According to the Holy Canons of the Church, the Dormition fast calls for an ascetic fast which means no meat or meat products, fish, dairy products, wine, oil, or oil products. Wine and oil are permitted on Saturday and Sunday and fish, wine, and oil are permitted on Transfiguration. While this is the strict definition of the fast each one must prayerfully take into consideration their health, family concerns and spiritual considerations when approaching any fast. One should ask his or her Father Confessor when undertaking any fast. The main point to remember is the fast is not an end in itself, but a means towards an end which is continual abiding in Christ.
See more about the Dormition Fast HERE