Is Estrogen vegetarian?

Estrogen refers to a group of steroid hormones. In cosmetic and pharmaceutical use, it has traditionally been sourced from cow ovaries or concentrated from pregnant mares' urine. Synthetic versions also exist but the ingredient as listed here refers to the animal-derived form.

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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.