CheckVegan

Is Mestranol vegan?

Mestranol

Vegan Vegan
Vegetarian Vegetarian

Mestranol is a synthetic estrogen medication used in combination with progestins in oral contraceptives and hormone therapy. It is chemically manufactured and has no animal origin.

Also known as 19-Norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-methoxy-, (17alpha)-
INCI name Mestranol
CAS number 72-33-3
EC number 200-777-8
CosIng ID 81843
Last reviewed 10 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue