NCT02112123

Brief Summary

The purpose of this study is to investigate the pharmacokinetic properties of icariin, an active ingredient in the over-the-counter supplement, Horny Goat Weed.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
24

participants targeted

Target at P25-P50 for phase_1

Timeline
Completed

Started Apr 2014

Typical duration for phase_1

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2014

Completed
8 days until next milestone

First Submitted

Initial submission to the registry

April 9, 2014

Completed
2 days until next milestone

First Posted

Study publicly available on registry

April 11, 2014

Completed
2.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2016

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2016

Completed
Last Updated

August 18, 2017

Status Verified

August 1, 2017

Enrollment Period

2.4 years

First QC Date

April 9, 2014

Last Update Submit

August 15, 2017

Conditions

Keywords

icariinpharmacokineticshealthy participants

Outcome Measures

Primary Outcomes (1)

  • Blood concentration levels of icariin

    24 hours

Secondary Outcomes (3)

  • A-SEX

    5 days

  • SAFTEE

    5 days

  • PT/PTT levels

    5 days

Study Arms (6)

Placebo

PLACEBO COMPARATOR

Matching placebo given for 5 days (qd po)

Dietary Supplement: Matching placebo

Icariin - 100 mg/day

ACTIVE COMPARATOR

Icariin given at 100 mg/day (qd po) for 5 days

Drug: Icariin

Icariin - 200 mg/day

ACTIVE COMPARATOR

Icariin given at 200 mg/day (qd po) for 5 days

Drug: Icariin

Icariin - 400 mg/day

ACTIVE COMPARATOR

Icariin given at 400 mg/day (qd po) for 5 days

Drug: Icariin

Icariin - 840 mg/day

ACTIVE COMPARATOR

Icariin given at 840 mg/day (qd po) for 5 days

Drug: Icariin

Icariin - 1680 mg/day

ACTIVE COMPARATOR

Icariin given at 1680 mg/day (qd po) for 5 days

Drug: Icariin

Interventions

Also known as: Horny Goat Weed, epimedium extract
Icariin - 100 mg/dayIcariin - 1680 mg/dayIcariin - 200 mg/dayIcariin - 400 mg/dayIcariin - 840 mg/day
Matching placeboDIETARY_SUPPLEMENT
Placebo

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy men and women
  • Ages 18 - 50 years
  • BMI between 18.5 and 30
  • Ability to read and speak English
  • Education of 12 or more years or equivalent (at least GED received)

You may not qualify if:

  • Medication changes in the past 30 days
  • History of psychotropic medication therapy in the past 30 days
  • Current or past 30 days opioid therapy
  • Current or past 30 days erectile dysfunction therapy
  • Significant medical conditions
  • Hypertensive blood pressure, defined as either systolic pressure \> 140 or diastolic pressure \> 90
  • Baseline heart rate \> 100 bpm or \< 50 bpm
  • History of major psychiatric illness
  • History of drug/alcohol abuse or current tobacco use
  • Vulnerable populations including pregnant or nursing women, the incarcerated, or individuals with severe cognitive disorders
  • History of allergic reaction or contraindication to icariin
  • Baseline QIDS score \> 7, current suicidal ideation, or history of suicide attempt
  • Education history that includes Special Education or history of mental disability
  • Clinically significant abnormalities on baseline labs and ECG results
  • Current participation in any other pharmacotherapy studies

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

UT Southwestern Medical Center

Dallas, Texas, 75390, United States

Location

MeSH Terms

Interventions

icariin

Study Officials

  • E. Sherwood Brown, M.D., Ph.D.

    University of Texas Southwestern Medical Center

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

April 9, 2014

First Posted

April 11, 2014

Study Start

April 1, 2014

Primary Completion

September 1, 2016

Study Completion

December 1, 2016

Last Updated

August 18, 2017

Record last verified: 2017-08

Locations