Ethinyl estradiol, Ethynodiol diacetate

Demulen 50 (21 Day Pack)

50 MCG + 1 MG TabletCanadaCancelledAuthorised 31 Dec 1970

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In other countries

The same active substances on other registers, the same brand first.

Demulen 1/35-21United States · 0.035MG; 1MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons** · tablet · GD Searle LLCSame brand
Demulen 1/35-28United States · 0.035MG; 1MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons** · tablet · GD Searle LLCSame brand
Demulen 1/50-21United States · 0.05MG; 1MG · tablet · GD Searle LLCSame brand

Documents

The official texts, at the regulator.

Register entryHealth Canada

Two medicines in one question?

Name two or more medicines and Osler runs an interaction check. A severe interaction is stated at the very top of the answer.

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Ethinyl estradiol, Ethynodiol diacetate

Demulen 50 (21 Day Pack)

50 MCG + 1 MG TabletCanadaCancelledAuthorised 31 Dec 1970

Open in the registerAsk Osler about it

This page is kept for reference and is not offered to search engines.

In other countries

The same active substances on other registers, the same brand first.

Documents

The official texts, at the regulator.

Register entryHealth Canada

Two medicines in one question?

Name two or more medicines and Osler runs an interaction check. A severe interaction is stated at the very top of the answer.

Discover Osler

Sources and licences

Compiled by Prognia from the public register below; the register’s text is the official one.

Health Canada, Canada

Health Canada, Drug Product Database, drugproduct API, entire response observed 2026-10-10T15:12:07.336870+00:00; native facts projected by Prognia.

Licence: Open Government Licence Canada · Added 13 Oct 2026

Report an error or request removalCorrections from the holder or the register are welcome.

Prognia shows this product information for reference and learning. It is not treatment advice and can lag behind the official text. Always check the current product information and local protocols before prescribing.

At a glance

Active substances: Ethinyl estradiol, Ethynodiol diacetate
Strength: 50 MCG + 1 MG
Dosage form: Tablet
Route: Oral
Register: Canada (Health Canada)
Status: Cancelled
Status in the register: Cancelled Post Market
Authorised: 31 Dec 1970
Registration: DIN 00028630
Marketing authorisation holder: Pfizer Canada Ulc
ATC code: G03AA01
Group: Genito-urinary system and sex hormones
Supply: PRESCRIPTION

Cancelled

Demulen 50 (28 Day Pack)Ethinyl estradiol + Ethynodiol diacetate · 50 MCG + 1 MG · TabletCanadaCancelled