1 The correct way to soak Radix Rehmanniae in water is to wash Radix Rehmanniae with clear water, dry the surface moisture, break it into small pieces, soak it for 3 ~ 5 minutes, and then soak it in water.

2. Rehmannia glutinosa is also known as wild yellow, rehmannia glutinosa and hip hop flower. Rehmannia glutinosa belongs to heat-clearing and blood-cooling drugs (to relieve blood heat by clearing heat). The genus Rehmanniaceae is fresh or dried root tuber of Rehmannia glutinosa.

3. Radix Rehmanniae enters the lung meridian. Rehmannia glutinosa is sweet and cold. Radix Rehmanniae has the effects of promoting fluid production, nourishing yin, clearing away heat and cooling blood. Rehmannia glutinosa is good at treating internal heat due to yin deficiency, thirst quenching due to internal heat (symptoms such as excessive eating, excessive drinking and excessive urine), fever, red tongue, polydipsia, hematemesis, bone steaming and fatigue, epistaxis, spots and rashes, etc.