[Code of Federal Regulations]
[Title 21, Volume 5]
[Revised as of April 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR312.85]

[Page 82]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 312_INVESTIGATIONAL NEW DRUG APPLICATION--Table of Contents
 
    Subpart E_Drugs Intended to Treat Life-threatening and Severely-
                         debilitating Illnesses
 
Sec.  312.85  Phase 4 studies.

    Concurrent with marketing approval, FDA may seek agreement from the 
sponsor to conduct certain postmarketing (phase 4) studies to delineate 
additional information about the drug's risks, benefits, and optimal 
use. These studies could include, but would not be limited to, studying 
different doses or schedules of administration than were used in phase 2 
studies, use of the drug in other patient populations or other stages of 
the disease, or use of the drug over a longer period of time.