Drug

Clonidine

As of the edition of 20 October 2026, Clonidine is a small molecule: marketed, first approved in 1972 (ES); acts on ADRA2A, ADRA2B and ADRA2C.

Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.

The drug

Status
Marketed; latest approval 1986
Kind
Small molecule
Brand name
Catapres
First approved
1 October 1972 (ES)
Approvals on record
23 in 3 regions
Holder of the most recent approval
Cmp; 10 holders in all
Registered trials
150, 31 stopped early
Disease areas
Nervous system; Mental health; Heart and blood vessels; Chemically induced; Bones, joints and muscles; Inherited and neonatal

US protection

No US approval on record.

With no US approval on record there are no listed US patents or exclusivities.

This is the US only.

Targets

GeneProteinUniProt
ADRA2AAlpha-2A adrenergic receptorP08913
ADRA2BAlpha-2B adrenergic receptorP18089
ADRA2CAlpha-2C adrenergic receptorP18825

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase not stated311918
Phase 1171222
Phase 2291818
Phase 3241226
Phase 4492467
All trials150

Who has held its approvals

CompanyRoleYears
AstellasLater holder and Lead sponsor of trials1996 to now
Hikma PharmaceuticalsLater holder1999 to now
Boehringer IngelheimApplicant and Lead sponsor of trials2000 to now
Addrenex PharmaceuticalsLater holder and Lead sponsor of trials2007 to now
Tris PharmaLater holder2009 to now
ViatrisAcquired holder2012 to now
ConcordiaAcquired holder2013 to now
LavipharmAcquired holder2021 to now
Azurity PharmaceuticalsLater holder2025 to now
CmpLater holder2026 to now