When in doubt, estrogen generation begins to decay from around 35 years. The organization of fake estrogens can thus prompt an abundance of estrogen, which involves an expanded danger of hormone-related malignancies. Utrogestan: what is it and what is it utilized for? Utrogestan is regularly utilized as a subordinate to estrogen treatment. Utrogestan contains the dynamic substance progesterone, a female sex hormone in the progestagens gathering.