188
Participants
Start Date
October 31, 2003
Primary Completion Date
March 31, 2005
Study Completion Date
May 31, 2005
Bosentan 62.5 mg
Oral tablets containing 62.5 mg of bosentan
Bosentan 125 mg
Oral tablets containing 125 mg of bosentan
Placebo
Oral tablets matching bosentan 62.5-mg tablets and bosentan 125-mg tablets
Lead Sponsor
Actelion
INDUSTRY