PecSys: in situ gelling system for optimised nasal drug delivery.

PecSys (PS) is a proprietary pectin-based drug delivery system designed to gel when applied to mucosal surfaces and with potential areas of application for drugs used in local and systemic disease therapy. The current area of focus is intranasal drug delivery where PS is being used to optimise absorption of lipophilic drugs into the systemic circulation. Pectin is described as GRAS (generally regarded as safe) with an excellent regulatory position through its long history of pharmaceutical and food usage. Tests to measure the functional gelling properties of pectin raw material and PS have been devised and validated. The PS-based products at the most advanced stages of development are intranasal formulations containing opioid analgesics intended to provide rapid pain relief with simple and convenient dosing and minimal side effects. The profile of such drugs may not be optimal through current routes of delivery and the ability of PS to modulate their pharmacokinetic profiles, such as attenuation of the peak plasma concentration (Cmax), has been demonstrated in clinical testing. The lead product using PS is a fentanyl nasal spray formulation (NasalFent), which has successfully met the primary objective in a pivotal Phase III clinical study and is scheduled for regulatory filings in the first half of 2009.