PRN means Pro Re Nata As needed in FDA
Similar to PRN
AD - Action Duead lib - as much as needed
ADA - American Dental Association
ADA - Americans with Disabilities Act of 1990
ADAA - Animal Drug Availability Act of 1996
ADaM - Analysis Dataset Model
ADAMHA - Alcohol, Drug Abuse, and Mental Health Administration now SAMHSA
View all in FDA