine” that’s available. Either will be useful. If your companion is avoiding taking medication, you will likely need to using a pilling technique like this one: https://www.youtube.com/watch?v=-P6NfbxeLX0 If this does not improve her will to drink and eat well, an examination is needed.
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