Sec. 4a.

(1) A rebate or discount from a drug manufacturer or from a company that licenses or distributes the drugs of a drug manufacturer to a consumer for that consumer's use of a drug manufactured or licensed or distributed by that drug manufacturer or company does not violate section 4.

(2) This section does not alter any copayment, deductible, coinsurance, or other cost-sharing requirements under a contract, certificate, or policy issued by a health care corporation or health care insurer.