Abstract
Background and aimsHyponatremia (HN) is the most common disorder of electrolytes encountered in clinical practice. Considering that HN is associated with high morbidity and mortality, is important to identify treatments for these patients. The therapeutic approaches for HN depend on the severity and the character of the pathology (acute vs. chronic). Among intervention strategies, oral urea represents an effective, safe, and well-tolerated therapeutic approach in the management of chronic hyponatremia. Oral ureal is commonly prepared as a galenic formulation that is usually associated with distaste problems. A double-blind, randomized, cross-over clinical trial was conducted to evaluate and compare the palatability of two different urea formulations: a commercial urea formulation and a galenic one (trial registered on www.isrctn.com, number: ISRCTN18369035). Materials and methodsThirty-six healthy subjects (18 female and 18 male, median age 55 years) were enrolled in the study and randomized to consume 7 g of formulation A (commercial formulation) or formulation B (galenic formulation) twice a day away from meals, solubilizing the products in 125 mL of water (T0). After three days of a wash-out, the formulations were crossed-over and consumed twice a day away from meals (T4). After the consumption of products, both in the morning and the evening, participants completed a specific questionnaire to evaluate the products’ palatability. ResultsThe commercial formulation was globally more appreciated than the galenic one, in terms of smell, taste, and aftertaste. The commercial formulation was better accepted as a potential treatment in 44% of subjects compared to 14% of subjects for galenic formulation. ConclusionsThe clinical trial confirmed the better palatability of the commercial oral urea formulation, containing citrus flavor, which therefore represents a therapeutic strategy that could improve adherence to the therapy in chronic patients with hyponatremia.
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