Pharmacokinetic, Safety, Tolerability, and Clinical Effect of Topical Umeclidinium in Primary Axillary Hyperhidrosis

This is a double blind (sponsor unblind), repeat dose, randomized, parallel group, placebo controlled study to assess the pharmacokinetic parameters, safety, tolerability, and clinical effect of topically applied umeclidinium following once daily topical administration to axilla for 14 days in subjects with primary axillary hyperhidrosis. This study will determine whether topically applied umeclidinium can decrease hyperhidrosis without systemic anticholinergic effects (ie. in the range or lower to those obtained after inhaled route) at the highest possible concentration. Subjects will be dosed by site staff each night immediately before bedtime for 14 days. Subjects will complete gravimetric and Hyperhidrosis Disease Severity Scale (HDSS) measurements, patient reported outcomes (PRO), safety assessments, and/or pharmacokinetic sampling. Follow up visits will occur on days 15, 16, 19, 23 and 28. The total duration of the study will be approximately 6 to 8 weeks. The study is planned to enroll approximately 24 subjects.