21 CFR § 211.150 - Distribution procedures.
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§ 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.