Pharmacokinetics and Relative Bioavailability of Intranasal vs Intramuscular Olanzapine in Healthy Adult Participants

November 3, 2026 updated by: Neurelis, Inc.

A Phase 1, Open-Label, Two-Sequence, Five-Period, Single Ascending Dose Study to Assess the Pharmacokinetics, Safety, and Tolerability of Intranasal Olanzapine and Relative Bioavailability Compared to Olanzapine Intramuscular Injection in Healthy Adult Participants

This is a Phase 1, open-label, 5-period, 2-sequence, single ascending dose study designed to assess the pharmacokinetics, dose proportionality, safety, and tolerability of NRL-1004 (olanzapine nasal spray), and to assess the relative bioavailability of NRL-1004, compared to olanzapine intramuscular injection (ZYPREXA IM), in healthy adult participants. The study will be conducted in a single clinical research unit (CRU).

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

24

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • A participant will be eligible for study participation if the participant meets all of the following criteria:

    1. Male and female participants aged between 18 to 65 years, inclusive.

    2. Body weight ≥50 kg and body mass index (BMI) within the range of 18.0 to 30.0 kg/m2 (inclusive).

    3. Participants must be healthy and without clinically significant abnormalities as assessed at screening and at first CRU admission visit.

    4. No clinically significant abnormality on 12-lead ECG.

    5. Normal blood pressures and pulse rate at screening and at first CRU admission visit.

    6. If male, meets one of the following criteria:

      1. Is able to procreate and agrees to use one of the accepted contraceptive regimens and not to donate sperm from the first study drug administration to at least 90 days after the last drug administration.
      2. Is unable to procreate; defined as surgically sterile
    7. If female, meets one of the following criteria:

      1. Is of childbearing potential and agrees to use an acceptable contraceptive method.
      2. Is of non-childbearing potential, defined as surgically sterile or is in a postmenopausal state.

Exclusion Criteria:

  • A participant will be excluded from the study if the participant meets any of the following criteria:

    1. Female who is pregnant or plans to become pregnant, or who is lactating or plans to be lactating during the study.
    2. Clinically significant cardiac, cardio- or cerebrovascular, respiratory, gastrointestinal, endocrine, hematologic, psychiatric, renal, hepatic, pulmonary, immunologic, dermatologic or nervous system disorders.
    3. History of or current postural orthostatic tachycardia syndrome, or orthostatic hypotension at screening and at first CRU admission.
    4. Current or history of psychiatric or psychotic diagnosis.
    5. Evidence or history of suicidal ideation as per the C-SSRS administered at screening and at first CRU admission, violence, or homicidality.
    6. Major surgery or open biopsy within 90 days prior to screening or expected/scheduled to have such procedure(s) performed during the study.
    7. Any other conditions or unstable diseases/disorders which may affect the ability of the participant to comply with the protocol requirements, jeopardize the safety of the participant, or impact the interpretation of the study results.
    8. Any clinical or laboratory measurements assessed by the Investigator as clinically relevant.
    9. Positive blood screen for human immunodeficiency virus (HIV-1/2), hepatitis B surface antigen (HBsAg), or hepatitis C virus antibody (HCV Ab) at screening.
    10. History of drug abuse or alcohol abuse within 12 months prior to Screening, and/or unwilling to refrain from such use throughout the study.
    11. History of smoking or use of tobacco or other nicotine-containing products within 3 months prior to screening and unwilling to refrain throughout the study.
    12. Use of medical or recreational cannabinoid use and unwilling to refrain throughout the study.
    13. Positive drug screen for alcohol, cotinine, or illicit drug/substance of abuse.
    14. Presence of acute conditions that could interfere with IN administration and drug absorption.
    15. National Institute of Health (NIH) Toolbox Odor Identification test score of 0 at screening.
    16. Current use of any drugs that may affect the absorption, metabolism, or elimination of study drugs, and that such treatment cannot be discontinued at least 4 weeks prior to screening and throughout the study.
    17. Unwilling to refrain from intake of food or consumption of caffeine-containing drinks that affect CYP1A2 activity throughout the course of the study.
    18. Use of any prescription medication within 14 days or 5 half-lives prior to the first dose of study drug or during the study unless approved by the Investigator. (Hormonal contraceptives or hormone replacement therapy are allowed.)
    19. Use of any over-the-counter medications within 14 days or 5 half lives prior to Screening and throughout the study unless approved by the Investigator.
    20. History of hypersensitivity or anaphylactic reactions to the active ingredient or any excipients of study drugs.
    21. Received an investigational drug within 30 days or within 5 half-lives or twice the duration of the biological effect of the investigational drug in previous study prior to screening.
    22. Inadequate or difficult venous access.
    23. Donation of plasma in the 7 days prior to the first study drug administration, or donation of 500 mL or more of blood in the 56 days prior to the first study drug administration.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: NRL 1004 25 mg/mL solution

NRL-1004 (olanzapine nasal spray), 25 mg/mL solution

Olanzapine nasal spray

Experimental: NRL-1004 50 mg/mL solution

NRL-1004 (olanzapine nasal spray), 50 mg/mL solution

Olanzapine nasal spray

Experimental: NRL-1004 75 mg/mL solution

NRL-1004 (olanzapine nasal spray), 75 mg/mL solution

Olanzapine nasal spray

Experimental: NRL-1004 100 mg/mL solution

NRL-1004 (olanzapine nasal spray), 100 mg/mL solution

Olanzapine nasal spray

Active Comparator: ZYPREXA IM 10mg/vial

ZYPREXA IntraMuscular (olanzapine) Injection, Powder, for Solution for Intramuscular use, 10 mg/vial

Olanzapine IM injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Maximum observed plasma concentration (Cmax)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Time to maximum plasma concentration (Tmax)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Area under the plasma concentration time curve (AUC) from time zero to the last quantifiable concentration (AUC0-t)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

AUC from time zero extrapolated to infinity (AUC0-inf)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Partial AUC from time zero to 2 hours postdose (AUC0-2 h)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Partial AUC from time zero to 24 hours postdose (AUC0-24 h)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Terminal phase half-life (t½)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Terminal phase rate constant (λz)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Apparent clearance (CL/F)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Apparent volume of distribution (Vz/F)

Time zero to 14 days postdose
Pharmacokinetic parameters of olanzapine in plasma
Time Frame: Time zero to 14 days postdose

Relative bioavailability (Frel)

Time zero to 14 days postdose

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

October 16, 2026

Primary Completion (Estimated)

January 14, 2027

Study Completion (Estimated)

January 14, 2027

Study Registration Dates

First Submitted

October 26, 2026

First Submitted That Met QC Criteria

November 3, 2026

First Posted (Actual)

November 6, 2026

Study Record Updates

Last Update Posted (Actual)

November 6, 2026

Last Update Submitted That Met QC Criteria

November 3, 2026

Last Verified

November 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • OLAN.001.02

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.