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Safety and Pharmacokinetic Study of Sublingual Flumazenil (CRLS035) in Healthy Adults

Open Label, Randomized, Three-way Crossover Study to Assess the Safety and the Pharmacokinetics of Sublingual Flumazenil (CRLS035) in Healthy Adults

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01655914
Enrollment
10
Registered
2012-08-02
Start date
2010-07-31
Completion date
2012-08-31
Last updated
2015-01-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Insomnia

Brief summary

This study compare the pharmacokinetic (PK) profile of sublingual CRLS035 (two doses) to I.V flumazenil administration. Selection of study drug dosage: CRLS035 - sublingual Flumazenil will be administrated at a final dosage of 1.1 mg per 100 µl and 2.2 mg (200 µl) in a sublingual spray administration. Currently, Flumazenil is given as an IV drug with a repetitive administration of doses of 0.2 mg up to 3 mg per hour. As the bioavailability of Flumazenil is expected to be lower than the IV administration, 1.1 mg and 2.2 mg will be tested in sublingual delivery. The suggested doses in this study are very safe according to the following data: first, sublingual and buccal administration of Flumazenil have been detailed previously with similar and higher doses with no side effects, secondly, IV dose may reach 3 mg and thirdly, oral administration has been reported as up to 600 mg/dose. The purpose of this study is to determine the single dose PK profile of SL CRLS035. This study is designed to collect short-term safety data and to monitor the PK profile of CRLS035. Primary Objective The primary objective is to determine the single dose safety and PK profile of SL CRLS035 using the marketed IV flumazenil formulation as the comparator. Secondary Objectives The secondary objectives are to (1) characterize the concentration time course of two dose levels of SL CRLS035 to support dose selection for Phase 2 and 3 studies and to evaluate the safety and tolerability of flumazenil formulations; (2)To evaluate the effect of high fat diet and water consumption on the PK profile.

Interventions

DRUGFlumazenil

Sponsors

Coeruleus Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. The subject understood and voluntarily signed an informed consent form prior to any study-mandated procedure. 2. Male or female aged ≥18-at screening. 3. Body mass index ≥ 18.5 and \< 32 kg/m2. 4. Subject is in good health as determined by a medical history, physical examination and ECG. 5. Negative any use of illicit drug, alcohol (ethanol), stimulants.

Exclusion criteria

1. Any use of medications within 1 month prior to screening visit, except for contraceptive pills. 2. Previous exposure to Benzodiazepines and/or non-Benzodiazepine hypnotic drugs within 3 months prior to study initiation. 3. History of Epilepsy and or anti-epileptic drugs. 4. Pregnancy or breast feeding. 5. Clinically relevant ECG abnormalities. 6. History of alcohol or drug abuse within 3 years prior to the screening visit. 7. Known hypersensitivity to drugs of the same class as the study treatment, or any excipients of the drug formulation. 8. Treatment with another investigational drug within 1 month prior to the screening visit. 9. History of severe head injury. 10. Any acute or chronic illness 11. Xerostomia (endogenic or drug induced).

Design outcomes

Primary

MeasureTime frameDescription
Bioavailability & Bioequivalence study of sublingual CRLS035 (1.1 mg and 2.2 mg) in a single dose administration3 monthsTo determine the Bioavailability and Bioequivalence of sublingual CRLS035 (1.1 and 2.2 mg) in a single dose administration using the marketed IV flumazenil formulation (0.2 mg) as the comparator \[Cmax, Tmax, Cmin, Tmin, AUC0-∞, AUC0-t, T1/2, and F\]
Number of participants with adverse events3 monthsTo determine the number of participants with adverse events to sublingual CRLS035 administration (1.1 mg and 2.2 mg)

Secondary

MeasureTime frameDescription
Dose Escalation3 monthsThe secondary objectives are to characterize the concentration time course of two dose levels of SL CRLS035 to support dose selection for Phase 2 and 3 studies and to evaluate number of participants with adverse events and tolerability of flumazenil formulations.
High Fat Diet and Water Consumption effect3 monthsTo evaluate the effect of high fat diet and water consumption on the PK profile.

Countries

Israel

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026