⚠️ Warnings
Hepatic impairment. Patients with severe hepatic impairment should have their liver enzyme levels monitored regularly, particularly during long-term treatment. If liver enzyme levels are elevated, treatment with the medicinal product should be discontinued.
Combination therapy. During combination therapy, the instructions for medical use of the corresponding medicinal products should be followed.
Gastric malignancy. The symptomatic response to pantoprazole may mask the symptoms of gastric malignancy and delay its 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 carried out.
HIV protease inhibitors. Co-administration of pantoprazole with HIV protease inhibitors (such as atazanavir) whose absorption is pH-dependent is not recommended due to significant reduction in their bioavailability (see section "Interaction with other medicinal products and other forms of interaction").
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, particularly for more than 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 a year. Serious clinical manifestations of hypomagnesaemia such as fatigue, tetany, delirium, convulsions, dizziness, and ventricular arrhythmia may occur and develop insidiously. In most patients, hypomagnesaemia (and hypocalcaemia and/or hypokalaemia associated with hypomagnesaemia) improved after magnesium replacement therapy and discontinuation of PPI therapy.
For patients expected to be on prolonged treatment, or those taking PPIs concomitantly with digoxin or medicinal products that may cause hypomagnesaemia (e.g. diuretics), magnesium levels should be measured before initiation of PPI therapy and periodically during treatment.
Bone fractures. Long-term (more than 1 year) treatment with high doses of proton pump inhibitors may moderately increase the risk of hip, wrist, and spine fractures, predominantly in the elderly or in the presence of other risk factors. Observational studies indicate that PPI use may increase the overall risk of fractures by 10–40%. Some of these may be due to other risk factors. Patients at risk of osteoporosis should receive treatment according to current clinical guidelines and should consume adequate amounts of vitamin D and calcium.
Severe cutaneous adverse reactions (SCARs)
Severe cutaneous adverse reactions have been reported in association with pantoprazole use, including erythema multiforme, cases of Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and drug reaction with eosinophilia and systemic symptoms (DRESS syndrome), which can be life-threatening or fatal. The frequency of these reactions is not known (see section "Adverse reactions").
When prescribing pantoprazole, patients should be informed about the signs and symptoms and monitored closely for skin 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, especially on sun-exposed areas of the skin, accompanied by arthralgia, the patient should seek medical attention promptly, and the prescriber should consider whether discontinuation of Nolpaza® is necessary. The occurrence of subacute cutaneous lupus erythematosus during prior 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, Nolpaza® treatment should be temporarily discontinued at least 5 days before CgA measurements (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 PPI therapy.
Information regarding excipients
Nolpaza® contains sorbitol. Patients with rare hereditary fructose intolerance should not take this medicinal product.