The document discusses Menzis, a large Dutch health insurer, and its preference policy for prescribing generic medicines. The policy aims to use the lowest priced generic equivalent once a brand name drug's patent expires. Pharmacists previously earned high margins substituting generics, without passing savings to customers. Under the preference policy, manufacturers submit annual prices and the lowest bidder wins preferred status for reimbursement. This has saved over 500 million euros annually. The policy could expand to include more drugs and be adopted in other countries to promote transparency and realistic drug prices.