Pfizer has hired APCO Worldwide to promote its participation in the "U Share Prescription Drug Discount Card" program aimed at Medicare beneficiaries.

The New York-based pharmaceutical house is replacing its Pfizer Share Card, which has more than 550,000 participants, with U Share. Holders of the PSC receive a 30-day supply of many Pfizer drugs for $15 per prescription. That program is being phased out by Aug. 31, but enrollees must apply for membership in U Share, which offers the same flat fee on Pfizer and drugs from other companies.

United Healthcare Insurance Co. administers the U Share plan. Eli Lilly & Co. is Pfizer's partner in the U Share program. Its drugs are available for a $12 prescription price.