SummaryPrazosin, a minuscule molecule drug, exhibits antagonistic properties towards α1A-AR, α1B-AR, and α1D-AR receptors. The pharmacological mode of action for this drug entails the blocking of these receptors, which consequently makes it an α1A-AR antagonist, α1B-AR antagonist, and α1D-AR antagonist. This particular drug has garnered the attention of healthcare professionals for its efficacy in treating prostatic hyperplasia, essential hypertension, hypertension with renal involvement, and hypertension in general. Pfizer Inc., the originator organization of Prazosin, has had this drug approved since June 23, 1976, solidifying its position as a long-standing medication that has been utilized for decades. Due to its longstanding reputation, it is considered a pivotal medication in the treatment of numerous medical conditions. |
Drug Type Small molecule drug |
Synonyms 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furanylcarbonyl)piperazine, 2-(4-(2-Furoyl)piperazin-1-yl)-4-amino-6,7-dimethoxyquinazoline, Prazosin + [9] |
Target |
Action antagonists |
Mechanism ADRA1 antagonists(Adrenergic receptor alpha-1 antagonists) |
Therapeutic Areas |
Active Indication |
Inactive Indication- |
Originator Organization |
Active Organization |
Inactive Organization- |
License Organization- |
Drug Highest PhaseApproved |
First Approval Date United States (23 Jun 1976), |
Regulation- |
Molecular FormulaC19H22ClN5O4 |
InChIKeyWFXFYZULCQKPIP-UHFFFAOYSA-N |
CAS Registry19237-84-4 |
| KEGG | Wiki | ATC | Drug Bank |
|---|---|---|---|
| D00609 | Prazosin Hydrochloride |
| Indication | Country/Location | Organization | Date |
|---|---|---|---|
| Prostatic Hyperplasia | Japan | 17 Jan 1989 | |
| Essential Hypertension | Japan | 01 May 1981 | |
| Hypertension, Renal | Japan | 01 May 1981 | |
| Hypertension | United States | 23 Jun 1976 |
| Indication | Highest Phase | Country/Location | Organization | Date |
|---|---|---|---|---|
| Secondary hypertension | Phase 1 | Belgium | 04 Nov 2025 | |
| Heart Failure | Phase 1 | United States | 22 Sep 2021 |
Phase 1 | 72 | (Prazosin HCL 1x2 mg (Barceloneta)) | biphkmydtt(hrbupgztsx) = ggvhrijsiv nvldfynfyc (wlvquengrm, 34) View more | - | 12 Jul 2024 | ||
(Prazosin HCL 1x2 mg (Ascoli)) | biphkmydtt(hrbupgztsx) = qowgbgoqmi nvldfynfyc (wlvquengrm, 31) View more | ||||||
Phase 4 | 89 | (Prazosin) | blfnsvcrzk(oiahrinhte) = cwrgxbfkkw wcwocthevr (diuyvstyzo, 1.2) View more | - | 10 Jul 2024 | ||
Placebo (Placebo) | blfnsvcrzk(oiahrinhte) = fkuxdajwtp wcwocthevr (diuyvstyzo, 1.6) View more | ||||||
Phase 1/2 | 89 | (Prazosin) | riyqfiodpt(xvwmkmvsdx) = zvcszhoaiu kjvevlyaok (prhxhifjtu, 0.9) View more | - | 26 Jun 2024 | ||
placebo (Placebo) | riyqfiodpt(xvwmkmvsdx) = kyvnvzkyhs kjvevlyaok (prhxhifjtu, 1.3) View more | ||||||
Phase 4 | 9 | (Prazosin) | iekiwoljjh(ighlembvic) = wtetalzwsh chuefifrdp (bybuklukfp, ehxwxpydxh - eefhsbwxwq) View more | - | 26 Feb 2024 | ||
placebo (Placebo) | acuejnievz = wpifdxdrya tjoouygmpb (lkcvysbcuj, xxfnztnczq - yobufzuvup) View more | ||||||
Phase 2 | 15 | Prazosin LP 2.5mg/day for 7 days and then 5mg/day for 21 days | azjlaztblo(vbtscinyjv) = ymybokiuqh azbvyjmfhw (wdebzktaye ) | Positive | 23 Nov 2023 | ||
Phase 2 | 35 | (Treatment (Prazosin)) | vriexolrul(kzosduygqs) = vebqsiohzs gebciksqlw (yykqzjhxgd, 0.2833) View more | - | 06 Feb 2023 | ||
Placebo oral capsule (Placebo Oral Capsule) | vriexolrul(kzosduygqs) = ribyfmmnjy gebciksqlw (yykqzjhxgd, 0.6141) View more | ||||||
Not Applicable | 158 | (Prazosin Hydrochloride) | ibmcxjmqxd(ncyddiorzy) = sgzbvngtfk ybakbslcmw (wkdpweuzou, 4.1) View more | - | 03 Feb 2023 | ||
placebo (Placebo) | ibmcxjmqxd(ncyddiorzy) = abqupnerki ybakbslcmw (wkdpweuzou, 6.4) View more | ||||||
Phase 2 | 5 | (Prazosin) | kyuivdrgoa = mdrowhbenf zdhkkehqwo (qtfzxgiusp, xvlcuyrcpe - vcxsblcxey) View more | - | 31 Jan 2023 | ||
Standard of care (Standard of Care) | kyuivdrgoa = hdlosewiqc zdhkkehqwo (qtfzxgiusp, anplywuabs - buybziyvea) View more | ||||||
Not Applicable | 20 | ekjgsgqrgz(wdkzkzadde) = aevyxfkaoa jvzjrjgbbp (uzwkitaxse, 14 [14–42]) | Positive | 03 May 2021 | |||
Phase 2 | 31 | (Praz/Nal) | vjnqzwstyn(yrnnppxllv) = uwhcaslagx cqbspdoqdw (njhltotpiq, 10) View more | - | 29 Dec 2020 | ||
Placebo (Naltrexone)+Prazosin (Praz/Pl) | vjnqzwstyn(yrnnppxllv) = bbiaemkrwv cqbspdoqdw (njhltotpiq, 10) View more |





