Abstract

To report out-of-pocket costs associated with overactive bladder (OAB) medications among Medicare beneficiaries and the uninsured. We performed a cross-sectional analysis of the Centers for Medicare & Medicaid Services Prescription Drug Plan Formulary Data (Q1-2022). FDA-approved medications for OAB were identified. We calculated out-of-pocket costs for Medicare beneficiaries in each Part D prescription benefit phase, average retail price, total yearly costs and discounted prices through cash-pay discount coupons (GoodRx) or online pharmacies like Mark Cuban Cost Plus Drug Company (MCCPDC). We also report plan utilization management requirements. We analyzed 5721 plan formularies for 18 medications. Mirabegron was the only beta-3 agonist (B3). Only Vesicare oral solution (14.3% of plans) and Mirabegron (0.1%) required prior authorization. Many plans required step therapy for selective generic anticholinergics (ACH) (12.4%-43.3%), while the B3 rarely required step therapy (0.6%). Monthly costs varied by coverage phase and averaged $59 for ACHs in the initial coverage phase ($14 in catastrophic; $72 in coverage gap). The monthly cost for the B3 averaged $47 in the initial coverage phase ($26 in catastrophic; $129 in coverage gap). The total yearly cost for generic ACHs ranged from $494 (oxybutynin IR) to $1452 (darifenacin) and the yearly cost for brand-name ACHs ranged from $1175 (Toviaz ER) to $2198 (Oxytrol). The total yearly cost for the B3 was $1283. We evaluated coverage, out-of-pocket costs, total yearly costs, and utilization management for OAB medications to make pricing more transparent. While selective medications may be "covered," coverage does not translate into affordable drug prices.

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