Breakthrough Clinical Trial Reveals Sulthiame Pill as Potent Potential Treatment for Sleep Apnea

A European trial reveals sulthiame significantly reduces sleep apnea symptoms, offering a breakthrough pill alternative to CPAP machines.

By: AXL Media

Published: Mar 11, 2026, 10:33 AM EDT

Source: Information for this report was sourced from The University of Gothenburg and The Lancet

A Potential Departure from CPAP Dominance For decades, Continuous Positive Airway Pressure (CPAP) machines have been the gold standard for treating Obstructive Sleep Apnea (OSA). However, despite their efficacy, nearly 50% of patients abandon the treatment within a year due to the discomfort of wearing a mask. The University of Gothenburg’s latest trial indicates that a pill-based solution may finally be within reach, targeting the neurological signals that govern breathing rather than relying on mechanical air pressure.

How Sulthiame Stabilizes Sleep Obstructive sleep apnea occurs when the upper airway collapses during sleep, leading to oxygen drops and frequent "micro-awakenings." Sulthiame, a carbonic anhydrase inhibitor, works by:

Stabilizing breathing control: It modulates the brain's respiratory drive to ensure consistent breathing.

Reducing airway collapse: By increasing the activity of the muscles that keep the throat open, it prevents the physical obstruction that defines OSA.

Key Findings from the Trial The double-blind study involved 298 participants with moderate to severe OSA across four countries. The results were dose-dependent:

47% Reduction: Patients on the highest dose saw breathing pauses nearly halved.