NCT00685815.

Trial name or title	Intravenous iron metabolism in restless legs syndrome
Methods	Double‐blind, randomised controlled trial
Participants	36 adults with RLS
Interventions	500 mg of IV ferric carboxymaltose given on two consecutive days
Outcomes	RLS symptoms
Starting date	November 2006. Completed in 2012 per clinical trials.gov but appears to be as‐yet unpublished
Contact information	Christopher J Earley, MD, PhD, Johns Hopkins University
Notes	Registered at www.clinicaltrials.gov