I have been using this product since January 2011 for pre-menopausal symptoms. Bought the product on an older Amazon listing. I felt the difference in just 4 days of taking this. All the hot flashes and mood swings were gone, and within weeks I was able to sleep through the night again. I also have more energy and no longer need a nap during the day. This product really helps to balance the hormones by balancing your endocrine system. I recommend it highly for any woman who’s suffering from hormonal imbalance or changes.