Manufacture Business Practice, Clinical Trials, Drug Delivery, Ingredients, Formulation, Small Molecules, Trends & Forecasts

Laser diffraction and automated imaging: complementary techniques for nasal spray development

The techniques of laser diffraction and automated particle imaging support the fast, cost-effective development of nasal spray products, simultaneously providing the data required for regulatory compliance. This paper examines their application.

08/20/2015

Nasal spray products are increasingly valued for delivering systemic as well as locally-acting therapies, most notably hormone and migraine treatments. The large surface area and rich blood supply of the nasal passages aid the rapid absorption of drug entities, with their close proximity to the central nervous system being of particular benefit.

The regulatory guidance for nasal sprays emphasizes the importance of testing the device and the formulation together since it is in combination that they define the unique characteristics of the delivered dose. The success of drug delivery is strongly influenced by the particle size of the delivered droplets, and for suspension formulations the particle size of the suspended active as well.

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