Parametric two-tier sequential quality assurance test of delivery dose uniformity of multiple-dose inhaler and dry powder inhaler drug products.
The delivery dose uniformity is one of the most critical requirements of dry powder inhaler and metered dose inhaler products. In 1998, the U.S. Food and Drug Administration recommended a two-tier acceptance sampling plan in the Draft Guidance of Metered Dose Inhaler and Dry Powder Inhaler Drug Products Chemistry, Manufacturing and Controls. The two-tier procedure is a modification of the United States Pharmacopeia (USP) sampling plan of dose content uniformity. It employed a zero tolerance criterion. In addition, it has a near-zero probability acceptance at the second tier. In this article, a two-tier sequential tolerance interval approach is proposed that is equivalent to a two-tier two one-sided testing procedure. It controls the probability of the product delivering below a prespecified effective dose and the probability of the product delivering over a prespecified safety dose.
Tsong
Yi
Y
Office of Biostatistics/Office of Translational Sciences, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, USA. yi.tsong@fda.hhs.gov
Shen
Meiyu
M
Lostritto
Richard T
RT
Poochikian
Guiragos K
GK
D036501:Metered Dose Inhalers / Q000592:standards*; D009330:Nebulizers and Vaporizers / Q000592:standards*; D010602:Pharmacopoeias as Topic; D011208:Powders; D011336:Probability; D011786:Quality Control; D014481:United States; D014486:United States Food and Drug Administration
D011208:Powders