FDA Orange Book

Is there a generic for Estring?

Estring contains estradiol. Orange Book status for every listed strength, the approved generic makers, and the listed patents and exclusivities.

Source: FDA Orange Book data file dated 2026-10-09. Publisher page

No. The Orange Book lists no active FDA-approved generic (ANDA) for Estring (estradiol).

Run it in Rivvi

Map Estring and your other top fills to their generics

Every strength in RxNorm, with brands that have no generic flagged.

Build the map

Free to start. Opens Rivvi, the AI workspace for healthcare teams.

Estring products in the Orange Book

Estring products and approved generics
Form and route	Strength	Brand status	Brand TE	Active generics	Generic TE codes
insert, extended release, vaginal	0.0075MG/24HR	Marketed (Rx)	None	0	None

NDA 020472, held by PFIZER INC. Active generics are ANDA products in the Orange Book prescription list with the same ingredient, dosage form, route and strength.

Estring NDC codes

0013-1042

Questions

Is there a generic for Estring?

No. The Orange Book lists no active FDA-approved generic (ANDA) for Estring (estradiol).

What is the generic name for Estring?

The active ingredient in Estring is estradiol, per the FDA Orange Book.

What does a therapeutic equivalence code mean?

In the Orange Book, codes that start with A (such as AB) mean FDA considers the product therapeutically equivalent to the reference drug. Codes that start with B mean FDA does not, at this time, consider the product therapeutically equivalent.

Is there a generic for Estring?

Map Estring and your other top fills to their generics

Estring products in the Orange Book

Estring NDC codes

Questions

More on Estring and Estradiol

Try it on your own data today.