Closely observe your dog for any unusual changes after starting mexiletine. Report any concerns immediately to your veterinarian.
Gastrointestinal Issues
- Watch for vomiting. Note the frequency and severity. A single episode might not be cause for alarm, but persistent vomiting requires veterinary attention. Monitor bowel movements for changes in frequency, consistency, or color. Diarrhea or constipation needs assessment by your vet. Check for loss of appetite. Significant reductions in food intake should be reported.
Neurological Signs
- Observe your dog’s gait. Ataxia (lack of coordination) or tremors are possible side effects and need immediate veterinary review. Assess mental status. Lethargy, confusion, or seizures require prompt veterinary intervention. Note any changes in behavior, such as increased anxiety or aggression.
Other Potential Side Effects
Monitor your dog’s heart rate and rhythm. Mexiletine can affect heart function. Check for changes in urination or thirst levels. Examine your dog’s skin for rashes or other allergic reactions. Weigh your dog regularly. Significant weight loss or gain warrants veterinary attention.
Keeping Detailed Records
Maintain a detailed record of any observed side effects, including dates, times, and severity. This helps your veterinarian accurately assess the situation and make informed decisions regarding medication adjustments.
When to Contact Your Veterinarian
Contact your vet immediately if you observe any concerning signs, even if they seem minor. Early intervention can prevent serious complications.
