Actelion: Call Actelion Pathways at 866-228-3546 or visit actelionpathways.com/.
Zydus: Visit zydususa.com/bosentan/.
Additional manufacturers: Bosentan is manufactured by multiple companies. At this time, however, PHA is only aware of the manufacturer assistance programs mentioned above. Additional manufacturers include but are not limited to: Alvogen; Amneal; Cotherix; Hikma; Natco; Par; Sun; Watson and West-Ward.