What is Pantoprazole: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Pantoprazole is a prescription stomach acid reducer that treats esophagus damage due to gastroesophageal reflux disease (GERD) and certain conditions that cause the stomach to produce too much stomach acid. Pantoprazole is usually taken by mouth, but severe stomach acid problems may require high-dose intravenous injections. Though side effects are limited, serious problems can arise from long-term use.

Pantoprazole overview

BRAND NAMES:

  • Protonix

Generic Names:

  • Pantoprazole sodium

Uses:

  • Treats esophagus damage due to gastroesophageal reflux disease (GERD). Also treats conditions that cause your stomach to make too much acid, including Zollinger-Ellison syndrome.

Therapeutic Classes:

  • Proton pump inhibitor, gastric acid secretion inhibitor

Forms:

  • Delayed-release tablet, delayed-release granules for oral suspension (liquid), injection

How it’s taken:

  • By mouth, intravenous injection

What is Pantoprazole used for?

Pantoprazole is used to treat esophagus damage (erosive esophagitis) due to GERD. It’s both used to help heal the damage and then as a maintenance treatment to prevent relapse in the weeks or months after the esophagus has healed. Pantoprazole is also FDA-approved to treat certain conditions that cause the stomach to secrete too much acid.

What form(s) does Pantoprazole come in

  • Delayed-release tablet

    • 20 mg

    • 40 mg

  • Granules for oral suspension (liquid)

    • 40 mg

  • Injection

    • 40 mg/vial

What are common Pantoprazole doses?

  • For erosive esophagitis due to GERD in adults: 40 mg taken once per day for up to eight weeks (IV injections may be required for 7–10 days in people unable to take capsules or oral suspension); maintenance treatment is 20–40 mg taken once per day  

  • For erosive esophagitis due to GERD in children: 20 mg (for children weighing 15 kg to less than 40 kg) or 40 mg (for children weighing 40 kg or more) taken once per day for up to eight weeks 

  • For conditions that cause hypersecretion of stomach acid in adults: 40 mg taken by mouth twice per day or 80 mg IV injection twice daily

  • Find more detailed information about pantoprazole dosages, forms, and strengths here.

Common Pantoprazole prescriptions

  • Pantoprazole Sodium
    30 tablets delayed release bottle

  • Pantoprazole Sodium
    90 tablets delayed release bottle

  • Pantoprazole Sodium
    100 tablets delayed release box

  • Pantoprazole Sodium
    30 tablets delayed release disp pack

  • Pantoprazole Sodium
    40mg packet

  • Pantoprazole Sodium
    30 tablets delayed release punchcard

  • Pantoprazole Sodium
    40mg solution reconstituted

  • Pantoprazole Sodium
    20mg tablet delayed release

  • Pantoprazole Sodium
    40mg tablet delayed release

How to take Pantoprazole

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • This medicine should come with a Medication Guide. Ask your pharmacist for a copy if you do not have one.

  • Store pantoprazole tablets and packets at room temperature.

  • HOW TO TAKE PANTOPRAZOLE TABLETS 

    • Pantoprazole tablets can be taken with or without food.

    • You can use antacids when taking pantoprazole tablets.

    • Swallow the tablet whole with a drink of water. Do not split, crush, or chew it.

  • HOW TO TAKE PANTOPRAZOLE ORAL SUSPENSION 

    • Take the oral suspension 30 minutes before a meal.

    • Do not crush, split, or chew the granules.

    • Mix the granules ONLY in apple juice or applesauce. Do not use any other type of food or liquid.

    • Use the entire packet. Do not divide the contents of the packet into smaller doses.

    • Sprinkle all the packet contents on one teaspoon of applesauce or pour all the packet contents into a cup containing one teaspoon of apple juice.

    • The applesauce mixture can be taken within 10 minutes. Take sips of water while taking the mixture.

    • The apple juice mixture should be stirred for 5 seconds and taken immediately. Add more apple juice to the cup, stir, and swallow until all the granules are gone.

  • HOW TO ADMINISTER PANTOPRAZOLE ORAL SUSPENSION THROUGH A FEEDING TUBE

    • The nasogastric or gastrostomy tube must be size 16 French or larger. 

    • Remove the plunger from a 2-ounce (60 mL) catheter-tip syringe.

    • Pour all the packet contents into the syringe.

    • Add 2 teaspoons (10 mL) of apple juice to the syringe and gently tap or shake the barrel of the syringe to help empty it.

    • Add 2 teaspoons (10 mL) of apple juice again to the syringe and gently tap or shake it to help empty it.

    • Add 2 teaspoons (10 mL) of apple juice a third time to the syringe and gently tap or shake it to empty it. 

    • The goal is to make sure there are no more granules left in the syringe.

What to do if you miss a dose of Pantoprazole

  • Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. 

  • Do not take extra medicine to make up for a missed dose.

Pantoprazole contraindications

  • This medicine is not right for everyone. 

  • Do not use pantoprazole if you have had an allergic reaction to pantoprazole or other proton pump inhibitors (PPIs).

Pantoprazole warnings

  • Tell any doctor or other healthcare provider who treats you that you are using this medicine.

  • Your doctor may need lab tests at regular visits to check on the effects of this medicine, particularly if it’s taken continuously for several months. Keep all appointments.

  • Tell your doctor if you are pregnant or breastfeeding.

  • Before taking pantoprazole, tell the prescriber if you have:

    • Kidney disease

    • Liver disease

    • Low levels of magnesium, potassium, or calcium

    • Osteoporosis

  • This medicine may cause the following problems:

    • Kidney problems

    • Increased risk of bone fractures, particularly in people with osteoporosis

    • Lupus or the worsening of lupus

    • Growths in the upper portion of the stomach

    • Vitamin B12 deficiency

    • Low magnesium

  • Pantoprazole can cause C. difficile diarrhea that can occur 2 months or more after you stop taking this medicine. Call your doctor if you develop severe diarrhea, nonstop diarrhea, or bloody diarrhea. Do not take any medicine for diarrhea until you have talked to your healthcare provider.

Pantoprazole interactions

  • To avoid potentially hazardous drug interactions, tell the prescribing healthcare provider about all prescription drugs, over-the-counter medications, and supplements you are using before taking omeprazole.

  • Tell other healthcare providers you are using this medicine before they prescribe new medications.

  • Do not use pantoprazole if you are also using HIV/AIDS medicines that contain the drug rilpivirine such as Edurant, Complera, Juluca, Cabenuva, or Odefsey.

  • Pantoprazole can make other drugs less effective or increase the likelihood and severity of their side effects. Tell your doctor if you are taking: 

    • HIV/AIDS drugs, particularly rilpivirine

    • Cancer drugs

    • Blood thinners, particularly warfarin and clopidogrel

    • Drugs that make you pee (diuretics)

    • Iron supplements

    • The antifungal medications ketoconazole and itraconazole

    • The heart rhythm drug digoxin

    • The immune-suppressing drugs methotrexate and mycophenolate mofetil

  • Pantoprazole may interfere with some lab tests.

  • Find out more about pantoprazole interactions to avoid here.

Pantoprazole side effects

Serious side effects

Talk to a healthcare provider if you notice any signs or symptoms of possible serious side effects including:

  • Severe diarrhea, watery stools, bloody diarrhea, stomach pain that doesn’t go away

  • Decrease in how much you urinate, blood in the urine 

  • Seizures, dizziness, uneven heartbeat, muscle cramps or twitching

  • Hip, back, or wrist fracture

  • Joint pain, rash on your cheeks or arms that gets worse in the sun

  • Stomach pain, nausea, vomiting, weight loss

  • Blistering, peeling, red skin rash

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

Long-term use of omeprazole may cause serious side effects that may not have symptoms including:

  • Vitamin B12 deficiency

  • Low magnesium 

  • Stomach growths

Less serious side effects

  • Headache

  • Diarrhea

  • Stomach pain

  • Upper respiratory infections (in children)

Sources: