Epigastric or retrosternal heartburn (pyrosis) is one of the most reported conditions and is the primary symptom of gastro-oesophageal reflux (GER). However, most people who suffer from acid reflux and pyrosis practice self-medication and only when the situation becomes persistent or chronic do they look for professional aid. And there is a large variety of over-the-counter (OTC) products worldwide for symptomatic treatment of acid reflux. In fact, it is important to rank the clinical efficacy of different anti-reflux agents to promote their rational use. In this study, the authors aimed to combine the results of randomized clinical trials that had compared the incidence of symptoms related to gastro-oesophageal reflux (GER) with/without endoscopic evidence of oesophagitis in a network meta-analysis and thus rank the main anti-reflux therapies according to the magnitude of their clinical efficacy. Inclusion criteria: 1) randomized controlled trials that compare anti-reflux
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