HealthyPhase 3NCT01246791

Pharmacokinetics of NPC-01 After Single Oral Administration in Healthy Female Volunteers

A Phase 3 study testing NPC-01 in people with Healthy, run by Nobelpharma.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Trial summary

The purpose of this study is to assess the pharmacokinetic profiles of norethisterone and ethinyl estradiol after single oral administration of NPC-01 in healthy female volunteers. Pharmacokinetics of norethisterone and ethinyl estradiol will be evaluated on the basis of AUC, Cmax, tmax, t1/2, MRT, kel and AUC∞. Read more about this study

Who is it for?: Ages 20 to 35 years, women onlyHealthy volunteers can take part
Conditions the study is for: Healthy
What is being tested?: NPC-01
Type of treatment: Pill or oral medicine
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 12 participants
Where: No sites listed yet
Study dates: Nov 2010to May 2011
Phase: Phase 3
Are there results?: Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 20 to 35 years
Women only
Healthy volunteers accepted
Adult

Who may be able to join

Healthy female aged between 20 to 35 years
BMI:18.0-26.0

Who cannot join

Females who are pregnant
Drug use affecting sex hormone secretion

About this study

Official title: A Single Dose Pharmacokinetics Study of NPC-01 (1mg Norethisterone and 0.02mg Ethynyl Estradiol) in Healthy Female Volunteers

The purpose of this study is to assess the pharmacokinetic profiles of norethisterone and ethinyl estradiol after single oral administration of NPC-01 in healthy female volunteers.

Pharmacokinetics of norethisterone and ethinyl estradiol will be evaluated on the basis of AUC, Cmax, tmax, t1/2, MRT, kel and AUC∞.

Conditions: Healthy
Being tested: NPC-01
Keywords: NPC-01, Pharmacokinetics, Healthy female volunteer, Norethisterone, Ethinyl Estradiol

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

NPC-01Drug
Also called Norethisterone and Ethinyl Estradiol
NPC-01, contains 1mg norethisterone and 0.02mg ethinyl estradiol will be administered orally under the fasting condition

Study groups in NCT01246791
Study group	Role	What they receive
NPC-01	Experimental	Single oral administration of NPC-01 Receives: Drug: NPC-01

What is being measured

The primary outcome is the main question the study is designed to answer.

Area Under the Plasma Concentration Versus Time Curve (AUC) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of area under the plasma concentration versus time curve (AUC) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Area Under the Plasma Concentration Versus Time Curve (AUC) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of area under the plasma concentration versus time curve (AUC) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Peak Plasma Concentration (Cmax) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of peak plasma concentration (Cmax) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Peak Plasma Concentration (Cmax) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of peak plasma concentration (Cmax) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Time to Peak Plasma Concentration (Tmax) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of time to peak plasma concentration (Tmax) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Time to Peak Plasma Concentration (Tmax) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of time to peak plasma concentration (Tmax) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Plasma Half Life (t1/2) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of plasma Half life (t1/2) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Plasma Half Life (t1/2) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of plasma Half life (t1/2) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Mean Residence Time (MRT) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of mean residence time (MRT) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Mean Residence Time (MRT) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of mean residence time (MRT) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Elimination Rate Constant (Kel) on Norethisterone of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of elimination rate constant (kel) of norethisterone that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Elimination Rate Constant (Kel) on Ethinyl Estradiol of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of elimination rate constant (kel) of ethinyl estradiol that are active substances of NPC-01.
Measured: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

Nov 2010May 2011

First posted23 Nov 2010 (estimated)
Study startNov 2010
Primary completionMay 2011
Study completionMay 2011

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
Other trials for HealthyStudies of the same condition, open and under way.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase 3
Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Masking: None (open label)
Enrolment: 12 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT01246791
Sponsor's protocol ID: NPC-01-3
Status last verified: Jun 2025
First submitted: 18 Nov 2010
Last updated: 17 Jun 2025
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: No
FDA-regulated drug: No
FDA-regulated device: No

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

Official record

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All Healthy trials

Study at a glance

From the registry record, last updated by the sponsor on 17 Jun 2025. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: A Single Dose Pharmacokinetics Study of NPC-01 (1mg Norethisterone and 0.02mg Ethynyl Estradiol) in Healthy Female Volunteers
ClinicalTrials.gov ID: NCT01246791
Acronym / sponsor ID: NPC-01-3
Conditions: Healthy
Keywords: NPC-01, Pharmacokinetics, Healthy female volunteer, Norethisterone, Ethinyl Estradiol
Phase: Phase 3
Study type: Interventional
Recruitment status: Completed
Enrolment: 12 participants (actual)
Lead sponsor: NobelpharmaIndustry (pharma, biotech, devices)
Study start: Nov 2010
Primary completion: May 2011 (actual)
Study completion: May 2011 (actual)
First posted: 23 Nov 2010 (estimated)
Results: Posted 17 Jun 2014

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

The purpose of this study is to assess the pharmacokinetic profiles of norethisterone and ethinyl estradiol after single oral administration of NPC-01 in healthy female volunteers.

Pharmacokinetics of norethisterone and ethinyl estradiol will be evaluated on the basis of AUC, Cmax, tmax, t1/2, MRT, kel and AUC∞.

Study design

Primary purpose: Treatment
Allocation: Not applicable
Intervention model: Single group
Masking: None (open label)
Number of arms: 1

Arm	Type	Receives
NPC-01	Experimental	Drug: NPC-01Single oral administration of NPC-01

Who may qualify

Ages: 20 to 35 years
Sex: Female only
Healthy volunteers: Accepted
Age groups: Adult

Key inclusion criteria (2 listed)

Healthy female aged between 20 to 35 years
BMI:18.0-26.0

Key exclusion criteria (2 listed)

Females who are pregnant
Drug use affecting sex hormone secretion

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
NPC-01Also: Norethisterone and Ethinyl EstradiolNPC-01, contains 1mg norethisterone and 0.02mg ethinyl estradiol will be administered orally under the fasting condition	Drug	NPC-01

Primary outcome

Area Under the Plasma Concentration Versus Time Curve (AUC) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of area under the plasma concentration versus time curve (AUC) of norethisterone that are active substances of NPC-01.
Area Under the Plasma Concentration Versus Time Curve (AUC) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of area under the plasma concentration versus time curve (AUC) of ethinyl estradiol that are active substances of NPC-01.
Peak Plasma Concentration (Cmax) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of peak plasma concentration (Cmax) of norethisterone that are active substances of NPC-01.
Peak Plasma Concentration (Cmax) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of peak plasma concentration (Cmax) of ethinyl estradiol that are active substances of NPC-01.
Time to Peak Plasma Concentration (Tmax) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of time to peak plasma concentration (Tmax) of norethisterone that are active substances of NPC-01.
Time to Peak Plasma Concentration (Tmax) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of time to peak plasma concentration (Tmax) of ethinyl estradiol that are active substances of NPC-01.
Plasma Half Life (t1/2) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of plasma Half life (t1/2) of norethisterone that are active substances of NPC-01.
Plasma Half Life (t1/2) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of plasma Half life (t1/2) of ethinyl estradiol that are active substances of NPC-01.
Mean Residence Time (MRT) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of mean residence time (MRT) of norethisterone that are active substances of NPC-01.
Mean Residence Time (MRT) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of mean residence time (MRT) of ethinyl estradiol that are active substances of NPC-01.
Elimination Rate Constant (Kel) on Norethisterone of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of elimination rate constant (kel) of norethisterone that are active substances of NPC-01.
Elimination Rate Constant (Kel) on Ethinyl Estradiol of NPC-01
Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01
Multiple blood samples will obtains at pretreatment(0 hour), 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0 and 24.0 hours after dosing of NPC-01(1mg norethisterone and 0.02mg ethinyl estradiol) and determination of elimination rate constant (kel) of ethinyl estradiol that are active substances of NPC-01.

Results and safety

Results posted to the registry on 17 Jun 2014, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
NPC-01	12	12

Primary outcome: Area Under the Plasma Concentration Versus Time Curve (AUC) on Norethisterone of NPC-01

Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01. Mean (Standard Deviation). Unit: ng･hr/mL

Measure	NPC-01 n = 12
Value	69.183 (36.316)

Primary outcome: Area Under the Plasma Concentration Versus Time Curve (AUC) on Ethinyl Estradiol of NPC-01

Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01. Mean (Standard Deviation). Unit: pg･hr/mL

Measure	NPC-01 n = 12
Value	368.123 (170.882)

Primary outcome: Peak Plasma Concentration (Cmax) on Norethisterone of NPC-01

Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01. Mean (Standard Deviation). Unit: ng/mL

Measure	NPC-01 n = 12
Value	12.481 (6.205)

Primary outcome: Peak Plasma Concentration (Cmax) on Ethinyl Estradiol of NPC-01

Time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01. Mean (Standard Deviation). Unit: pg/mL

Measure	NPC-01 n = 12
Value	55.783 (17.201)

Adverse events

Time frame: From initiation of study drug administration to follow up visit (day 7±1 day). Other adverse events reported at 0% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
NPC-01	0 of 12 (0%)	3 of 12 (25%)	Not reported

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 17 Jun 2025.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Takefumi Matuo, MD principal investigator

Hyogo Prefectural AWAJI Hospital

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing NPC-01 in people with Healthy, run by Nobelpharma.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 17 Jun 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Area Under the Plasma Concentration Versus Time Curve (AUC) on Norethisterone of NPC-01 (time frame: 0, 0.5, 1.0, 1.5, 2.0, 4.0, 6.0, 9.0, 12.0, 24.0 hours after single dosing of NPC-01). The study lists 12 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01246791.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jun 2025.