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Best OTC Medicine For Heartburn
(Pharmacist Guide)

Heartburn happens due to acidic foods or drinks, or triggered increase in stomach acid production which could flow up to the esophagus. Treatment depends on severity and frequency among other factors. Click the product that matches your need to view the pharmacist recommendations and tips.

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If you need a fast heartburn relief (as needed)

My Recommendation

  • Tums® Acts fast to neutralize acid in stomach.

  • Rolaids® A good alternative if you have constipation issues.

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If your heartburn comes with abdominal gas and bloating

My Recommendation

  • Mylanta® Contains simethicone to relieve pressure and fullness in addition to neutralizing stomach acid.

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If you heartburn is more frequent but still mild

My Recommendation

  • Pepcid® Reduce acid production in stomach to prevent hyperacidity.

  • Tagamet HB® A well-known product for years, but have some drug interactions to consider.

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If your heartburn is more severe and frequent

My Recommendation

  • Prilosec OTC®  A well-known proton pump inhibitor, could interact with some medications.

  • Prevacid 24HR® Less significant drug interactions compared to Prilosec.

  • Nexium 24HR® Expected to be slightly stronger than the alternatives.

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Pharmacist Recommended OTC Treatment Options

Tums® Antacid

A chewable antacid that contains Calcium Carbonate that quickly neutralizes stomach acid, providing rapid relief within minutes for mild heartburn. It works locally in the stomach without affecting acid production long-term.

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Pharmacist Tips

  • Best for occasional symptoms, especially after large meals or trigger foods.

  • Not intended for frequent or chronic use.

  • May cause constipation with regular use.

Tums

Rolaids® Antacid

A combination antacid that contains (Calcium Carbonate + Magnesium Hydroxide) that act to neutralize stomach acid quickly. The magnesium helps balance calcium’s constipating effects and may provide more balanced digestive tolerance.

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Pharmacist Tips

  • Best for occasional symptoms, especially after large meals or trigger foods.

  • Not intended for frequent or chronic use.

  • Less risk of constipation compared to Tums.

Rolaids

Mylanta® Antacid

A liquid antacid that contains (Aluminum Hydroxide + Magnesium Hydroxide + Simethicone) act to neutralize stomach acid while also addressing gas and bloating. Simethicone helps break up gas bubbles, making it helpful for pressure or fullness after meals.

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Pharmacist Tips

  • A good option when heartburn is combined with gas or bloating.

  • Shake the suspension well before use and measure doses carefully.

  • Lower risk of constipation compared to Tums.

Mylanta

Pepcid® (Famotidine)

An H2 blocker that reduces acid production and begins working within 30–60 minutes, providing relief for up to 12 hours. It reduces stomach acid content by reducing acid secretion into stomach.

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Pharmacist Tips

  • Can be used for relief or prevention (before trigger meals).

  • Suitable for mild to moderate, recurring heartburn.

  • Works best when taken once or twice daily as directed.

  • Low risk of interactions compared to Cimetidine.

Pepcid

Tagamet HB® (Cimetidine)

An H2 blocker that reduces stomach acid and can be used for both prevention and treatment of heartburn. It reduces stomach acid content by reducing acid secretion into stomach.

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Pharmacist Tips

  • More likely to have drug interactions than other H2 blockers.

  • Consult a pharmacist if taking other medications.

  • Works best when taken once or twice daily as directed.

  • Useful for occasional to moderate symptoms.

Tagamet

Prilosec OTC® (Omeprazole)

A proton pump inhibitor that reduces stomach acid at the source, providing all-day control when taken consistently. PPIs significantly reduce acid production and secretion which makes them the most effective option for severe cases.

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Pharmacist Tips

  • Take once daily, 30–60 minutes before breakfast.

  • Not for immediate relief as it may take 1–4 days to reach maximum benefit.

  • Avoid long-term use unless advised, Long-term use may affect vitamin and mineral absorption.

Omeprazole

Prevacid 24HR® (Lansoprazole)

A PPI that provides consistent 24-hour acid suppression and helps prevent recurring symptoms. PPIs significantly reduce acid production and secretion which makes them the most effective option for severe cases.

 

Pharmacist Tips

  • Take once daily before breakfast.

  • Intended for frequent symptoms, not occasional use.

  • May take several days for full benefit.

  • Avoid long-term use unless advised, Long-term use may affect vitamin and mineral absorption.​

Lansoprazo

Nexium 24HR® (Esomeprazole)

A PPI that blocks the final step of acid production, providing sustained acid control with daily use. PPIs significantly reduce acid production and secretion which makes them the most effective option for severe cases.

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Pharmacist Tips

  • Best for persistent or frequent heartburn.

  • Requires daily use for several days to reach full effect.

  • Not suitable for immediate symptom relief.

  • Avoid long-term use unless advised, Long-term use may affect vitamin and mineral absorption.​

Esmoprazole
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