ClinicalTrials.gg
CompletedNCT03827629Updated Feb 1, 2019

A Study to Compare Bioavailability of Naloxone Nasal Spray and Naloxone Hydrochloride (HCl) Intramuscular Injection (IM) in Healthy Volunteers

A Phase 1 interventional study of Treatment A: Naloxone Nasal Spray and Treatment B: Naloxone Nasal Spray in Healthy Volunteer, sponsored by INSYS Therapeutics Inc. Completed at 1 site in United States. Open to participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-02-01.

Sponsored by INSYS Therapeutics Inc · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Aug 2017, 9 years 2 months ago, and no results have been posted to the registry.
  • Registered 1 year 5 months after the study started (first participant enrolled Aug 2017, registered Jan 2019).
Phase
Phase 1
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

The main objective of this study is to compare early exposures of two test formulations of Naloxone Nasal Spray with the reference formulation of Naloxone HCl IM Injection under fasted conditions.

02

Conditions studied

  • Healthy Volunteer
03

In context

Lead sponsor

INSYS Therapeutics Inc is the lead sponsor of 45 studies on the registry; none are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 3 (60%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • A minimum body weight of 50 kg and a (BMI) between 18.0 and 32.0 kilogram per square meter (kg/m2)
  • A seated blood pressure between 90 and 140 millimeters of mercury (mmHg) systolic/50 and 90 mmHg diastolic (inclusive)
  • Female subjects had a negative serum β-human chorionic gonadotropin (β-hCG) pregnancy test at screening

Exclusion criteria

Exclusion Criteria:

  • A known allergy or history of significant adverse reaction to naloxone, other opioids or related compounds, or to any of the .
  • Any documented infection, injury, or illness within 1 month prior to screening.
  • An active of any type, or had been diagnosed with cancer within 5 years prior to screening.
  • A documented history of alcohol or drug abuse/dependence/misuse or narcotic analgesic abuse/dependence/misuse within 2 years prior to screening. Alcohol abuse was defined as greater than 14 drinks per week.
  • Positive serology test for , , or (HIV) at screening.
  • A positive urine test result for alcohol, drugs, or cotinine at screening or check-in.
  • A condition that the Investigator believed would have interfered with the ability to provide or comply with study instructions, or that could confound the interpretation of the study results or put the subject at undue risk.
  • Used any opioids for 30 days prior to Day 1.
  • Required treatment with monoamine oxidase inhibitors (MAOIs) within 30 days prior to Day 1 and during the study.
  • Presence of an ongoing upper respiratory infection, rhinitis, rhinorrhea, or nasal congestion.
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    Cohort 1: Treatment Sequence A-B-C

    Participants received Treatment A on Day 1 of Period 1, Treatment B on Day 1 of Period 2, and Treatment C on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

  • Experimental
    Cohort 2: Treatment Sequence B-C-A

    Participants received Treatment B on Day 1 of Period 1, Treatment C on Day 1 of Period 2, and Treatment A on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

  • Experimental
    Cohort 3: Treatment Sequence C-A-B

    Participants received Treatment C on Day 1 of Period 1, Treatment A on Day 1 of Period 2, and Treatment B on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

  • Experimental
    Cohort 4: Treatment Sequence A-C-B

    Participants received Treatment A on Day 1 of Period 1, Treatment C on Day 1 of Period 2, and Treatment B on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

  • Experimental
    Cohort 5: Treatment Sequence C-B-A

    Participants received Treatment C on Day 1 of Period 1, Treatment B on Day 1 of Period 2, and Treatment A on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

  • Experimental
    Cohort 6: Treatment Sequence B-A-C

    Participants received Treatment B on Day 1 of Period 1, Treatment A on Day 1 of Period 2, and Treatment C on Day 1 of Period 3.

    Drug: Treatment A: Naloxone Nasal Spray · Drug: Treatment B: Naloxone Nasal Spray · Drug: Treatment C: Naloxone HCL Intramuscular (IM) Injection

Interventions

  • Participants received naloxone nasal spray following a 10 hour fast.

  • Participants received naloxone nasal spray following a 10 hour fast.

  • DrugTreatment C: Naloxone HCL Intramuscular (IM) Injection

    Participants received naloxone HCl IM injection following a 10 hour fast.

06

What researchers measure

Primary outcomes

  1. Plasma Concentration of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 1 hour post-dose

  2. Partial Area Under the Concentration Curve (AUC) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 1 hour post-dose

Secondary outcomes

  1. Area Under the Curve from Time 0 to the Last Measured Concentration (AUC0-t) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  2. Area Under the Curve from Time 0 to Infinity (AUC0-inf) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  3. Percentage of AUC0-inf Obtained by Extrapolation (AUCextrap) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  4. Maximum Plasma Concentration (Cmax) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  5. Time to Reach Maximum Plasma Concentration (Tmax) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  6. Last Quantifiable Concentration (Clast) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  7. Time of the Last Quantifiable Concentration (Tlast) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  8. Time Prior to the First Measurable (Non-Zero) Concentration (Tlag) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  9. Elimination Rate Constant (λz) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  10. Elimination Half-Life (t1/2) of Unconjugated Naloxone

    Time frame: Pre-dose and at multiple time points up to 24 hours post-dose

  11. Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)

    An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product during the course of a clinical investigation. An AE can therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of an investigational product, whether or not thought to be related to the investigational product. A serious AE (SAE) is any AE that results in death, is life threatening, requires hospitalization or prolongs existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, is medically significant or requires intervention.

    Time frame: Day 1 up to Day 10

07

Study locations

1 site
  • Worldwide Clinical Trials
    San Antonio, Texas 78217, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 1, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03827629
Responsible party
Sponsor
First posted
Feb 1, 2019
Start date
Aug 7, 2017
Primary completion
Aug 16, 2017
Completion
Aug 16, 2017
Last update
Feb 1, 2019

Study contacts

Giovanni DeCastro
study director · INSYS Therapeutics Inc

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Naloxone

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