Processing method of rehmannia root

Rehmannia glutinosa is one of the "four Huai medicines". It has a long history, cool nature, sweet and bitter taste, and has the effects of nourishing yin and kidney, nourishing blood and cooling blood. According to the different effects of the processing methods, let's take a look at the processing methods of Rehmannia glutinosa.

Fresh Rehmannia root

[processing] when using, take fresh raw medicine, remove impurities, wash and cut into sections.

[character] is spindle-shaped or strip-shaped, long 8~24cm, diameter 2~9cm. The outer skin is thin, the surface is light red and yellow, with curved longitudinal wrinkles, bud marks, long horizontal lenticels and irregular scars. Meat is easy to break. The skin of the cross section is yellowish white, orange oil spots can be seen, the wood is yellow and white, and the ducts are arranged radially. The breath is slight, the taste is slightly sweet, slightly bitter.

Sweet, bitter, cold.

Meridian of heart, liver and kidney.

[efficacy] Qingre Shengjin, cool blood, stop bleeding. For fever injuring yin, tongue Jiang annoying thirst, spot and rash, hematemesis, dysphagia, sore throat.

Rehmannia glutinosa

[processing] take the original medicine, remove impurities, wash, soften, cut thick slices and dry.

[character] most of them are flat, round and thick, with a diameter of 2~7cm. The surface is grayish brown to dark brown, with irregular wrinkles. The section is brownish black or brownish gray, slightly glossy and sticky. The quality is soft and tough. The breath is slight, the taste is slightly sweet.

Sweet, cold

Meridian of heart, liver and kidney.

[efficacy] clear heat and cool blood, nourish yin and invigorate fluid. It is used for febrile disease, tongue irritation and thirst, yin deficiency and internal heat, bone steam and fatigue heat, internal heat to eliminate thirst, hematemesis, hematemesis, spot and rash. Raw Rehmannia glutinosa charcoal nourishes yin and stops bleeding. Used for all kinds of hemorrhagic disease.

Raw Rehmannia charcoal

[processed] take raw Rehmannia glutinosa, stir-fry until the smoke is thick, the surface is bulging and show charcoal black, when the interior is brown, spray water slightly, wipe out the sparks, take out and dry.

[character] the surface is scorched black and the inside is brown. The quality is crisp. Slightly scorched gas, slightly bitter taste.

Sweet, bitter, slightly astringent, cold.

Meridian of heart, liver and kidney.

[efficacy] clearing heat, invigorating fluid, nourishing yin and nourishing blood, for symptoms such as febrile fever entering camp blood, body heat, dry mouth, crimson or red tongue.

Cooked Rehmannia glutinosa

[processed] take the raw Rehmannia glutinosa, which is moistened with water, put it in a suitable container, steam for about 6-8 hours, simmer overnight, when both inside and outside are moist black, take out, dry until 70-80% dry.

[character] all are moist black and shiny. Soft and tough, not easy to break, strong stickiness. It tastes sweet.

Sweet, lukewarm.

Liver and kidney meridians.

[efficacy] Nourishing yin and tonifying blood, tonifying essence and filling marrow. For liver and kidney yin deficiency, soft waist and knees, bone steaming hot flashes, night sweats and spermatorrhea, internal heat to eliminate thirst, blood deficiency and yellowing, palpitation, irregular menstruation, bleeding, vertigo, tinnitus, early whitening. Cooked Rehmannia charcoal to replenish blood and stop bleeding. Used for punching any deficiency, collapse and leakage.

Cooked Rehmannia glutinosa charcoal

[processing] take cooked Rehmannia glutinosa, stir-fry until the smoke is thick, the surface is bulging and scorched black, when the interior is brown, spray water slightly, extinguish the sparks, take out and dry.

[character] the surface is scorched black, the interior is dark brown, and the quality is brittle. Slightly scorched gas, slightly bitter taste.

Sweet, slightly astringent, lukewarm.

Liver and kidney meridians.

[efficacy] Nourishing yin and tonifying blood, tonifying essence and filling marrow.