• Basic Info
• Top Questions
• Clinical Info
• Interactions

Before taking pantoprazole, tell your doctor if you are using any of the following drugs:

• atazanavir (Reyataz);

• a blood thinner such as warfarin (Coumadin);

• ampicillin (Omnipen, Principen);

• ketoconazole (Nizoral); or

• iron (Feosol, Mol-Iron, Fergon, Femiron, others).

This list is not complete and there may be other drugs that can interact with pantoprazole. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Less serious side effects are more likely to occur, such as:

• nausea, vomiting;

• gas, stomach pain;

• diarrhea; or

• headache.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.