Ohio Rev. Code Ann. § 5164.7515
(B) For a prescribed drug identified by the director under division (A) of this section, the director shall determine if there is a current supplemental rebate for that drug between the drug's manufacturer and the department or its designee. If there is a current supplemental rebate for the drug, the director may renegotiate the supplemental rebate agreement. If there is not a supplemental rebate for the drug, the director shall evaluate whether to pursue a supplemental rebate agreement for the drug with the drug manufacturer. In making that evaluation, the director may consider any of the following:
(C)
(1) If the director determines that a prescribed drug rebate agreement renegotiation is warranted under division (B) of this section, the director shall establish a target rebate amount. In determining the target rebate amount, the director may consider any of the following: