Resources

History

Advisories

Drug information & medical background

Grey literature

See the grey literature bibliography for documents outside the peer-reviewed literature such as dissertations and blog posts.

Regulatory history

Pharmacovigilance systems

Support groups and organizations

Post-finasteride syndrome and related topics have been discussed on FrankTalk and Ray Peat Forum.

Hair loss discussions and media

Medical and industry organizations

Specialty associations

Telepharmacies

Citizen Petition to FDA from PFS Foundation

See updates in Finasteride timeline (2021–2022).

Patents

Merck’s key patent for Propecia appears to be Patent No. 5,571,817, granted Nov 5, 1996: “Methods of treating androgenic alopecia with finasteride…

Patent #DateTitleAssignee
3,917,829Nov 4, 1975Novel methods of inhibiting the activity of testosterone 5.alpha.-reductaseResearch Corporation
4,088,760May 9, 1978Testosterone 5.alpha.-reductase inhibitorsRichardson-Merrell
4,191,759Mar 4, 1980N-substituted-17.beta.-carbamoylandrost-4-en-3-one 5.alpha. reductase inhibitorsMerck

4,220,775
Sep 2, 1980Preparation of 4-aza-17-substituted-5.alpha.-androstan-3-ones useful as 5.alpha.-reductase inhibitorsMerck
4,317,817Mar 2, 1982Novel steroid 5.alpha.-reductase inhibitorsRichardson-Merrell
4,361,578Nov 30, 1982D-HomosteroidsAlig, Leo et al. (Switzerland & Germany)
4,377,584Mar 22, 19834-Aza-17.beta.-substituted-5.alpha.-androstan-3-one-reductase inhibitors Merck
4,732,897Mar 22, 1988Steroidic 5.alpha.-reductase inhibitorsFarmitalia; Consiglio Nazonale Delle Ricerche
4,760,071Jul 26, 198817.beta.-N-monosubstituted carbamoyl-4-aza-5.alpha.-androst-1-en-3-ones which are active as testosterone 5.alpha.-reductase inhibitorsMerck
4,845,104Jul 4, 1989Oxidized analogs of 17.beta.-N-monosubstituted-carbamoyl-4-aza-5-.alpha.-androstan-3-onesMerck
4,859,681Aug 22, 198917.alpha.-Acyl-4-aza-5a-androst-1-en-3-ones as 5 alpha-reductase inhibitorsMerck
4,882,319Nov 21, 1989Phosphonic acid substituted aromatic steroids as inhibitors of steroid 5-.alpha.-reductaseSmithKline Beckman
4,888,336Dec 19, 1989Steroid 5-alpha-reductase inhibitorsSmithKline Beckman
4,910,226Mar 20, 1990Steroid 5-alpha-reductase inhibitorsSmithKline Beckman
4,937,237Jun 26, 1990Phosphinic acid substituted aromatic steroids as inhibitors of steroid 5-60 -reductaseSmithKline Beckman
5,017,568May 21, 1991Steriod [sic] 5-alpha-reductase inhibitorsSmithKline Beecham
5,061,802Oct 29, 199117.beta.-aminobenzoyl-4-aza-5.alpha.-androst-1-en-3-ones as benign prostatic hypertrophy agentsGlaxo
5,098,908Mar 24, 199217.beta.-hydroxybenzoyl-4-aza-5.alpha.-androst-1-en-3-ones as testosterone reductase inhibitorsMerck
5,302,589Apr 12, 1994Heterocyclic inhibitors of 5-.alpha.-testosterone reductaseGlaxo
5,571,817Nov 5, 1996Methods of treating androgenic alopecia with finasteride [17.beta.-N-mono-substituted-carbamoyl-4-aza-5-.alpha.-androst-1-en-ones]Merck