211.150—Distribution procedures.
         Written procedures shall be established, and followed, describing the distribution of drug products. They shall include:
    
    
        
        (a) 
         A procedure whereby the oldest approved stock of a drug product is distributed first. Deviation from this requirement is permitted if such deviation is temporary and appropriate.
    
    
        
        (b) 
         A system by which the distribution of each lot of drug product can be readily determined to facilitate its recall if necessary.