gastrooesophageal reflux disease (1.5% vs 1.0%), diarrhoea (5.2% vs 9.6%), vomiting (2.3% vs 2.0%), nausea (4.7% vs 3.5%), abdominal pain (3.0% vs 2.5%), flatulence (1.0% vs 1.0%), gastritis (1.0% vs 0.7%)