NCT00541216.

Trial name or title	Ephedrine for the treatment of congenital myasthenia
Methods	Safety/efficacy study using a randomised, double‐blind, placebo‐controlled single cross‐over design
Participants	Male or female COLQ patients
Interventions	Ephedrine (5 weeks) versus placebo (5 weeks)
Outcomes	Strength, fatigability, quality of life, spirometry
Starting date	October 2007
Contact information	Principal Investigator: Simon Edvardson Hadassah Medical Organization
Notes	Enrolment by invitation only