Prescription or OTCLower-cost generic availableClass: Gastrointestinal



Prescription or OTCLower-cost generic availableClass: Gastrointestinal
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Treats heartburn and stomach ulcers.

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Our bottom line

Prevacid (Lansoprazole) gives you long-lasting heartburn relief and helps heal ulcers.

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Prices and coupons for 30 (30mg) capsules of lansoprazole


  • Most people can take Prevacid (Lansoprazole) without any noticeable day-to-day side effects.
  • Prevacid (Lansoprazole) lasts longer than other types of antacids (like Zantac, Pepcid, or Tums), and you only need to take it once or twice a day.
  • You can take it in combination with a quick-acting antacid (like Maalox or Tums) if you need relief right away.
  • Available as both a generic and over-the-counter option, so it's pretty affordable.
  • Sometimes if one PPI doesn't work, another medication in the same class will work for you.
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  • Doesn't start working as fast as some other antacids like Tums, Rolaids, or Maalox.
  • Depending on the condition you are treating, it can take one to two weeks to get the full effect.
  • If you are taking Prevacid (Lansoprazole) for a long time you should take a calcium supplement to prevent fragile bones.
  • Can interact with other drugs, so be sure your doctor knows all the medicine you're taking before starting Prevacid (Lansoprazole).
How it works

Prevacid (Lansoprazole) is a proton pump inhibitor (PPI). It lowers the amount of acid in your stomach, treats heartburn, and heals ulcers.

What to expect when you take Prevacid (lansoprazole) for Ulcer

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Side effect rates for Prevacid (lansoprazole)

3791 From clinical trials of Prevacid / Stomach ulcer prevention
  • Diarrhea
  • Abdominal pain

Risks and Warnings for Prevacid (lansoprazole)

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  • Heartburn and feelings of upset stomach can be warning signs of a more serious stomach problem or cancer. If you need to take Prevacid (Lansoprazole) for 2 weeks or more go see a doctor. It's safest to get checked out to make sure you do not have a serious stomach condition.

Common concerns from people taking Prevacid (lansoprazole)

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  • Can interact with other drugs, so be sure your doctor knows all the medicine you're taking before starting Prevacid (Lansoprazole).
  • Avoid drug interactions by telling your doctor all of the other medications or herbal supplements you take before starting Prevacid (Lansoprazole).
  • Take Prevacid (Lansoprazole) about 1 hour before a meal.
  • It made me have terrible abdominal pain along with constipation and pains in my upper esophageal area.