What helps with acid reflux while pregnant

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3-minute read

Many women experience indigestion and heartburn while they are pregnant, which can be painful or uncomfortable. There are ways to help avoid or treat indigestion and heartburn, especially if it is mild. Sometimes the feeling of heartburn can be confused with a more serious condition called pre-eclampsia.

Indigestion, also called 'dyspepsia', is a feeling of pain or discomfort in the stomach (upper abdomen, or, tummy). This mostly occurs after eating or drinking but can happen some time after.

If you have indigestion in the early stage of your pregnancy, this may be caused by changes in your hormone levels. In the second or third trimester, indigestion becomes more common and may be caused by your baby pushing up against your stomach. As many as 8 in 10 women may have indigestion during their pregnancy.

Symptoms of indigestion may include:

  • heartburn
  • reflux or regurgitation (food coming back up from your stomach)
  • burping
  • feeling heavy, bloated or full
  • feeling sick
  • vomiting

Heartburn is a burning pain in the throat or chest, behind the breastbone, caused by stomach acid coming up the oesophagus (the tube that connects your mouth to your stomach) and irritating the lining.

In pregnant women, indigestion and heartburn can be caused by:

  • eating a big meal
  • eating high-fat foods
  • eating chocolate or peppermint
  • drinking fruit juice or caffeinated beverages (coffee, tea, cola drinks)
  • doing physical activity soon after eating
  • bending over
  • feeling anxious

It's a good idea to take note of the particular foods, drinks or activities that give you indigestion while you are pregnant.

Avoiding indigestion and heartburn

If your symptoms are mild, it's possible that changes to your diet or lifestyle may help prevent indigestion and heartburn. You could try:

  • eating smaller meals, more often
  • avoiding eating just before bed
  • avoiding foods and drinks that you suspect give you heartburn
  • not drinking a lot of coffee at the end of the day
  • avoiding eating and drinking at the same time, which can make your stomach more full
  • sitting up straight while eating, and not lying down after a meal
  • chewing gum, which may cause you to produce more saliva to help neutralise the acid
  • stop smoking
  • raise the head of your bed by 10 to 15cm
  • sleep on your left side

If your indigestion is not helped by diet and lifestyle changes, or your symptoms are more severe, your doctor or midwife may suggest that you take a medicine for indigestion that is safe to use during pregnancy. Medicines can neutralise the acid in your stomach, reduce the amount of acid produced by your stomach and stop the acid rising into your oesophagus.

Heartburn symptoms and pre-eclampsia

If your heartburn symptoms don't go away with medicine, it's important to see your doctor as it may be a sign of something more serious, such as pre-eclampsia. A pregnant woman with pre-eclampsia usually has high blood pressure and problems with her kidneys. Pre-eclampsia could also seriously affect a woman's liver, blood and brain. Any pregnant woman can experience pre-eclampsia – almost 1 in 20 Australian women will develop it.

Because pre-eclampsia is dangerous for both you and your baby, you should let your doctor know if your heartburn medicine is not working. This is especially important if you're also feeling very unwell or you have:

  • sudden swelling of your hands, feet or face
  • a headache that doesn't go away with simple painkillers
  • problems with your eyesight such as blurring or seeing flashing lights or dots
  • a strong pain below your ribs

Find out more about how pre-eclampsia is treated here.

Call Pregnancy, Birth and Baby on 1800 882 436 to speak to a maternal child health nurse.

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Last reviewed: May 2020

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More than half of pregnant women get serious heartburn, particularly during their second and third trimesters. Heartburn, also called acid indigestion, is an irritation or burning sensation of the esophagus (the tube that carries food and liquid to your stomach when you swallow). It’s caused by stomach contents that reflux (come back up).

Symptoms of Heartburn During Pregnancy

If you have heartburn while you’re pregnant, you may:

  • Feel burning or pain in your chest or throat, especially after you eat
  • Have sensations of fullness, heaviness, or bloating
  • Burp or belch
  • Have a sour or bitter taste in your mouth
  • Cough or have sore throat

Causes of Heartburn During Pregnancy

Heartburn in pregnancy may happen because of changing hormone levels, which can affect the muscles of the digestive tract. 

Pregnancy hormones can cause your lower esophageal sphincter (the muscular valve between the stomach and esophagus) to relax, allowing stomach acids to flow back up into your esophagus. Also, as your baby grows, your enlarged uterus can crowd the abdomen, pushing stomach acids upward. Although it's rare, gallstones can also cause heartburn during pregnancy.

Prevention of Heartburn During Pregnancy

Some tips that may help you cut down on heartburn during your pregnancy include:

  • Eat several small meals each day instead of three large ones.
  • Eat slowly.
  • Avoid fried, spicy, or rich (fatty) foods or any foods that seem to cause relaxation of the lower esophageal sphincter and increase the risk of heartburn.
  • Don’t smoke tobacco or drink alcohol, which can make heartburn symptoms worse.
  • Drink less while eating. Drinking large amounts while eating may increase the risk of acid reflux and heartburn.
  • Don't lie down directly after eating.
  • Keep the head of your bed higher than the foot of your bed. Or place pillows under your shoulders to help prevent stomach acids from rising into your esophagus.
  • Wear loose-fitting clothing. Tight-fitting clothes can increase the pressure on your stomach and abdomen.
  • Try to avoid constipation.

Treatment of Heartburn During Pregnancy

If your heartburn won’t go away, see your doctor. They may prescribe or recommend OTC medications that are safe to take during pregnancy. Heartburn usually disappears following childbirth.

Medications may include:

Over-the-counter antacids such as calcium carbonate or magnesium hydroxide. These are generally safe to use during pregnancy. You may find that liquid heartburn relievers are more effective in treating heartburn, because they coat the esophagus.

H2 blockers. These medications block chemical signals that produce stomach acid. They include cimetidine (Tagamet) and famotidine (Pepcid, Zantac 360), and they’re available in over the counter and prescription strengths.

Proton pump inhibitors (PPIs). Like H2 blockers, these drugs help cut down on stomach acid. PPIs, which include lansoprazole (Prevacid) and omeprazole (Prilosec), are available over the counter and by prescription.

If you take iron supplements, talk to your doctor before you take a PPI or H2 blocker. These medications can make the supplements less effective.

Heartburn Medication to Avoid During Pregnancy

Talk to your doctor before taking any antacids. Some contain ingredients that may harm you or your baby. Be sure to not to take these medications:

Ranitidine. In 2020, the FDA stopped sales of an H2 blocker called ranitidine (the ingredient in older Zantac products) because it was contaminated with a cancer-causing agent. If you take OTC ranitidine, stop your use. If you have a prescription for ranitidine, talk to your doctor about other options before you stop your medication.

What relieves acid reflux in pregnancy?

For heartburn relief, over-the-counter antacids (such as Tums, Mylanta, Rolaids, and Maalox) are all considered safe medications to use during pregnancy. As always, consult with your provider about any medications you're taking – even if they're considered safe.

Does drinking water help acid reflux during pregnancy?

Water can be a bit of a mixed bag when it comes to affecting GERD symptoms in pregnancy. Dr. Johnson notes that some women find that drinking water after a meal helps. It is thought that it may reduce the level of acidity in the stomach.

Why do I have so much acid reflux while pregnant?

Heartburn is common during pregnancy. Pregnancy hormones can make the valve at the entrance to the stomach relax so that it doesn't close as it should. This lets acidic stomach contents move up into the esophagus, a condition known as gastroesophageal reflux (GER), or acid reflux.