The extemporaneous aprepitant oral suspension formulation described is physically and chemically stable for at least 90 days when refrigerated. The bioavailability of this formulation is unknown.
Background Temozolomide oral suspension is not commercially available. Objective To evaluate the stability of three temozolomide 10 mg/mL suspensions prepared in Oral Mix SF® in three container types stored at 4°C and 23°C. Methods Using commercial capsules, three separate batches of three different temozolomide 10 mg/mL formulations (Oral Mix SF® with PK-30; PK-30 and citric acid; and neither PK-30 nor citric acid) were made and stored in three container types (amber glass bottles, amber polyethylene terephthalate bottles, and polypropylene oral syringes). The aliquots in each container type were stored protected from light, half at 25°C and half at 4°C. On study days 0, 5, 8, 14, 21, 28, 35, 42, and 56, physical properties of samples from each container type at each temperature were assessed, and the temozolomide concentration was determined using a stability-indicating method. The beyond-use-date (time to achieve 90% of initial concentration calculated using the lower limit of the 95% confidence interval of the observed degradation rate) was calculated. Results Samples stored at 25°C turned from white to orange within seven days. Temozolomide crystals were observed in all samples. Concentration changes due to study day and temperature (p < 0.001) were observed but not due to container (p = 0.991) or formulation (p = 0.987). The beyond-use-date of all formulations in all container types was 56 days at 4°C and 6 days at 23°C. Conclusions We recommend that these temozolomide 10 mg/mL formulations be stored at 4°C and be assigned a beyond-use-date of 30 days.
<p>ABSTRACT</p><p>Background: Domperidone liquid for oral administration is not commercially available in Canada, but is needed for patients who cannot swallow intact tablets.</p><p>Objective: To evaluate the stability of domperidone 5 mg/mL suspensions prepared in Oral Mix vehicle and stored, for up to 91 days, in amber polyvinylchloride (PVC) bottles, amber glass bottles, or amber poly - ethylene terephthalate (PET) bottles at 4°C or 25°C or in polypropylene oral syringes at 25°C.</p><p>Methods: Three separate 300-mL batches of domperidone suspension 5 mg/mL were prepared with Oral Mix vehicle. Fifty-millilitre aliquots of the suspension were stored in 100-mL bottles (amber PVC, amber glass, or amber PET). Half of the bottles of each type were stored at 25°C and half at 4°C. On study days 0, 1, 2, 4, 7, 10, 14, 21, 28, 35, 42, 49, 63, 77, and 91, domperidone concentration was determined, with a validated reverse-phase, stability-indicating liquid chromatographic method, in samples drawn from each type of container stored at each temperature. In addition, 1.5-mL aliquots of a fourth 100-mL batch of suspension were stored in 3-mL oral syringes at 25°C and were tested on the same study days.</p><p>Results: The concentration of domperidone in all study samples remained above 93% of initial concentration after storage for 91 days. The percent remaining on day 91, based on fastest degradation rate (as represented by the lower limit of the 95% confidence interval [CI]), was at least 92.3% for suspensions stored at 4°C in PVC, glass, and PET bottles. With storage at 25°C, suspensions in PVC and glass bottles retained more than 90% of initial concentration, whereas suspensions in PET bottles and plastic syringes retained 88.9% and 88.0% of initial concentration, respectively.</p><p>Conclusions: Because suspensions of domperidone in PET bottles and oral syringes retained less than 90% of their initial concentration on day 91 (based on the 95% CI), it is suggested that such suspensions be stored at 4°C or 25°C in any bottle type or syringe with an assigned beyond-use date not exceeding 75 days.</p><p>RÉSUMÉ</p><p>Contexte : La dompéridone sous forme liquide pour administration orale n’est pas disponible sur le marché au Canada, mais elle est nécessaire pour les patients incapables d’avaler des comprimés entiers.<br />Objectif : Évaluer la stabilité de suspensions de dompéridone de 5 mg/mL préparées dans l’excipient Oral Mix et conservées jusqu’à 91 jours dans des flacons de polychlorure de vinyle (PVC) ambré, de verre ambré ou de polyéthylène téréphtalate (PET) ambré à 4 °C ou à 25 °C ou dans des seringues orales de polypropylène à 25 °C.</p><p>Méthodes : Trois différents lots de 300 mL de suspension de dompéridone de 5 mg/mL ont été préparés à l’aide de l’excipient Oral Mix. Des aliquotes de 50 mL de la suspension ont été entreposées dans des flacons de 100 mL de PVC ambré, de verre ambré ou de PET ambré. La moitié des flacons de chaque type était conservée à 25 °C et l’autre moitié était conservée à 4 °C. Aux jours 0, 1, 2, 4, 7, 10, 14, 21, 28, 35, 42, 49, 63, 77 et 91 de l’étude, les concentrations de dompéridone ont été évaluées sur des échantillons tirés de chaque type de flacons conservés aux deux températures à l’aide d’une épreuve validée mesurant la stabilité par chromatographie liquide en phase inverse. De plus, des aliquotes de 1,5 mL provenant d’un quatrième lot de suspension ont été entreposées dans des seringues orales de 3 mL à 25 °C et ont été analysées aux mêmes jours.</p><p>Résultats : Les concentrations de dompéridone dans l’ensemble des échantillons de l’étude conservaient plus de 93 % de la concentration initiale après un entreposage de 91 jours. Le pourcentage restant au jour 91, selon le taux de dégradation le plus rapide (correspondant à la limite inférieure de l’intervalle de confiance (IC) de 95 %), atteignait au moins 92,3 % pour les suspensions entreposées à 4 °C dans les flacons de PVC, de verre et de PET. Lorsqu’elles étaient entreposées à 25 °C, les suspensions contenues dans les flacons de PVC ou de verre conservaient plus de 90 % de la concentration initiale alors que les suspensions contenues dans les flacons de PET ou les seringues de plastique conservaient respectivement 88,9 % et 88,0 % de la concentration initiale.</p><p>Conclusions : Comme les suspensions entreposées dans les flacons de PET et les seringues orales conservaient moins de 90 % de leur concentration initiale au jour 91 (selon l’IC de 95 %), on suggère d’entreposer les suspensions de dompéridone à 4 °C ou à 25 °C dans n’importe lequel contenant en l’accompagnant d’une date limite d’utilisation ne dépassant pas 75 jours.</p>
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