• Fatemeh Famouri, Forough Derakhshani, Yahya Madihi, and Armindokht Shahsanai.
• Department of Pediatric, Isfahan University of Medical Sciences, Isfahan, Iran.
• J Res Med Sci. 2020 Jan 1; 25: 106.

BackgroundGastroesophageal reflux disease (GERD) is one of the common gastrointestinal diseases with various side effects. Proton pump inhibitor (PPI) drugs are widely used for their treatment and long-term ingestion, which results in an electrolyte imbalance. This study investigates the changes in serum magnesium, calcium, sodium, and potassium after long-term use of omeprazole in children.Materials And MethodsThis cross-sectional study was conducted in 2016-2017 on 97 children and adolescents, aged 1-15 years, with GERD, in Isfahan, Iran. Enrolled were patients visiting a referral pediatric gastroenterology clinic (Imam Hossein and Amin Hospitals) examined by an academic pediatric gastroenterologist. Before and 4 weeks after omeprazole administration, clinical manifestations including lethargy, muscle spasm, dyspnea, nausea, vomiting, abnormal heartbeat and deep tendon reflexes, and Chvostek and Trousseau signs were recorded in a data-gathering form. In addition, fasting serum magnesium, calcium, sodium, and potassium were measured.ResultsThe McNemar test results showed that omeprazole can reduce sodium, calcium, and magnesium levels statistically significantly (P < 0.05), but potassium levels do not have a meaningful reduction (P > 0.05).ConclusionConsumption of omeprazole might cause asymptomatic hypomagnesemia, hypocalcemia, and hypernatremia in children. Such side effects should be considered in the follow-up of children under treatment with this medication.Copyright: © 2020 Journal of Research in Medical Sciences.

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