Drug class profile · refreshed daily from federal data

5-alpha Reductase Inhibitor

4 molecules in this class, $199.5M combined CY2024 Part D spend across 12.6M claims. Class-level guide below for benefits decision-makers: where the money lives, where the savings live.

Last updated 14 Jul 2026

NADAC: weekly (every Wed)Part D Formulary: quarterlyPart D Spend: annualOrange Book: weeklyShortages: daily

Class summary at a glance.

Every drug in the 5-alpha Reductase Inhibitor class tracked across NADAC, Part D Formulary, Part D Spending, FDA Orange Book, and shortage data. Ranked below by CY24 Part D spend. Click any molecule for the full drug profile.

Molecules in class: 4tracked in Part D
CY24 Part D spend: $199.5Mcombined across class
Total Rx claims: 12.6M4.0M unique beneficiaries
Generic mfrs (active): 22across all molecules

Every drug in this class, ranked by Part D spend.

CY2024 dataCMS Part D Spending Dashboard

Finasteride

Brand: PROPECIA · 11.2M Part D claims (CY24) · 3.5M beneficiaries · First FDA approval: 2006-12-15

9 generic mfrs 0 plans require PA Discontinued

Low NADAC$0.042

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Avg plan cost$0.437

Part D spend $144.5M 10× spread, current vs floor

Class share

72%

of class CY24 spend

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Dutasteride

Brand: AVODART · 1.5M Part D claims (CY24) · 481K beneficiaries · First FDA approval: 2015-11-02

10 generic mfrs 0 plans require PA

Low NADAC$0.168

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Avg plan cost$0.169

Part D spend $55.0M 1× spread, current vs floor

Class share

28%

of class CY24 spend

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Dutasteride and Tamsulosin

Brand: Jalyn · — Part D claims (CY24) · First FDA approval: 2015-11-18

3 generic mfrs 0 plans require PA

Low NADAC$2.05

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Avg plan cost$2.05

Part D spend — 1× spread, current vs floor

Class share

of class CY24 spend

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Dutasteride and Tamsulosin Hydrochloride Capsules

Brand: Dutasteride and Tamsulosin Hydrochloride · — Part D claims (CY24) · First FDA approval: 2023-11-15

Brand-only (no generics)

Low NADAC—

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Avg plan cost—

Part D spend —

Class share

of class CY24 spend

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Class summary at a glance.

Every drug in this class, ranked by Part D spend.

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