Pantoprazole Side Effects

Headache or diarrhea may occur. Redness, pain, or swelling at the injection site may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: symptoms of a low magnesium blood level (such as unusually fast/slow/irregular heartbeat, persistent muscle spasms, seizures), signs of lupus (such as rash on nose and cheeks, new or worsening joint pain).

This medication may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a type of bacteria. Do not use anti-diarrhea or opioid medications if you have any of the following symptoms because these products may make them worse. Tell your doctor right away if you develop: persistent diarrhea, abdominal or stomach pain/cramping, fever, blood/mucus in your stool.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, signs of kidney problems (such as change in the amount of urine).

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Clostridioides difficile infection
hypercholesterolemia
hypertriglyceridemia
hypomagnesemia
hyponatremia
pancytopenia
thrombocytopenic disorder
agranulocytosis
leukopenia
neutropenic disorder
acute confusion
blurred vision
thrombophlebitis
bronchospastic pulmonary disease
xerostomia
constipation
hepatocellular damage
hepatic failure
hepatitis
interstitial nephritis
erythema multiforme
toxic epidermal necrolysis
Stevens-Johnson syndrome
subacute cutaneous lupus erythematosus
pruritus of skin
urticaria
systemic lupus erythematosus
arthralgia
rhabdomyolysis
myalgia
drowsy
hallucinations
vertigo
dizziness
insomnia
fatigue
pain
dysgeusia
skin rash
headache disorder
nausea
vomiting
flatulence
diarrhea
abnormal hepatic function tests
fracture
anaphylaxis
angioedema
injection site sequelae
general weakness
malaise
acute abdominal pain
increased creatine kinase level
jaundice
benign fundic gland polyposis of stomach
loss of taste

Drug Interactions

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

A product that may interact with this drug is: methotrexate (especially high-dose treatment).

Some products need stomach acid so that the body can absorb them properly. Pantoprazole decreases stomach acid, so it may change how well these products work. Some affected products include ampicillin, atazanavir, erlotinib, nelfinavir, pazopanib, rilpivirine, certain azole antifungals (itraconazole, ketoconazole, posaconazole), among others.

This medication may interfere with certain laboratory tests (including urine test for tetrahydrocannabinol-THC, blood test to find certain tumors), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.