ESTERIFIED ESTROGENS relieves the symptoms of menopause, such as hot flashes or vaginal dryness. It may also be used to treat low estrogen levels. It is also used to reduce the symptoms of breast or prostate cancer. It works by increasing levels of the hormone estrogen in the body. This medication is an estrogen hormone. With the Patient Assistance Program from PAN Foundation, contact the program to see how they can financially help you out.