What's the difference between Radix Rehmanniae and Radix Rehmanniae?

Rehmannia glutinosa and Rehmannia glutinosa are mainly distinguished from each other in four aspects: efficacy, appearance, applicable population and preparation method.

1, distinguished from the efficacy.

Rehmannia glutinosa: cold in nature, it has the effects of cooling blood and detoxifying, promoting fluid production and quenching thirst, nourishing yin and tonifying kidney. The well-known Liuwei Dihuang Pill is made of Rehmannia glutinosa as the main raw material.

Rehmannia glutinosa: warm in nature, it has the effects of enriching blood and benefiting qi, nourishing yin and tonifying kidney. Generally, Radix Angelicae Sinensis, Rhizoma Chuanxiong and Radix Paeoniae Alba are mixed with Radix Rehmanniae Preparata.

2. Distinguish between different shapes

Rehmannia glutinosa: most of them are irregular blocks or oblong, the middle is swollen, the two sections are slightly thinner, the length is 6~ 12cm, and the diameter is 3~6cm. Some of them are thin and long, slightly flat and curved. The surface is brownish black or brownish gray, extremely shriveled, with irregular transverse curves. Heavy, soft and tough, not easy to break, dark brown or dark black, shiny and sticky. It tastes a little sweet.

Rehmannia glutinosa: Irregular pieces and fragments of different sizes and thicknesses. The surface is dark black, shiny and sticky. Soft and tough, not easy to break, with dark end face and sweet luster.

3. Different from the applicable population.

Rehmannia glutinosa: nourishing the heart and tonifying the kidney, suitable for people with blood heat and yin deficiency.

Rehmannia glutinosa: nourishing blood and nourishing yin, suitable for people with insufficient blood and essence.

4. Distinguish between different manufacturing methods

Rehmannia glutinosa: fresh rehmannia glutinosa roots are dried and sliced.

Rehmannia glutinosa: Take Rehmannia glutinosa and add wine, dried tangerine peel and Amomum villosum. And repeatedly drying until the appearance turns black.

Extended data:

Precautions for eating Rehmannia glutinosa:

Rehmannia glutinosa as food has a long history among the people. As early as 1000 years ago, people in the rehmannia glutinosa producing areas in the Central Plains "pickled rehmannia glutinosa into pickles and soaked in wine to make tea." People still shred Rehmannia glutinosa for cold dishes and porridge.

Avoid the crowd

Edible: It is suitable for patients with fever due to yin deficiency, dry mouth and tongue, constipation due to yin injury, deficiency of kidney yin, dry throat due to deficiency of fire, eczema, neurodermatitis, irregular menstruation, bloody collapse, and restless fetal movement.

Avoid eating: people with spleen deficiency, diarrhea and stomach deficiency are not suitable for eating. At the same time, Rehmannia glutinosa should not be eaten with Allium macrostemon, leek, radish and green onion, and copper and iron utensils should not be used when frying.

Baidu encyclopedia-rehmannia glutinosa

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Baidu Encyclopedia-Radix Rehmanniae Preparata