[On-demand treatment of nonerosive reflux disease: omeprazole plus bicarbonate powder versus omeprazole capsules].

Background: Nonerosive reflux disease (NERD) has a chronic and benign course. On-demand therapy would constitute a useful strategy for its management.

Objective: To assess efficacy of on-demand treatment with omeprazole powder (OBA: omeprazole 20 mg, sodium bicarbonate 1680 mg, alginic acid 250 mg) versus omeprazole capsules 20 mg (OMZ) in the control of symptoms.