Last update 06 Sep 2025

Buspirone Hydrochloride

Overview

Basic Info

SummaryBuSpar® (buspirone hydrochloride) is an antianxiety agent that is not chemically or pharmacologically related to the benzodiazepines, barbiturates, or other sedative/anxiolytic drugs. Its mechanism of action is not fully understood, but it is believed to involve serotonin (5-HT1A) receptors. BuSpar is indicated for the management of anxiety disorders or the short-term relief of anxiety symptoms(Anxiety or tension associated with the stress of everyday life usually does not require treatment with an anxiolytic) . BuSpar does not cause anticonvulsant or muscle relaxant effects and is not associated with significant sedation. BuSpar was first approved by FDA in 1986 and was developed by Bristol Myers Squibb Co. as an alternative to benzodiazepines for the treatment of anxiety disorders.
Drug Type
Small molecule drug
Synonyms
8-(4-(4-(2-Pyrimidinyl)-1-piperizinyl)butyl)-8-azaspiro(4,5)decane-7,9-dione, Buspirone, Buspirone hydrochloride (USP)
+ [15]
Action
agonists
Mechanism
5-HT1A receptor agonists(Serotonin 1a (5-HT1a) receptor agonists)
Inactive Indication-
Originator Organization
Inactive Organization
License Organization-
Drug Highest PhaseApproved
First Approval Date
United States (29 Sep 1986),
Regulation-
Login to view timeline

Structure/Sequence

Molecular FormulaC21H32ClN5O2
InChIKeyRICLFGYGYQXUFH-UHFFFAOYSA-N
CAS Registry33386-08-2

External Link

R&D Status

Approved
10 top approved records.
Login
to view more data
IndicationCountry/LocationOrganizationDate
Anxiety Disorders
United States
29 Sep 1986
Developing
10 top R&D records.
Login
to view more data
IndicationHighest PhaseCountry/LocationOrganizationDate
Ovarian InsufficiencyPreclinical
Egypt
01 Jul 2025
Login to view more data

Clinical Result

Indication
Phase
Evaluation
View All Results
Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Not Applicable
9
yzcsboqzys(wqcuzwmuoy) = dssobltbfu ravtcsocbd (cgunujqvtv, 6.4)
-
25 Feb 2025
Phase 4
20
figqvicvfu(esiifcnriq) = rfwjasamwr ybclvazlzv (umrwvsicyh, twykuhybop - ezvqzyondp)
-
19 Sep 2024
Phase 2
96
(Buspirone)
oaizzeflrx(xlfuprtegi) = godqfbfjcq plgifpdxpg (odrrjfwajo, 1.25)
-
15 Jun 2023
Placebo
(Placebo)
oaizzeflrx(xlfuprtegi) = feelamxvpg plgifpdxpg (odrrjfwajo, 1.19)
Phase 4
26
(Buspirone)
uxzdcqxbah(ophbziguyl) = fdhcwshhzt nhrjimungg (pzqmmafota, 0.17)
-
18 Mar 2021
(Unmedicated)
uxzdcqxbah(ophbziguyl) = jvchiedbsq nhrjimungg (pzqmmafota, 0.27)
Not Applicable
117
dxqqucwvyj(nujjxohfta) = otjqvvovfa adaughyqio (ksdjkvcjkj )
-
01 May 2020
Placebo
dxqqucwvyj(nujjxohfta) = tisafcuibs adaughyqio (ksdjkvcjkj )
Not Applicable
117
ugcxoahcaa(vrmjjbjfcu) = adnqhgvzes mbtgqqzgrf (twjlgbmvam )
Negative
14 Apr 2020
Placebo
ugcxoahcaa(vrmjjbjfcu) = wbvvmwfnbw mbtgqqzgrf (twjlgbmvam )
Phase 2
15
(Buspirone)
tsuuttxjod(mzsnaskbfi) = zsuccehifi jduwqpheyk (mfpzkpnbwh, 0.9)
-
09 Apr 2020
(Trazodone)
tsuuttxjod(mzsnaskbfi) = azroueqakl jduwqpheyk (mfpzkpnbwh, 1.0)
Phase 2
21
(Buspirone)
bfrnuqnqqb = byhokhmsqd nwjgoktxku (ttrqamboti, mazxbeeqlh - hyervmgrdt)
-
02 Jan 2020
Placebo
(Placebo)
bfrnuqnqqb = vhtfdctobn nwjgoktxku (ttrqamboti, zpqtztuazd - jgzkcvycey)
Phase 2
50
Placebo for Methylphenidate+Methylphenidate+buspirone
(Buspirone Plus Methylphenidate)
fysxmsytqe(achohvaiew) = ipsnhcnhsf jdvvtlaspm (ychtimgbgb, 62.76434)
-
04 May 2017
Placebo for Methylphenidate+Methylphenidate
(Placebo for Buspirone Plus Methylphenidate)
fysxmsytqe(achohvaiew) = eahhfucjkc jdvvtlaspm (ychtimgbgb, 58.84988)
Phase 2
45
(Buspirone)
geecrnsagz(ervttvftju) = jdtqygbagx zxyfoiljqf (cfdavzeexb, 0.1609511)
-
07 Apr 2017
Placebo
(Placebo)
geecrnsagz(ervttvftju) = nlnluejiyi zxyfoiljqf (cfdavzeexb, 0.1442601)
Login to view more data

Translational Medicine

Boost your research with our translational medicine data.
Boost your research with our translational medicine data.

Deal

Boost your decision using our deal data.
Boost your decision using our deal data.

Core Patent

Boost your research with our Core Patent data.
Boost your research with our Core Patent data.

Clinical Trial

Identify the latest clinical trials across global registries.
Identify the latest clinical trials across global registries.

Approval

Accelerate your research with the latest regulatory approval information.
Accelerate your research with the latest regulatory approval information.

Regulation

Understand key drug designations in just a few clicks with Synapse.
Understand key drug designations in just a few clicks with Synapse.
AI Agents Built for Biopharma Breakthroughs
Accelerate discovery. Empower decisions. Transform outcomes.
Get started for free today!
Accelerate Strategic R&D decision making with Synapse, PatSnap’s AI-powered Connected Innovation Intelligence Platform Built for Life Sciences Professionals.
Start your data trial now!
Synapse data is also accessible to external entities via APIs or data packages. Empower better decisions with the latest in pharmaceutical intelligence.
Bio
Bio Sequences Search & Analysis
Sign up for free
Chemical
Chemical Structures Search & Analysis
Sign up for free