You get through the day fine, then the moment your head hits the pillow it starts: burning in the chest, a sour taste, a cough that won't settle. Nighttime reflux is one of the most common complaints we hear, and it's not in your head. Your body genuinely handles stomach contents differently when you're lying down and asleep.

Why reflux gets worse at night

1. Gravity stops helping

When you're upright, gravity keeps stomach contents where they belong. Lie flat and the oesophagus and stomach are level, so anything that slips past the valve between them has nowhere to drain back to.

2. You swallow less

During the day you swallow constantly, and every swallow washes the oesophagus clean while saliva neutralises traces of acid. Asleep, swallowing and saliva drop dramatically, so whatever comes up stays in contact with the lining for longer.

3. Late, large meals

A full stomach puts pressure on the valve at the top of it, the lower oesophageal sphincter. Eating your biggest meal at 8 or 9pm and lying down at 10 is close to a perfect recipe for reflux.

4. The evening habits stack up

Alcohol, chocolate, peppermint, fatty food and big portions all relax that valve or slow stomach emptying, and they tend to cluster in the evening.

5. Sleeping position

Lying on your right side or flat on your back tends to make reflux worse. Research consistently shows the left side is better, because of the way the stomach sits relative to the oesophagus.

Signs of nighttime reflux you might be missing

Not everyone wakes up with heartburn. Look out for:

• A hoarse voice or sore throat first thing in the morning
• Coughing or throat clearing when you lie down
• Waking suddenly with a choking or gasping feeling
• A sour or bitter taste on waking
• Disturbed sleep with no obvious cause

Throat and voice symptoms without much heartburn often point to silent reflux. Our guide on silent reflux symptoms goes deeper.

What actually helps

• Finish eating three hours before bed. This single change makes the biggest difference for most people. Move your main meal earlier and keep anything after it light.
• Raise the head of the bed, not just your head. Stacking pillows bends you at the waist and can increase pressure on the stomach. Instead, raise the head end of the bed by around 10 to 20cm with blocks, or use a wedge pillow that lifts your whole upper body.
• Sleep on your left side. Simple, free, and well supported by research.
• Watch the evening triggers. Alcohol, coffee after midday, chocolate, peppermint tea, fried food and very spicy dishes are the usual suspects. If coffee is part of your day, our post on coffee and reflux is worth a read.
• Loosen up. Tight waistbands and belts in the evening squeeze the stomach.
• Manage stress before bed. A wound up nervous system makes the gut more sensitive to every bit of reflux. A short wind down routine helps more than people expect.
• Look after the lining. Repeated exposure to stomach contents leaves the lining of the oesophagus and stomach irritated and more reactive. Slippery elm, marshmallow root and aloe vera are traditionally used to coat and soothe, and DGL liquorice to support the protective mucus layer.

A note on medication

If you've been prescribed reflux medication, don't stop or change it without speaking to your GP. Stopping suddenly can cause a temporary surge in symptoms, which we explain in PPI rebound. The lifestyle changes above work alongside whatever your doctor has advised.

When to see a doctor

See your GP if nighttime reflux happens more than twice a week, has lasted more than three weeks, or is regularly waking you. Get urgent advice for difficulty or pain when swallowing, food getting stuck, vomiting blood, black stools, unexplained weight loss, or chest pain you're not sure about. Chest pain should never be assumed to be reflux without being checked.

Supporting your gut through the night

The habits above take pressure off at night. Supporting the lining helps during the day too, so it's less reactive when reflux does happen. The Advanced Gut Repair Formula combines 5g of L-glutamine with DGL, slippery elm, marshmallow root, aloe vera and Bacillus coagulans in one daily drink.

Shop the Advanced Gut Repair Formula →

Here for you,
The Gut Axis Family