The difference between raw astragalus and roasted astragalus is that they are prepared differently and have slightly different effects.
Raw astragalus is a leguminous herb that is the root of Mongolian astragalus or Astragalus membranaceus. Raw astragalus is a sun-dried and still raw herb whose main effects are to replenish qi and consolidate the epidermis (consolidating the muscle surface by replenishing qi), detoxify and expel pus, and promote the growth of muscles and swellings, etc. It is used for fatigue and weakness, qi deficiency, night sweats (sweating abnormally after falling asleep, but sweating stops after waking up), colds, and sores and poisons.
Roasted Astragalus is usually made by slicing traditional Astragalus and adding honey. Roasted astragalus is stronger than raw astragalus in tonifying qi and elevating yang (replenishing qi so that yang qi rises), and is suitable for shortness of qi, prolapsed internal organs, etc. It is also helpful for overwork and poor quality sleep.
It should not be used during colds and flu, and if it must be taken, it should be used under the guidance of a doctor, not self-medication.