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Sustiva Levels With Use of a Gel Capsule

Effect of Encapsulation Upon Efavirenz Pharmacokinetics

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01087814
Enrollment
16
Registered
2010-03-16
Start date
2010-02-28
Completion date
2011-09-30
Last updated
2017-03-09

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

Conditions

HIV, HIV Infections

Keywords

efavirenz, Sustiva, pharmacokinetics

Brief summary

We are studying if putting a gel capsule over a standard HIV drug changes the ability of the body to absorb the drug. This is important because we want to be able to study new HIV drugs against the most common drugs used today and the most common is Sustiva, which is also called efavirenz. We will give you Sustiva every day for 5 days and draw blood to see how much is absorbed. Then we will give you Sustiva that has a gel capsule over it for 5 days and we will draw blood to see how much is absorbed.

Interventions

DRUGEfavirenz

Subject will take efavirenz for 5 days.

DRUGOver-encapsulated efavirenz

Subject will take efavirenz that has been over-encapsulated with a gel capsule for 5 days.

Sponsors

University of Minnesota
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

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

Inclusion criteria

* HIV-negative, proven by ELISA * Age: ≥ 18 years old

Exclusion criteria

* Psychiatric or psychological illness that would make adherence to protocol procedures unlikely.

Design outcomes

Primary

MeasureTime frameDescription
Serum Levels of Efavirenz5th day of taking drugSerum levels of efavirenz were measured on the fifth day of taking efavirenz (tablet) and the fifth day of taking an overencapsulated efavirenz.

Countries

United States

Participant flow

Participants by arm

ArmCount
Efavirenz
Both arms received both versions of the drug during the course of the study.
8
Over-encapsulated Efavirenz
Both arms received both versions of the drug over the course of the study.
7
Total15

Withdrawals & dropouts

PeriodReasonFG000FG001
First Intervention (5 Days)Withdrawal by Subject31
Second Intervention (5 Days)Physician Decision10

Baseline characteristics

CharacteristicOver-encapsulated EfavirenzEfavirenzTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
7 Participants8 Participants15 Participants
Age, Continuous25.875 years
STANDARD_DEVIATION 2.53194
26.125 years
STANDARD_DEVIATION 8.45893
26 years
STANDARD_DEVIATION 6.03324
Region of Enrollment
United States
7 participants8 participants15 participants
Sex: Female, Male
Female
4 Participants6 Participants10 Participants
Sex: Female, Male
Male
3 Participants2 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
0 / 80 / 7
serious
Total, serious adverse events
0 / 80 / 7

Outcome results

Primary

Serum Levels of Efavirenz

Serum levels of efavirenz were measured on the fifth day of taking efavirenz (tablet) and the fifth day of taking an overencapsulated efavirenz.

Time frame: 5th day of taking drug

ArmMeasureValue (MEAN)Dispersion
Efavirenz (Tablet)Serum Levels of Efavirenz5151.11 ng/mLStandard Deviation 765.67
Over-encapsulated EfavirenzSerum Levels of Efavirenz4965.08 ng/mLStandard Deviation 1285.48

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