Question for United American Pharmaceuticals

URGENT!! URGENT!! where can i buy duavent inhalers for my mom who is very much dependent on your inhalers? we have searched in all mercury drug stores and watsons store all over manila (and nearby provinces), and they are out...mom's doctor is out of the country so we can not ask him for a replacement...
PLEASE.. PLEASE.. RESPOND ASAP...
THANK YOU..