Is Estriol vegan?

Estriol is a naturally occurring steroid estrogen hormone used in menopausal hormone therapy, produced either through chemical synthesis or extraction/semi-synthesis involving biological sources such as pregnant animal urine or plant sterols. Due to variable production pathways, its origin is unconfirmed.

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.