findmyKOL
Clinical trialNCT03335163CompletedPhase 1Interventional

The Effect of Topiramate on Etonogestrel Concentrations in Contraceptive Implant Users

SponsorUniversity of Colorado, DenverEnrollment48ContraceptionMigraineMigraine;Menstrual
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

A prospective, non-inferiority study to evaluate the pharmacokinetic effect of topiramate on serum Etonogestrel (ENG) levels in contraceptive implant users.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • University of Colorado Denver

    Aurora, Colorado, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Topiramate →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
15 Mar 2018
Primary completion
22 Apr 2021
Completion
22 Apr 2021
Last update posted
13 Jul 2022
Registered enrollment
48
Registry id
NCT03335163
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.