Pantoprazole oral tablet does not cause drowsiness. However, it can cause other side effects. More common side effects. The more common side effects that can occur with pantoprazole include: Diarrhea occurred most frequently in patients given quadruple therapy (pantoprazole, bismuth, metronidazole, tetracycline) for Helicobacter pylori infections, but was also very common in triple therapy (pantoprazole, amoxicillin, clarithromycin). Side effects include gas, joint pain, and headaches. Dosage for Protonix depends on the condition being treated. Pantoprazole is available OTC and in generic form. Dosage for Protonix depends on the condition being treated. Easy-to-read patient leaflet for Pantoprazole Injection. Includes indications, proper use, special instructions, precautions, and possible side effects. Includes indications, proper use, special instructions, precautions, and possible side effects. Although a side effect may be thought of as common, seek medical attention if any of them become severe or persist over time. If you feel different than you normally do on the medication or you experience any side effects that seem uncommon or severe, immediately get medical attention. It is best to keep track of pantoprazole side effects in a daily journal by listing the reaction, when you. Protonix Delayed-Release Oral Suspension and Delayed-Release Tablets (pantoprazole sodium) is a proton pump inhibitor (PPI) used for short-term treatment (less than 10 days) of gastroesophageal reflux disease and a history of erosive esophagitis in adult patients. Find information about common, infrequent and rare side effects of Pantoprazole Oral. Protonix (pantoprazole) The most common side effects from taking Protonix (pantoprazole) are headaches, constipation, gas , and nausea. There is a long list of potential side effects that are really rather rare but these are the ones I have seen in clinical practice. If you’re experiencing stomach aches or abdominal pain while using pantoprazole, understand that this is the fourth most common side effect of the medication. In some cases, stomach pain may be accompanied by other side effects such as diarrhea, nausea, vomiting, and/or burping.