Treating night-time heartburn repaired the sleep it was breaking

Acid reflux that flares at night is more than uncomfortable: it is commonly tied to broken sleep, and poor sleep then bleeds into daytime functioning and work. Proton pump inhibitors are the standard acid-suppressing treatment for reflux, but whether they actually fix the sleep problem that rides along with nighttime symptoms has remained unclear. This review set out to answer that directly: when adults with reflux and sleep disturbance take a PPI, do their nights and their days improve? For the many people whose heartburn is worst lying down, that question matters more than daytime symptom relief.

The authors searched the MEDLINE, EMBASE and Cochrane CENTRAL databases from their inception to March 1, 2026 for randomised controlled trials in adults who had both reflux disease and sleep disturbances, comparing any proton pump inhibitor against placebo or an alternative therapy. The primary outcome was the proportion of patients gaining relief from nighttime heartburn. Secondary outcomes included relief from reflux-related sleep disturbance, changes in subjective sleep quality, work productivity and treatment-emergent adverse events. Five trials involving 1495 patients met the inclusion criteria.

The three placebo-controlled trials consistently showed that PPI therapy improved relief from nighttime heartburn and from reflux-related sleep disturbance compared with placebo. Subjective sleep quality and sleep-related daytime functioning also generally improved on PPI therapy. The picture was more mixed across the full set of trials because they differed in populations, comparison treatments and how outcomes were measured, which makes the size of the sleep benefit hard to pin down. On safety, adverse events across the placebo-controlled studies were generally similar between the PPI and placebo groups.

The link between nocturnal reflux and sleep disturbance was already well recognised; what was uncertain was whether suppressing the acid would meaningfully improve the sleep. This review supports that connection, especially for people whose nighttime symptoms are clearly reflux-driven. It also exposes the gaps: only five trials qualified, they disagreed in design and measurement, and the strength of the sleep improvement varied accordingly. Trials with standardised sleep outcomes would sharpen the answer, as would work separating subjective sleep reports from objective measures.

If heartburn regularly interrupts your nights, the informative finding is that the sleep problem and the reflux problem appear to be one problem: treating the acid relieved both in these trials. That is a reason to think of reflux as a potential root cause worth raising with a doctor when sleep is poor and heartburn is present, rather than reaching first for sleep remedies. It is not a reason to self-prescribe, and the evidence is strongest for people whose night symptoms are clearly driven by reflux.