⚠️ Warnings
Hepatic impairment. Patients with severe hepatic impairment should have their liver enzymes monitored regularly, particularly during long-term treatment. If liver enzyme levels become elevated, treatment with the medicinal product must be discontinued.
Combination therapy. During combination therapy, the instructions for use of the respective medicinal products must be followed.
Gastric malignancy. The symptomatic response to pantoprazole may mask the symptoms of gastric malignancy and delay their diagnosis. In the presence of alarm symptoms (e.g. significant unintentional weight loss, recurrent vomiting, dysphagia, haematemesis, anaemia, melaena), as well as when a gastric ulcer is suspected or present, malignancy must be excluded.
If symptoms persist despite adequate treatment, further investigation should be considered.
HIV protease inhibitors. Concomitant use of pantoprazole with HIV protease inhibitors (such as atazanavir) whose absorption is dependent on intragastric pH is not recommended, due to a significant reduction in their bioavailability (see section "Interactions with other medicinal products and other forms of interactions").
Effect on vitamin B12 absorption.
Pantoprazole may reduce the absorption of vitamin B12 (cyanocobalamin) due to hypo- or achlorhydria. This should be considered in patients with reduced body weight or risk factors for decreased vitamin B12 (cyanocobalamin) absorption, especially during long-term treatment or in the presence of corresponding clinical symptoms.
Long-term treatment. During long-term treatment, especially exceeding 1 year, patients should remain under regular medical supervision.
Gastrointestinal infections caused by bacteria.
Treatment with the medicinal product may slightly increase the risk of gastrointestinal infections caused by bacteria such as Salmonella and Campylobacter or C. difficile.
Hypomagnesaemia. Rare cases of severe hypomagnesaemia have been reported in patients treated with PPIs, such as pantoprazole, for at least 3 months and in most cases for 1 year. The following serious clinical manifestations of hypomagnesaemia may develop insidiously: fatigue, tetany, delirium, convulsions, dizziness, and ventricular arrhythmia. Hypomagnesaemia may lead to hypocalcaemia and/or hypokalaemia (see section "Special warnings and precautions for use"). In cases of hypomagnesaemia (and hypocalcaemia and/or hypokalaemia associated with hypomagnesaemia), most patients improved after magnesium replacement therapy and discontinuation of PPI treatment.
Patients requiring long-term therapy or those taking PPIs concomitantly with digoxin or medicinal products that may cause hypomagnesaemia (e.g. diuretics) should have their magnesium levels determined before initiating PPI therapy and periodically during treatment.
Bone fractures. Long-term treatment (exceeding 1 year) with high-dose proton pump inhibitors may moderately increase the risk of hip, wrist, and spine fractures, predominantly in elderly patients or in the presence of other risk factors. Observational studies suggest that proton pump inhibitors may increase the overall risk of fractures by 10–40%. Some of these may be attributable to other risk factors. Patients at risk of developing osteoporosis should receive treatment in accordance with current clinical guidelines and should have an adequate intake of vitamin D and calcium.
Severe cutaneous adverse reactions (SCARs).
Severe cutaneous adverse reactions have been reported with the use of pantoprazole, including erythema multiforme, cases of Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS syndrome), which may be life-threatening or fatal. The frequency of occurrence of these reactions is not known (see section "Adverse reactions").
When prescribing pantoprazole, patients should be informed about the signs and symptoms and closely monitored for cutaneous reactions. If symptoms suggestive of these severe cutaneous reactions appear, pantoprazole should be discontinued immediately and alternative treatment considered.
Subacute cutaneous lupus erythematosus. The use of proton pump inhibitors has been associated with very rare cases of subacute cutaneous lupus erythematosus. If lesions occur, particularly on sun-exposed skin areas, accompanied by arthralgia, the patient should seek prompt medical attention, and the prescriber should consider whether discontinuation of Nolpaza® is necessary. The occurrence of subacute cutaneous lupus erythematosus during previous PPI therapy may increase the risk of its development with other proton pump inhibitors.
Effect on laboratory test results.
Elevated chromogranin A (CgA) levels may interfere with diagnostic investigations for neuroendocrine tumours. To avoid such interference, treatment with Nolpaza® should be temporarily discontinued at least 5 days before CgA level assessment (see section "Pharmacodynamics"). If CgA and gastrin levels have not returned to the normal range after the initial measurement, repeat measurements should be performed 14 days after discontinuation of proton pump inhibitor therapy.
Information regarding excipients.
Nolpaza® contains sorbitol. Patients with rare hereditary fructose intolerance should not use this medicinal product.