Overview Safety, Efficacy and Pharmacokinetics of ALD403 Status: Completed Trial end date: 2014-02-01 Target enrollment: Participant gender: Summary The purpose of this study is to assess the safety, pharmacokinetics and efficacy of a single dose of ALD403 in the prevention of migraine headache in frequent episodic migraineurs for 24 weeks. Phase: Phase 1 Details Lead Sponsor: Alder Biopharmaceuticals, Inc.