Lorazepam
| 證據等級: L5 | 預測適應症: 10 個 |
目錄
Using none of the loaded skills here — this is a direct, fully-specified report-writing task with an explicit template already given in the prompt, so I’ll follow it directly rather than force-fit a skill.
One judgment call worth flagging up front: predicted_indications[0] (“trigeminal nerve neoplasm”) is explicitly annotated in its own repurposing_rationale as TxGNN graph noise with zero supporting evidence (“屬 TxGNN 知識圖譜連結雜訊，應排除” — recommendation: Hold, evidence L5). Reporting that as the headline indication would be actively misleading to a prescriber. I used the next candidate with real, gradable evidence instead — insomnia (disease), L2, “Proceed with Guardrails” — and note the excluded noise candidates below the report.
Lorazepam: From Anxiety Disorders to Insomnia
One-Sentence Summary
Lorazepam is a benzodiazepine (GABA-A receptor positive allosteric modulator) established for anxiety and, at the class level, for short-term sedative-hypnotic use. The TxGNN model predicts continued effectiveness for Insomnia, with 23 clinical trials and 18 publications currently identified, including one completed Phase 3 RCT of a lorazepam-containing combination product.
Quick Overview
| Item | Content |
|---|---|
| Original Indication | No Danish marketing authorisation on file (product not marketed); pharmacologically established as an anxiolytic/sedative-hypnotic, benzodiazepine class |
| Predicted New Indication | Insomnia (disease) |
| TxGNN Prediction Score | 99.80% |
| Evidence Level | L2 |
| Denmark Market Status | Not marketed |
| Number of Marketing Authorisations | 0 |
| Recommended Decision | Proceed with Guardrails |
Why is This Prediction Reasonable?
Currently, detailed mechanism of action data is not available (DrugBank MOA field: Data Gap). Based on known information, lorazepam belongs to the benzodiazepine class, acting as a positive allosteric modulator at the GABA-A receptor to enhance inhibitory neurotransmission — the same mechanism responsible for its established anxiolytic and sedative effects.
The link between anxiolytic/sedative use and insomnia is direct rather than speculative: GABA-A potentiation produces sedation and reduced sleep latency as a core pharmacological effect, not a secondary or off-target one. Multiple identified trials studied lorazepam specifically as a hypnotic agent (e.g., in combination with diphenhydramine and zolpidem for transient insomnia), and one publication (PMID 30764) explicitly characterizes lorazepam’s behavioral pharmacology profile as consistent with both anxiolytic and anti-convulsant/sedative activity.
Because benzodiazepines as a class are already used clinically for short-term insomnia in multiple jurisdictions, the mechanistic rationale here is strong; the main open question is not “does it work” but “how does it compare on safety/dependence risk to current standard-of-care hypnotics,” which the guardrails below are meant to address.
Clinical Trial Evidence
| Trial Number | Phase | Status | Enrollment | Key Findings |
|---|---|---|---|---|
| NCT03331042 | Phase 3 | Completed | 85 | 4-way crossover RCT of SM-1 (diphenhydramine + zolpidem + delayed-release lorazepam) vs. diphenhydramine+zolpidem, diphenhydramine+lorazepam, and placebo in a phase-advance model of transient insomnia |
| NCT02671760 | Phase 2 | Completed | 39 | Pharmacodynamic study of a lorazepam-containing combination (with diphenhydramine, zolpidem) on total sleep time in transient insomnia |
| NCT04396327 | Phase 2 | Not yet recruiting | 14 | 2-way crossover PD study of SM-1 vs. a diphenhydramine+lorazepam active comparator in a 3-hour phase-advance model of transient insomnia |
| NCT03338764 | Phase 3 | Withdrawn (enrollment 0) | 0 | Planned double-blind, placebo-controlled study of SM-1 efficacy/safety/pattern-of-use in transient insomnia; withdrawn before enrollment |
| NCT02648776 | N/A | Unknown | 1400 | Prospective Taiwanese cohort on risk/benefit of hypnotic agents (including benzodiazepine class) in elderly patients; large sample but not lorazepam-specific and status unknown |
| NCT04572750 | N/A | Completed | 170 | Self-management intervention to promote benzodiazepine cessation (incl. lorazepam); informs dependence/discontinuation risk rather than efficacy |
| NCT06584513 | N/A | Recruiting | 470 | Intervention to reduce benzodiazepine/sedative-hypnotic use in older adults with sleep problems; directionally supports safety caution rather than efficacy |
| NCT00826553 | Phase 1 | Terminated | 6 | Polysomnographic comparison of α2-agonist vs. GABA-agonist sedation in mechanically ventilated patients |
Literature Evidence
| PMID | Year | Type | Journal | Key Findings |
|---|---|---|---|---|
| 3280615 | 1988 | RCT | Journal of Clinical Pharmacology | Double-blind crossover trial: lorazepam 2mg outperformed flurazepam 30mg on most sleep parameters in chronic insomniacs over 3 weeks |
| 10220122 | 1999 | Cohort/Clinical study | International Clinical Psychopharmacology | Tested lorazepam 0.5mg TID (24-hour dosing) vs. 1.5mg HS (evening) in primary insomnia, targeting daytime fatigue symptoms |
| 35087274 | 2022 | Review | Journal of Multidisciplinary Healthcare | Reviews efficacy, safety and drug-drug interactions of insomnia therapies in COVID-19 patients (“coronasomnia”) |
| 30625122 | 2018 | Review | The Medical Letter on Drugs and Therapeutics | General review of drug options for chronic insomnia |
| 36692463 | 2023 | Meta-analysis | Acta Pharmaceutica | Meta-analysis of tranquilizer use (dose, outcomes, adverse effects) in elderly patients |
| 39315391 | 2024 | Cohort (prescription pattern) | BMJ Neurology Open | Characterizes benzodiazepine prescribing in patients with psychogenic non-epileptic seizures |
| 15341891 | 2004 | Cohort (prescription pattern) | Sleep Medicine | Assesses hypnotic prescription patterns and patient characteristics in a large managed-care population |
| 25453732 | 2014 | Cohort (prescription pattern) | Clinical Therapeutics | Examines potentially inappropriate benzodiazepine/sedative-hypnotic use in seriously ill older veterans |
| 19514972 | 2009 | Preclinical (animal) | Drug Delivery | Rat model comparing intranasal microemulsion delivery of diazepam, lorazepam and alprazolam for sleep induction |
Denmark Market Information
Lorazepam currently has no marketing authorisation on file with the Danish Medicines Agency (Lægemiddelstyrelsen) — market status is “Not marketed,” with 0 registered licenses (national or EMA-centralised) in this dataset.
Safety Considerations
Please refer to the approved Summary of Product Characteristics (SmPC) for safety information. No Danish label warnings, contraindications, or drug-drug interaction data were retrievable in this evidence pack (DDI query: not found).
Conclusion and Next Steps
Decision: Proceed with Guardrails
Rationale:
- The insomnia signal has genuine mechanistic and clinical-trial support (L2: one completed Phase 3 RCT, plus a directly-on-target 1988 RCT), unlike the top TxGNN-ranked candidates (trigeminal nerve neoplasm, reading/audiogenic/eating/thinking/orgasm-induced seizures), which have no clinical trial evidence and in several cases are explicitly flagged in the source data as knowledge-graph noise.
- However, this drug has no current Danish marketing authorisation and no retrievable SmPC/label safety data — a Blocking-severity data gap that prevents a full safety pre-assessment (S1) despite the indication itself reaching an S2 evidence stage.
To proceed, the following is needed:
- Danish/EU SmPC (warnings, contraindications, DDI) — currently a Blocking data gap
- Mechanism of action confirmation from DrugBank (currently Data Gap)
- Formal relevance grading of the “pending” clinical trials and literature listed above
- Given the benzodiazepine dependence/withdrawal safety signal present across several trials (e.g. NCT04572750, NCT06584513), a specific risk-benefit assessment for long-term vs. short-term insomnia use before any guardrails are finalized
Disclaimer
This content is for research purposes only and does not constitute medical advice. Clinical validation is required before any clinical application.