Stability of Allopurinol, Amitriptyline Hydrochloride, Carbamazepine, Domperidone, Isoniazid, Ketoconazole, Lisinopril, Naproxen, Paracetamol (Acetaminophen), and Sertraline Hydrochloride in SyrSpend SF PH4 Oral Suspensions

Polonini, Hudson C; Loures, Sharlene; de, Araujo Edson Peter; Brandão, Marcos Antônio F; Ferreira, Anderson O

Abstract

Stability of Allopurinol, Amitriptyline Hydrochloride, Carbamazepine, Domperidone, Isoniazid, Ketoconazole, Lisinopril, Naproxen, Paracetamol (Acetaminophen), and Sertraline Hydrochloride in SyrSpend SF PH4 Oral Suspensions

Author(s): Polonini Hudson C, Loures Sharlene, de Araujo Edson Peter, Brandão Marcos Antônio F, Ferreira Anderson O

Issue: Sep/Oct 2016 - Volume 20, Number 5

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Page(s): 426-434

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Abstract

Oral liquids are safe alternatives to solid dosage forms, notably for elderly and pediatric patients that present dysphagia. The use of ready-to-use suspending vehicles such as SyrSpend SF PH4 is a suitable resource for pharmacists as they constitute a safe and timesaving option that has been studied often. The objective of this study was to evaluate the stability of 10 commonly used active pharmaceutical ingredients (allopurinol 20 mg/mL; amitriptyline hydrochloride 10 mg/mL; carbamazepine 25 mg/mL; domperidone 5 mg/mL; isoniazid 10 mg/mL; ketoconazole 20 mg/mL; lisinopril 1 mg/mL; naproxen 25 mg/mL; paracetamol [acetaminophen] 50 mg/mL; and sertraline hydrochloride 10 mg/mL) compounded in oral suspensions using SyrSpend SF PH4 as the vehicle throughout the study period and stored both at controlled refrigerated (2°C to 8°C) and room temperature (20°C to 25°C). Stability was assessed by means of measuring the percent recovery at varying time points throughout a 90-day period. The quantification of the active pharmaceutical ingredients was performed by high-performance liquid chromatography through a stability-indicating method. Methods were adequately validated. Forced-degradation studies showed that at least one parameter influenced the stability of the active pharmaceutical ingredients. All suspensions were assayed and showed active pharmaceutical ingredient contents between 90% and 110% during the 90-day study period. Although the forced-degradation experiments led to visible fluctuations in the chromatographic responses, the final preparations were stable in the storage conditions. The beyond-use dates of the preparations were found to be at least 90 days for all suspensions, both for controlled refrigerated temperature and room temperature. This confirms that SyrSpend SF PH4 is a stable suspending vehicle for compounding with a broad range of different active pharmaceutical ingredients for different medical usages.

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