Heartburn During Pregnancy: Relief, Diet and Safe Medicines

• Pregnancy heartburn is caused by pregnancy hormones relaxing the valve at the top of your stomach, plus the growing uterus pushing on your stomach — it is benign for the baby and usually resolves within days of delivery.
• Lifestyle and diet changes — smaller frequent meals, an early dinner, not lying down after eating, sleeping propped up on your left side — control mild to moderate heartburn in most women without medicine.
• Calcium carbonate antacids (Gelusil MPS, TUMS) and alginate rafts (Gaviscon) are safe first-line options; famotidine and PPIs like pantoprazole or omeprazole are safe next steps under your Ob-Gyn's advice.
• Avoid baking soda and ENO (sodium), Pepto-Bismol and aspirin-containing antacids, and NSAIDs (Combiflam, Brufen) for heartburn — these are not safe in pregnancy.
• See a doctor for heartburn that won't settle, swallowing trouble, weight loss, black or bloody vomit, or upper-belly pain with swelling and headache in the third trimester.

Heartburn (acid reflux) happens when stomach acid flows back up into the food pipe (oesophagus), causing a burning feeling behind the breastbone, a sour taste, or regurgitation. In pregnancy, a combination of hormonal and mechanical changes makes this almost universal.

Hormones relax the valve. Progesterone — which rises steeply through pregnancy — relaxes smooth muscle throughout your body. That is essential for keeping the uterus calm, but it also relaxes the lower oesophageal sphincter, the muscular valve that normally keeps acid down in the stomach. A looser valve lets acid escape upward. Oestrogen adds to this and slows how quickly your stomach empties, so food and acid sit longer.

The growing uterus pushes up. From the second trimester onward, your enlarging uterus presses the stomach upward and forward, shrinking its capacity and raising the pressure inside it. This is why heartburn often peaks in the third trimester even though hormone levels have plateaued. The same upward pressure can create a small hiatal hernia that further weakens the valve.

Some women are more prone. Pre-existing acid reflux or GERD, being overweight before pregnancy, a hiatal hernia, or heartburn in a previous pregnancy all raise your risk. So can carrying twins or multiples, because of the larger uterus and higher hormone load.

Indian habits add fuel. Spice-forward cooking (red and green chilli, garam masala, lots of oil and ghee), large thali-style meals, deep-fried snacks like samosas and pakoras, and late dinners eaten at 9–10 pm followed by lying down soon after are classic triggers. Pre-pregnancy acid reflux is also common in urban India.

Despite how unpleasant it feels, pregnancy heartburn does not harm your baby's development, and it usually disappears completely within a few days of delivery as hormones fall and the uterus shrinks back.

Heartburn can show up at any stage, but it usually follows a pattern across the three trimesters.

First trimester. Some women notice mild reflux as early as 6–10 weeks, often tangled up with morning sickness and nausea so it is hard to tell apart. Symptoms tend to be mild and come and go.

Second trimester. Heartburn becomes more clearly recognisable — burning behind the breastbone, a sour or acid taste, regurgitation, worse after meals and when lying down. This is usually when women start adjusting how and what they eat.

Third trimester. This is when heartburn typically peaks, as the uterus reaches its largest size and presses hardest on the stomach. Night-time and lying-down symptoms become prominent and can badly disturb sleep — if you are struggling to rest, see our guide to sleep problems and insomnia in pregnancy. Many women find they can no longer tolerate previously loved spicy or rich foods, and strong cooking smells can set off reflux.

Near delivery and after. Symptoms often ease in the last week or two as the baby "drops" into the pelvis and takes pressure off the stomach. After delivery, heartburn usually settles completely within 1–7 days, with most women feeling relief within a day or two. If it lingers beyond 4–6 weeks postpartum, it may be chronic acid reflux that needs separate evaluation.

• Eat small and often. Swap three large meals for 5–6 smaller ones every 2–3 hours. Stop when you are comfortably satisfied, not full — a smaller volume means less pressure pushing acid up.
• Eat slowly and sit upright after. Take 20–30 minutes for meals, chew well, and stay upright for 1–2 hours afterwards. Don't lie down or bend at the waist soon after eating; squat to pick things up instead.
• Make dinner early and light. Finish your last meal at least 2–3 hours before bed. The late Indian dinner is a major trigger — aim for dinner by 7–8 pm and avoid going to bed before 10–11 pm.
• Prop up the head of your bed. Raise the head end by 15–20 cm (6–8 inches) using risers or a wedge pillow. Stacking pillows under your head alone bends your neck without lifting your chest, so it works less well. Wedge pillows from Indian brands cost roughly Rs 1,500–4,000 online.
• Sleep on your left side. Left-side sleeping reduces reflux through stomach anatomy and is also recommended in late pregnancy for better blood flow to the placenta.
• Wear loose clothing. Tight waistbands, tightly tied sarees, snug salwar drawstrings and shapewear all squeeze the stomach. Choose stretchable maternity wear and loose cotton kurtas.
• Sip fluids between meals, not with them. Large drinks during a meal over-fill the stomach. Drink water about 30 minutes before or an hour after eating.
• Keep weight gain on track. Excess weight gain raises pressure in the abdomen and worsens reflux — see our pregnancy weight-gain guidelines for healthy targets by trimester.
• Manage stress. Stress increases acid and slows digestion. Gentle pregnancy-safe exercise, restorative yoga, walking and adequate sleep all help.

• Calcium carbonate (Gelusil MPS, TUMS, Calci-D) — the safest, most recommended first choice, and it adds to your daily calcium too. Usual dose 500–1,000 mg as needed, up to a few times a day. Can cause constipation; don't exceed recommended doses.
• Aluminium–magnesium hydroxide combinations (Gelusil, Digene, Mucaine, Polycrol) — also safe and commonly used after meals and at bedtime. The combination balances aluminium's constipating effect against magnesium's laxative one.
• Alginate rafts (Gaviscon) — sodium alginate forms a gel "raft" that floats on stomach contents and physically blocks reflux. Particularly effective for pregnancy reflux and recommended by ACOG; useful after meals and at bedtime.
• Sucralfate (Sucrafil) — a mucosal protectant that coats the food pipe and stomach lining; an option for stubborn symptoms, usually before meals and at bedtime.

If lifestyle changes plus over-the-counter antacids don't control your heartburn, your Ob-Gyn or a gastroenterologist may prescribe stronger acid-suppressing medicines. These have a long, reassuring safety record in pregnancy.

H2 blockers — famotidine first. Famotidine (Famocid, Topcid) is the preferred H2 blocker and reduces acid production, typically taken once or twice daily. Note: ranitidine (Zinetac, Aciloc, Rantac) was withdrawn in India in 2019–20 over NDMA contamination — do not use any leftover ranitidine; famotidine is the substitute.

Proton pump inhibitors (PPIs). These are stronger acid suppressors used for reflux that doesn't respond to the above, or for inflammation of the food pipe (oesophagitis). Pantoprazole (Pan, Pantocid) is the most commonly prescribed in Indian pregnancy and is widely considered safe; omeprazole (Omez, Ocid) is another well-studied option, usually taken once daily before breakfast. Large studies have not shown a consistent increase in harm to the baby. PPIs are used at the lowest effective dose for the shortest time needed, and most women can stop them after delivery.

Always take prescription acid medicines on your doctor's advice — especially if you also manage thyroid disease in pregnancy or other conditions, because of timing and interaction with other tablets.

• Baking soda and ENO (sodium bicarbonate). The sodium causes fluid retention, which can worsen swelling and blood pressure. Skip the home remedy of soda in water, and avoid ENO.
• Pepto-Bismol (bismuth subsalicylate). Contains a salicylate (aspirin-like) compound that crosses the placenta and can harm the baby. Avoid throughout pregnancy.
• Aspirin-containing antacids and pain relievers (Disprin and similar) for routine heartburn. Low-dose aspirin is sometimes prescribed to prevent Preeclampsia in Pregnancy: High BP, Warning Signs and Care in high-risk women, but that is a specific medical decision, not a heartburn remedy.
• NSAIDs — ibuprofen (Brufen, Combiflam), diclofenac (Voveran), naproxen. These can harm the baby, especially after 30 weeks, and should never be self-used for chest or stomach discomfort.
• Magnesium-only antacids in large doses near term, which can affect uterine activity. Combination magnesium–aluminium products are safer.
• Peppermint candies, oil and strong peppermint tea, which relax the valve and can worsen reflux.
• Concentrated herbal preparations and uterotonic herbs (kashayams, dashamula, ashoka, lodhra) unless prescribed by a qualified vaidya. Everyday culinary amounts of ajwain, saunf and jeera water are fine.
• Cannabis and CBD products, which are not recommended in pregnancy regardless of legal status.

• Severe heartburn disrupting sleep nightly, or not improving after 1–2 weeks of consistent antacids
• Difficulty or pain swallowing, or a feeling of food sticking
• Unintentional weight loss, or being unable to keep food down
• Black, tarry stools, or vomiting blood or coffee-ground material — a sign of bleeding
• Chest pain that doesn't fit reflux — crushing pain, pain spreading to the left arm or jaw, or breathlessness. Heart symptoms in women can be atypical; see heart disease symptoms in women and treat this as an emergency
• Severe upper-right belly pain — this may signal cholestasis of pregnancy or HELLP, not heartburn
• New severe heartburn with face/hand swelling, bad headache, vision changes or upper-belly pain in the third trimester — get your blood pressure checked urgently for Swelling in Pregnancy: Normal Edema vs Preeclampsia (India Guide)
• Persistent, repeated vomiting beyond the first trimester, which may be hyperemesis gravidarum rather than ordinary reflux

• ACOG — Problems of the Digestive System (Heartburn in Pregnancy)
• NHS — Indigestion and heartburn in pregnancy
• American College of Gastroenterology — Pregnancy and Gastrointestinal Disorders
• CDSCO — Ranitidine (NDMA) safety advisory, India