FDA pharmacologic class
5-alpha reductase inhibitors
2 medicines are in FDA's class of 5-alpha reductase inhibitors (5-alpha reductase inhibitors): finasteride (Proscar) and dutasteride; 1 combination product also contains one. All 3 are listed from generic labelers (FDA NDC Directory, October 8, 2026). The lowest pharmacy cost is finasteride 5 mg tablet at $0.0688 per tablet (NADAC).
Which medicines are 5-alpha reductase inhibitors?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Finasteride | Proscar, Propecia | 30 labelers | $0.0688 per tablet 5 mg tablet | No | No current entry | 6 |
| Dutasteride | none listed | 13 labelers | $0.157 per capsule 0.5 mg capsule | No | No current entry | 0 |
| Dutasteride and tamsulosin | Jalyn | 3 labelers | $1.97 per unit 0.5-0.4 | No | No current entry | 1 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)
What do pharmacies pay?
Each medicine's most widely listed form, per unit, in the NADAC survey: what pharmacies paid, not what a patient pays; strengths differ, so compare like with like.
Source: CMS National Average Drug Acquisition Cost (NADAC) survey, October 7, 2026: what retail pharmacies paid per unit; not a counter price