# ESTRING — FDA application NDA020472

Informational only - not investment advice.

Application NDA020472 · type NDA · FDA status: approved · original approval 1996-04-26

Listed sponsor: PFIZER · [PFE company profile](/company/PFE/) · exact_unique

Sponsor as listed in Drugs@FDA at retrieval (2026-08-07); FDA sponsor listings can lag ownership transfers.

## FDA application facts

| Product | FDA-listed trade name | Active ingredient | Dosage form | Route | Strength | Marketing status | TE code | RLD |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 001 | ESTRING | ESTRADIOL | INSERT, EXTENDED RELEASE | VAGINAL | 0.0075MG/24HR | Prescription | not listed | Yes |

## Orange Book patent and exclusivity listings

No Orange Book patent or exclusivity listings joined to this application.

Patent and exclusivity dates are regulatory listings from the FDA Orange Book; no relationship to revenue or future sales is stated or implied.

## Compound cross-links

- ESTRADIOL · UNII 4TI98Z838E · [lmmol compound VOXZDWNPVJITMN-ZBRFXRBCSA-N](https://lmmol.com/compound/VOXZDWNPVJITMN-ZBRFXRBCSA-N)

Ingredient–compound links use FDA openFDA/GSRS identifiers and an exact lmmol InChIKey join. Ingredient names cannot create a link.

## Related pages

- [Sponsor company](/company/PFE/)
- [FDA-approved application index](/drug/)
- [Large-cap biopharma](/compare/pharma/)

Sources: https://www.fda.gov/drugs/drug-approvals-and-databases/drugsfda-data-files · https://www.fda.gov/drugs/drug-approvals-and-databases/orange-book-data-files · https://api.fda.gov/drug/drugsfda.json?search=application_number:NDA020472. FDA data retrieved 2026-08-07.

Regulatory listing data as published by FDA; not medical or investment advice.