Prevacid 24HR


Generic Name: Prevacid 24HR Brand Name(s): Generics only. No brands available.


What is Prevacid 24HR® (lansoprazole) used for?

Prevacid 24HR® is commonly used to treat frequent heartburn (occurs 2 or more days a week). It is not intended for immediate relief of heartburn; this drug may take 1 to 4 days for full effect.

How should I take Prevacid 24HR® (lansoprazole)?

14-Day Course of Treatment

Swallow 1 capsule with a glass of water before eating in the morning.

Take every day for 14 days.

Do not take more than 1 capsule a day.

Swallow whole. Do not crush or chew capsules.

Do not use for more than 14 days unless directed by your doctor.

Repeated 14-Day Courses (if needed)

You may repeat a 14-day course every 4 months.

Do not take for more than 14 days or more often than every 4 months unless directed by a doctor.

How do I store Prevacid 24HR® (lansoprazole)?

Prevacid 24HR® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Prevacid 24HR® in the bathroom or the freezer. There may be different brands of Prevacid 24HR® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Prevacid 24HR® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Prevacid 24HR® (lansoprazole)?

Before using this drug, tell your doctor if:

  • You are pregnant or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.
  • You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines.
  • You have allergy with any of active or inactive ingredients of Prevacid 24HR® or other medications.
  • You have any other illnesses, disorders, or medical conditions.

Do not use if you have trouble or pain swallowing food, vomiting with blood, or bloody or black stools. These may be signs of a serious condition. See your doctor.

Stop use and ask a doctor if:

  • You need to take this product for more than 14 days.
  • You need to take more than 1 course of treatment every 4 months.

Is it safe during pregnancy or breastfeeding?

There isn’t enough information about the safety of using Prevacid 24HR® during pregnancy and breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Prevacid 24HR®.

Side effects

What side effects can occur from Prevacid 24HR® (lansoprazole)?

Stop use and ask a doctor if your heartburn continues or worsens.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with Prevacid 24HR® (lansoprazole)?

Prevacid 24HR® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Products that may interact with this drug are:

  • Warfarin (blood-thinning medicine)
  • Prescription antifungal or anti-yeast medicines
  • Digoxin (heart medicine)
  • Theophylline (asthma medicine)
  • Tacrolimus (immune system medicine)
  • Atazanavir (medicine for HIV infection)

Does food or alcohol interact with Prevacid 24HR® (lansoprazole)?

Prevacid 24HR® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Prevacid 24HR® (lansoprazole)?

Prevacid 24HR® may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Prevacid 24HR® (lansoprazole).

What is the dose of Prevacid 24HR® (lansoprazole) for an adult?

Adults 18 years of age and older

This product is to be used once a day (every 24 hours), every day for 14 days.

It may take 1 to 4 days for full effect, although some people get complete relief of symptoms within 24 hours.

What is the dose of Prevacid 24HR® (lansoprazole) for a child?

Children under 18 years of age: ask a doctor before use. Heartburn in children may sometimes be caused by a serious condition.

How is Prevacid 24HR® (lansoprazole) available?

Prevacid 24HR® is available in the following dosage forms and strengths:

  • Capsule

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Prevacid 24HR®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

Review Date: November 14, 2017 | Last Modified: November 14, 2017

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