La. Stat. tit. 39 § 1601
Multisource generic drug contracts shall be used for the procurement of drugs approved by the Federal Drug Administration and listed in the Federal Drug Administration Prescription Drug Products with Therapeutic Equivalence Evaluations Compendium and Supplements for all using agencies. Such contracts shall be competitively bid at the lowest available price. However, a brand name contract may be used if there is only one source of supply for a particular drug or if the using agency certifies to the chief procurement officer that a justifiable medical reason exists for the use of a particular brand name drug. The chief procurement officer shall seek the advice of the Drug Procurement Advisory Council on all such requests other than declared emergencies.
La. R.S. § 39:1601