The daily dosage of Radix Rehmanniae Preparata is 20g. It's not a question of when it will be effective. Because of the synergistic effect of traditional Chinese medicine, I don't think the application of single flavor will be very good. Therefore, angelica can be added to replenish blood and astragalus can replenish qi and blood. Because qi can produce blood. This is called Danggui Buxue Decoction.

After adding astragalus, there is no need to add dried tangerine peel. You can add a little if you want to use it. But what you are talking about is blood deficiency and yin deficiency. You may wish to add Atractylodes macrocephala, strengthen the spleen and nourish blood. If you want to add dried tangerine peel, you can add it later, boil and fry for five minutes.