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Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride

Author(s):  Wu George, Yeung Stanley, Chen Frank

Issue:  Jan/Feb 2017 - Volume 21, Number 1
View All Articles in Issue

Page(s):  76-82

Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 1
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 2
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 3
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 4
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 5
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 6
Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride Page 7

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Abstract:  Neurokinin-1 receptor antagonist, 5-hydroxytryptamine-3 RA, and dexamethasone combination therapy is standard of care for the prevention of chemotherapy-induced nausea and vomiting. Herein we describe the physical and chemical stability of rolapitant injectable emulsion 166.5 mg in 92.5 mL (185 mg hydrochloride salt) admixed with palonosetron injection 0.25 mg in 5 mL (0.28 mg hydrochloride salt). Admixtures were prepared and stored in two types of container closures (110-mL Crystal Zenith plastic and glass bottles) and four types of intravenous administration sets (or intravenous tubing sets). Assessment of the physical and chemical stability was conducted on the admixtures in the ready-to-use container closure systems as supplied by the manufacturer, stored at room temperature (20°C to 25°C under fluorescent light), and evaluated at 0, 1, and 6 hours; 1 and 2 days; and under refrigeration (2°C to 8°C protected from light) after 1, 3, and 7 days. For admixtures in intravenous tubing sets, the assessment of physicochemical stability was performed after 0 and 7 hours of storage at 20°C to 25°C initially, and then after 20 hours (total 27 hours) at 2°C to 8°C protected from light. Physical stability was assessed by visual examination of the container contents under normal room light, and measuring turbidity and particulate matter. Chemical stability was assessed by measuring the pH of the admixture and determining drug concentrations and impurity levels with high-performance liquid chromatographic analysis. The results indicated that all samples were physically compatible throughout the duration of the study. The pH, turbidity, and particulate matter of the admixture stayed within narrow and acceptable ranges. Rolapitant admixed with palonosetron was chemically stable when admixed in glass and Crystal Zenith bottles for at least 48 hours at room temperature and for 7 days under refrigeration, as well as in the four selected intravenous tubing sets for 7 hours at 20°C to 25°C and then for 20 hours at 2°C to 8°C. No loss of potency of any admixed components occurred in the samples stored at the two temperature ranges and time period studied.

Related Keywords: George Wu, PhD, Stanley Yeung, PharmD, Frank Chen, PhD, rolipatant, neurokinin-1 receptor antagonist, NK-1 inhibitor, 5-hydroxytryptamine-3 receptor antagonist, 5-HT3 inhibitor, palonosetron hydrochloride, drug combination, drug admixtures, chemotherapy-induced nausea and vomiting, serotonin pathway, substance P/NK-1 pathway, emesis, antiemetic agents, storage containers, intravenous tubing sets, stability, compatibility, injectable emulsion compound

Related Categories: CANCER AND AIDS, GASTROENTEROLOGY, PARENTERALS, PEER-REVIEWED, STABILITIES, COMPATIBILITIES, STORAGE

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