What side effects may I notice from receiving Rythmol SR?

Side effects that you should report to your doctor or health care professional as soon as possible:
-chest pain, palpitations
-fever or chills
-shortness of breath
-swelling of feet or legs
-trembling or shaking

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
-blurred vision
-changes in taste (a metallic or bitter taste)
-constipation or diarrhea
-dry mouth
-headache
-nausea or vomiting
-tiredness or weakness

This list may not describe all possible side effects for Rythmol SR. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.