Protonix is a brand-name prescription drug containing pantoprazole, a stomach acid reducer. It works by partly blocking the stomach's ability to secrete acid and is used to treat various conditions caused by stomach acid. Most people take daily tablets or liquid Protonix. Still, healthcare professionals use high-dose intravenous injections for people with very severe stomach acid conditions or who can’t take oral medications.
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Protonix, Protonix I.V.
Pantoprazole sodium
Treats gastroesophageal reflux disease (GERD), a damaged esophagus, and conditions that cause your stomach to make too much acid, including Zollinger-Ellison syndrome.
Proton pump inhibitor (PPI), gastric acid secretion inhibitor
Delayed-release tablet, delayed-release granules for oral suspension, injection
By mouth, intravenous injection
The U.S. Food and Drug Administration (FDA) has approved Protonix to treat damage to the esophagus (erosive esophagitis) due to gastrointestinal reflux disease (GERD) and to treat conditions that cause excessive stomach acid production. Healthcare professionals may use it off-label to treat symptomatic GERD, frequent heartburn, or ulcers or to eradicate an H. pylori infection.
Delayed-release tablet
20 mg
40 mg
Delayed-release granules for oral suspension
40 mg
Injection
40 mg/vial
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 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, including off-label dosages.
Protonix
30 tablets delayed release bottle
Protonix
40mg packet
Protonix
40mg solution reconstituted
Protonix
20mg tablet delayed release
Protonix
40mg tablet delayed release
Your doctor will tell you how much medicine to use. Use only directed.
This medicine should come with a Medication Guide. If you do not have one, ask your pharmacist for a copy.
How to take Protonix delayed-release tablets:
Protonix tablets can be taken with or without food.
You can take an antacid at the same time.
Swallow the delayed-release tablet whole with a drink of water. Do not split, crush, or chew it.
Tell the doctor if you are having problems swallowing a Protonix tablet.
Store Protonix tablets at room temperature.
How to prepare and take Protonix oral suspension:
Take the oral suspension 30 minutes before a meal.
Protonix oral suspension granules come in single-dose packets.
Use the entire packet. Do not divide the contents of the packet into smaller doses.
Do not crush, split, or chew the granules.
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. Do not mix it with any other kind of liquid or food.
Take the applesauce mixture with sips of water within 10 minutes of preparing it.
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.
Store Protonix granules at room temperature. Don’t open the packets until ready to prepare a dose.
Find instructions on how to administer Protonix granules through a feeding tube here.
Take a missed dose as soon as you remember unless it’s almost time for the next dose. In that case, skip the missed dose and take the next dose as scheduled.
Take only one dose at a time.
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).
Tell any doctor or other healthcare provider who treats you that you are using this medicine.
Your doctor may need to perform regular lab tests to check on the effects of this medicine, particularly if it’s taken long-term. Keep all appointments.
Tell your doctor if you are pregnant or breastfeeding.
Before taking Protonix, tell the prescriber if you have:
Kidney disease
Liver disease
Low levels of magnesium, potassium, zinc, or calcium
Osteoporosis
Lupus
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
Stomach polyps
Vitamin B12 deficiency (when used long-term)
Low magnesium, low calcium, or low potassium
Protonix can cause severe diarrhea caused by a bacteria called C. difficile. The diarrhea can occur 2 months or more after you stop taking this medicine. Call your doctor if the diarrhea is severe, nonstop, or bloody. Do not take any diarrhea medicine until consulting with a doctor.
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 Protonix.
Tell other healthcare providers you are using this medicine before they prescribe new medications.
Protonix can never be safely taken with HIV/AIDS medicines that contain the drug rilpivirine. Drugs that contain rilpivirine are sold under the brand names Edurant, Complera, Juluca, Cabenuva, and Odefsey.
Before starting Protonix, tell your doctor if you are taking:
HIV/AIDS drugs
Cancer drugs
Blood thinners, particularly warfarin
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
The antibiotics ampicillin, cefuroxime, or cefpodoxime
Protonix may interfere with some lab tests.
Some foods that worsen stomach acid or acid reflux may need to be avoided if you’re taking a proton pump inhibitor like Protonix.
Find out more about pantoprazole interactions to avoid here.
Serious side effects
Talk to a doctor if you notice any signs or symptoms of a possible serious side effect, 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, jitteriness, weakness, muscle cramps, spasms
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
Pain, tenderness, or swelling in your arm or leg
Blistering, peeling, red skin rash
Fever, chills, shortness of breath, aches, enlarged lymph nodes
Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Protonix may cause serious side effects that may not have symptoms. Sometimes, the only way to spot these problems is through blood or other medical tests. These include:
Vitamin B12 deficiency
Low magnesium
Stomach growths (fundic polyps)
Less serious side effects
Headache
Diarrhea
Nausea
Stomach pain
Vomiting
Gas
Dizziness
Joint pain
Upper respiratory infections (in children)
Fever (in children)
Find more detailed information about Protonix side effects here.
Pantoprazole, StatPearls
Pantoprazole drug summary, Prescriber’s Digital Reference (PDR)
Protonix I.V. pantoprazole sodium injection, NIH National Library of Medicine
Protonix pantoprazole sodium delayed-release tablet, pantoprazole delayed-release granule, NIH National Library of Medicine
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