'Naturalistic' Trial In GSK's Nicotine Mouth Spray NDA Historic For OTC NRTs

What FDA describes as "real world" trial was "designed to include a broader patient population and without providing any verbal behavioral support," says GSK. "Historically, the FDA has not required OTC NRTs to demonstrate efficacy in naturalistic conditions," it says.

Chances for approval of GlaxoSmithKline PLC's new drug application for a mouth spray nicotine replacement therapy in the US could be hindered by the results of an actual use trial included in its proposal, a type of study not previously required for OTC NRTs.

GSK noted the Food and Drug Administration recommended an actual use trial in addition to a trial with subjects guided...

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