Track estriol in Peptimes
Estriol (estra-1,3,5(10)-triene-3,16α,17β-triol) is a steroid estrogen. (Source: FDA's substance registry (GSRS).)
Is estriol FDA-approved?
No. Drugs@FDA lists no application with estriol as an active ingredient, so no estriol product, compounded or otherwise, is FDA-approved.
Estriol
Also: oestriol, E3
- Status label in the Peptimes Library
- Not FDA-Approved
- Routes in Peptimes
- Other
- Updated
- 25 Oct 2026
US regulatory status
FDA status
Not FDA-Approved. Drugs@FDA lists no application with estriol as an active ingredient, so no estriol product, compounded or otherwise, is FDA-approved.
Source: Drugs@FDA, checked 25 Oct 2026
How to track it in Peptimes
Add estriol in My Protocols and set the schedule you already follow: days of the week, times of day and a start date. Peptimes never suggests an amount when you log or schedule a dose. Its Library entry shows the status label “Not FDA-Approved”: no estriol product is FDA-approved.
- Logging: the amount you took and how you feel. It’s logged as Other (vaginal), so there’s no injection site to record.
- Reminders and history: reminders at your times, Dose History, the Calendar and CSV or JSON export work as described on the HRT tracker app page.
Peptimes is a tracking app, not medical advice. Talk to a licensed clinician about your treatment. Peptimes doesn’t sell estriol or any other compound.
More sources
- FDA, Drugs@FDA, search page, checked 25 Oct 2026: no application lists estriol as an active ingredient.
- FDA, Global Substance Registration System, Estriol, checked 25 Oct 2026: its chemical name, and its WHO ATC class, estrogens (G03CA04).
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