Finasteride: performance vs medical framing
Finasteride (performance) vs Finasteride (pharma)
The table compares the compounds’ key data from their entry pages. Open each compound’s full entry for details. Educational content, not medical advice.
 Finasteride (Propecia / Proscar) · performance |  Finasteride · pharma | |
|---|---|---|
| What it is | Selective type-II 5α-reductase inhibitor. FDA-approved (Proscar 1992 BPH 5 mg, Propecia 1997 AGA 1 mg). In AAS: scalp DHT suppression to slow hair loss in genetically predisposed users. Type-I 5AR not inhibited. | 5α-reductase type II selective inhibitor. FDA-approved for androgenetic alopecia (Propecia 1 mg) and BPH (Proscar 5 mg). Reduces DHT formation by ~70%. |
| Mechanism of actionMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds). | Selective type-II 5α-reductase inhibitor, ~70% scalp DHT suppression at 1 mg/day | Selective 5α-reductase type II inhibition, ~70% DHT reduction |
| Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed. | ~6 h parent, pharmacodynamic effect 24+ h enzyme inhibition | 5-6 h plasma, 96+ h enzyme affinity |
| OnsetOnsetThe time from dosing until a measurable effect appears. | DHT reduction measurable 24 h, hair stabilization 3-6 months | 3-6 months (hair stabilization), 6-12 months (regrowth) |
| Full entry | Open → | Open → |
What it is
Finasteride (Propecia / Proscar) · performanceSelective type-II 5α-reductase inhibitor. FDA-approved (Proscar 1992 BPH 5 mg, Propecia 1997 AGA 1 mg). In AAS: scalp DHT suppression to slow hair loss in genetically predisposed users. Type-I 5AR not inhibited.
Finasteride · pharma5α-reductase type II selective inhibitor. FDA-approved for androgenetic alopecia (Propecia 1 mg) and BPH (Proscar 5 mg). Reduces DHT formation by ~70%.
Mechanism of actionMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds).
Finasteride (Propecia / Proscar) · performanceSelective type-II 5α-reductase inhibitor, ~70% scalp DHT suppression at 1 mg/day
Finasteride · pharmaSelective 5α-reductase type II inhibition, ~70% DHT reduction
Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed.
Finasteride (Propecia / Proscar) · performance~6 h parent, pharmacodynamic effect 24+ h enzyme inhibition
Finasteride · pharma5-6 h plasma, 96+ h enzyme affinity
OnsetOnsetThe time from dosing until a measurable effect appears.
Finasteride (Propecia / Proscar) · performanceDHT reduction measurable 24 h, hair stabilization 3-6 months
Finasteride · pharma3-6 months (hair stabilization), 6-12 months (regrowth)