Raising a bed for acid reflux means lifting the head end 6 to 8 inches with bed blocks or a wedge, so the chest stays above the waist — extra pillows won’t work.
For the full breakdown, see our best Bed For Acid Reflux guide.
Stacking three pillows and still waking with acid in your throat happens because head elevation is not torso elevation. RACGP-reviewed guidance calls raising the head of the bed reasonable for people whose heartburn worsens when lying flat, and Mayo Clinic lists blocks or a wedge among practical options.
How High Should The Head Of The Bed Be Raised?
Aim for 6 to 8 inches (15 to 20 cm) at the head end — enough to change how gravity acts on stomach contents, low enough to sleep on.
RACGP guidance notes studies used roughly 20 cm; starting lower is reasonable. Try about 10 cm (4 inches) first, moving to 20 cm after a few weeks if symptoms persist. That guidance calls this elevation relatively safe, with reported symptom improvement and reduced esophageal acid exposure — though the evidence base is weak.
The goal is chest and head above the waist, not just a propped-up neck.
Three Ways To Raise The Bed — And Which One Fits Your Setup
Bed blocks under the head-end legs, a wedge between mattress and box spring, or an adjustable base all raise the upper body.
| Method | How It Works | Best For |
|---|---|---|
| Bed blocks or risers | Wooden blocks lift the entire head end of the frame 6–8 inches | Beds with accessible head-end legs; a permanent, no-cost-to-try fix |
| Wedge under the mattress | A firm foam wedge slides between mattress and box spring | Platform beds, adjustable frames, or shared beds where one sleeper needs it |
| Wedge pillow on the mattress | A contoured wedge sits on top of the mattress under your torso | Renters and travelers who can’t modify the bed itself |
| Adjustable bed base | The head section tilts by remote control | Anyone already shopping for a new base; elevation on demand |
| Stacked regular pillows | Pillows under the head only | Nothing — this approach does not elevate the torso, and guidance says it doesn’t work |
Mayo Clinic names blocks or a wedge specifically. If you’re weighing a new frame, this roundup of beds for acid reflux is worth a look before you buy. RACGP also lists a wedge pillow on top of the mattress, with the caveat that it must support the upper body, not just the neck.
Step-By-Step: Setting Up Bed Blocks Or A Wedge
Bed blocks:
- Measure a 6 to 8 inch lift. Pre-cut wooden blocks or commercial risers both work; one solid block per leg beats stacked scrap lumber.
- Lift the head-end legs only. Raising the foot end tilts you downhill and worsens reflux.
- Set one block under each head-end leg, then press down on the frame. A stable bed won’t rock; if it does, blocks aren’t seated flat.
- Recheck height with a tape measure from floor to frame top at both ends.
Wedge under the mattress:
- Slide the wedge between mattress and box spring or platform, thick edge at the head.
- Position it so the incline starts around your waist, not your shoulders.
- Lie down and check — a gentle slope across your whole torso, head highest.
For full details on how the acid exposure studies were conducted, see the RACGP’s head-of-bed elevation guidance.
What Cancels Out The Elevation
- Stacking regular pillows. Bends your neck, leaves your torso flat — the position guidance says doesn’t work.
- Raising only the head and neck. Elevation must run from the waist up.
- Using too little height. Studies centered on roughly 10–20 cm; an inch or two rarely helps.
- Lying down within three hours of eating. Let food clear before going horizontal.
One honest note: the evidence RACGP reviewed is weak but supportive, and no source names device brands, models, or prices. If you can’t modify your bed, talk to a clinician rather than fighting your furniture.
FAQs
Do pillows under my head help nighttime heartburn?
No. Regular pillows prop up your neck, not your torso, so your stomach stays level with your throat. Guidance explicitly says this doesn’t work. You need the whole upper body elevated from the waist up — blocks, a wedge, or an adjustable base.
Can I raise just the head of the mattress instead of the whole bed?
Yes — a wedge between mattress and box spring does exactly that. Mayo Clinic names blocks or a wedge as the practical options, and a wedge suits platform beds or shared beds where only one sleeper needs the incline. Make sure it slopes from your waist, not your shoulders.
How long before head-of-bed elevation helps reflux?
Give it a few weeks. RACGP suggests starting at about 10 cm and increasing toward 20 cm after a few weeks if symptoms continue. Symptom improvement and reduced esophageal acid exposure have been reported, though the evidence base is weak. Pair the setup with waiting three hours after meals before lying down.
References & Sources
- RACGP. “Elevating the head of the bed for GERD.” Source for elevation heights, safety notes, and study evidence discussed throughout.
- Mayo Clinic. “Esophagitis – Diagnosis and treatment.” Source for bed blocks and wedge guidance.