Drug

Estradiol Vaginal Ring clinical trials

A product of Estradiol; its studies count on that page too.

studies test it: 4
open now: 0
in phase 3: 0
first study started: 2007

How each study uses Estradiol Vaginal Ring is sorted by a rule, right about nine times in ten. Readers can ask us to read every study one by one.Ask us to read each study

Approvals

The first approval found in each region, with its record

United States: 15 Jul 1954 · DELESTROGEN · NDA 009402 (FDA, Drugs@FDA; as Estradiol)
European Union: 26 Jul 2011 · Zoely · EMEA/H/C/001213 (EMA; as Estradiol; in a combination)

From FDA's Drugs@FDA and Purple Book (through openFDA) and the European Medicines Agency, files of Sept 2026 and 27 Oct 2026. National approvals in Europe and other countries are not included. How this is worked out

How studies write it

Studies that test it under each name

Name

Estring: 3
Estradiol vaginal ring: 1

Studies by the year they started

4 studies that test it; most in 2007 (1)

Studies that test Estradiol Vaginal Ring, by start year
Year	Studies
2007	1
2013	1
2016	1
2018	1

By phase

A phase 1/2 study counts in both.

Phase 2: 2
Phase 4: 2

What it is tested for

Each study’s main condition, where its own words name it, so a study counts once.

Breast Neoplasms: 1
Sexual Dysfunction, Physiological: 1
Hematuria: 1

Who runs them

Industry 0 · Other 4

Polly A. Niravath, MD (1) · Oregon Health and Science University (1) · University of California, San Francisco (1) · Boston Urogynecology Associates (1)

Often tested with

Tested in the same studies.

Testosterone (1)

Related medicines

As reviewed, each with the page that says it.

A dosage form of Estradiol source

Studies

Open first, then newest update. How each study uses Estradiol Vaginal Ring is read from its arms, and is right about nine times in ten. Ask us to read each study. These are the studies that list it as an intervention; a search of ClinicalTrials.gov also finds studies that mention it only in a description, such as earlier treatment.