Answer
The most frequent side effects of oral erythromycin are dose-related gastrointestinal effects, including diarrhoea, loss of appetite, upper abdominal discomfort, nausea and vomiting.
Sources for this answer
- Erythromycin 250 mg Gastro-resistant TabletsBrown & Burk UK Ltd · emc · SmPC §4.8 Undesirable effects · Version 8Document updated
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