Triazolam
As of the edition of 20 October 2026, Triazolam is a small molecule: marketed, first approved in 1982 (US); acts on GABRA1, GABRA2 and GABRA3 and 4 more; no US protection is listed.
Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.
The drug
- Status
- Marketed; latest approval 1988
- Kind
- Small molecule
- Brand name
- Halcion
- First approved
- 15 November 1982 (US)
- Approvals on record
- 4 in 2 regions
- Holder of the most recent approval
- Pfizer
- Withdrawn from market
- 1 January 1982 (in some regions)
- Registered trials
- 9, 2 stopped early
- Disease areas
- Mental health; Chemically induced; Nervous system
US protection
No US protection is listed.
The FDA registers list no drug-substance patent or exclusivity that counts for this drug.
This is the US only.
Companies that need a new molecule because of this drug
1 company-target row on route B because of this drug.
Companies on route B for this drug
In the product1 company-target row is on route B because of Triazolam.
See the 1 company-target row on route B for this drug, with the facts behind eachRequest access. Nothing is shown until you do.
Targets
| Gene | Protein | UniProt |
|---|---|---|
| GABRA1 | Gamma-aminobutyric acid receptor subunit alpha-1 | P14867 |
| GABRG2 | Gamma-aminobutyric acid receptor subunit gamma-2 | P18507 |
| GABRA5 | Gamma-aminobutyric acid receptor subunit alpha-5 | P31644 |
| GABRA3 | Gamma-aminobutyric acid receptor subunit alpha-3 | P34903 |
| GABRA2 | Gamma-aminobutyric acid receptor subunit alpha-2 | P47869 |
| GABRG1 | Gamma-aminobutyric acid receptor subunit gamma-1 | Q8N1C3 |
| GABRG3 | Gamma-aminobutyric acid receptor subunit gamma-3 | Q99928 |
Registered trials
| Phase | Trials | Completed | Active | Stopped early |
|---|---|---|---|---|
| Phase not stated | 2 | 1 | 1 | 0 |
| Phase 1 | 4 | 3 | 0 | 1 |
| Phase 2 | 1 | 1 | 0 | 0 |
| Phase 3 | 1 | 0 | 0 | 1 |
| Phase 4 | 1 | 1 | 0 | 0 |
| All trials | 9 |
Who has held its approvals
| Company | Role | Years |
|---|---|---|
| Pfizer | Applicant, Earlier holder and Lead sponsor of trials | 1982 to now |