FDA’s MUsT Draft Guidance Extends Challenge To Wider OTC Drug Industry
This article was originally published in The Rose Sheet
It’s known that challenges posed by FDA-advised maximal usage trials have been the bane of OTC sunscreen and antimicrobial drug ingredient sponsors of late, but new draft guidance from the agency signals that MUsTs will be expected generally from companies looking to add topical ingredients to OTC drug monographs.
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"FDA meetings with an individual manufacturer regarding inclusion of ingredients in the monograph ... could have broad applicability, and hence are generally public," CDER says. But, "regulations permit any person to request a private meeting, and FDA will make reasonable efforts to accommodate such requests."
FDA final guidance on MUsTs for topically applied ingredients for OTC drug monograph affirms draft, not incorporating changes pushed by industry. CHPA says FDA’s MUsT study published recently finding sunscreen actives penetrate skin to bloodstream at higher levels than previously believed demonstrates "value" of test method.
FDA aims to publish a tentative final monograph for OTC sunscreen drugs in 2019 that identifies “data gaps that FDA believes need to be filled” for 16 currently listed UV filters to support their continued marketing in the US without new drug approvals.