Manufactured by:

Gilead: Gilead’s LEAP program serves current Letairis® patients only. Call 866-664-5327 or visit https://www.letairis.com/patients/how-leap-can-help.

Zydus: Visit http://zydususa.com/ambrisentan/ 

Additional manufacturers: Ambrisentan 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:  Activas, Cipla, Mylan, Par, Sigmapharm, Sun, Teva and Watson.