Question 1

What is the best pillow for acid reflux?

Accepted Answer

A wedge pillow providing 6–8 inches of upper-torso elevation is the gold standard for acid reflux. A 2011 study in the Journal of Gastrointestinal & Liver Disease recorded a 67% reduction in nighttime reflux events among GERD patients using a 28-degree wedge vs. flat sleeping. Our top picks are the MedCline Reflux Relief System and the Brentwood Home Zuma wedge.

Question 2

Does sleeping on an incline help acid reflux?

Accepted Answer

Yes — substantially, when the incline is sufficient. Studies consistently show 6–8 inches of upper-torso elevation (or 28+ degrees) is required for measurable reflux reduction. Stacking standard pillows under the head does not work — it bends the neck and the abdomen remains flat, providing no anti-reflux benefit.

Question 3

Should I sleep on my left or right side with acid reflux?

Accepted Answer

Left side. The lower esophageal sphincter sits above the gastric contents when sleeping on the left, which mechanically reduces reflux events. Right-side sleeping positions the sphincter below the gastric contents and frequently increases reflux. Multiple manometry studies confirm this asymmetric effect.

Question 4

How high should a wedge pillow be for acid reflux?

Accepted Answer

6–8 inches of elevation, or roughly 28–35 degrees of incline. Lower elevations (3–4 inches) provide minimal measurable benefit; higher elevations (over 10 inches) tend to cause the body to slide downward during sleep, which negates the anti-reflux effect. The 6–8 inch range is the documented therapeutic sweet spot.

6 Best Pillows for Acid Reflux (2026): GERD-Panelist Tested