How to distinguish the authenticity of Gastrodia elata?

The rhizomes of Gastrodia elata are used medicinally to treat dizziness, convulsions in children, and numbness of limbs. It is a valuable traditional Chinese medicine. It can be used in combination with Qiongzhen Ganoderma to treat headaches and insomnia. The following is the method of identifying the authenticity of Gastrodia elata collected and compiled by the editor of SmartView. I hope it will be helpful to you.

How to identify the authenticity of Gastrodia elata 1. Some remaining epidermal tissue. The cell walls in single to several rows on the outer side of the cortex are slightly thickened, and sparse wall pores can be seen; the thick-walled cells are polygonal or oblong, often thickened in a bead shape, and slightly lignified. The parenchyma cells of the pericycle are larger, round or polygonal, and pits are sometimes visible. The vascular bundles are tough outside or around, scattered, with two to several vessels in groups, not lignified. Calcium oxalate needle crystal bundles can be seen in the parenchyma, some scattered; the parenchyma cells contain polysaccharide clumps, which appear brown or light brown-purple when exposed to iodine solution.

2. Take the powder and make it into 10% water immersion solution, add 2-4 drops of iodine test solution, it will appear purple to wine red.

3. Take the powder and make it into 10% ethanol (45%) immersion solution. Add 0.5ml of mercury nitrate test solution and heat. The solution will appear rose red and produce yellow precipitate.

4. Take the powder and make it into 5% ethanol immersion solution, and display stone green fluorescence under ultraviolet light.

Efficacy and usage of Gastrodia elata 1. Nature and flavor: sweet, flat.

① "Ben Jing": pungent and warm.

② "Treatise on the Properties of Medicine": non-toxic. It tastes sweet and flat.

③"Medicine Origin": flat Qi, bitter taste.

2. Meridian return: Enters the liver meridian.

① "Compendium": Enters the liver meridian Qi division.

② "Lei Gong Pao Pharmaceutical Properties": Enters the liver and bladder meridians.

③ "New Compilation of Materia Medica": Enters the spleen, kidney, liver, gallbladder, and heart meridian.

3. Efficacy: calm wind and calm panic. It can be used to treat dizziness, dark eyes, headache, numbness of limbs, hemiplegia, slurred speech, and epilepsy in children.

① "Herbal Classic": It controls bad qi. Taking it for a long time can increase the strength of the qi and make the yin fat and healthy.

② "Bie Lu": eliminate carbuncle swelling, lower branch fullness, hernia, and bleeding.

③ "Treatise on the Properties of Medicine": Treats stubborn paralysis due to cold air, paralysis, excessive speech, confusion, and loss of ambition.

④ "Rihuazi Materia Medica": supports Yang Qi, replenishes the five kinds of labor and seven injuries, unblocks the blood vessels, and opens the mind.

⑤ "Kaibao Materia Medica": It treats rheumatic paralysis, limb spasm, infantile epilepsy, qi fright, sharpens the waist and knees, and strengthens muscles.

⑥Zhang Yuanyu: Treats dizziness and headache due to wind deficiency.

⑦ "Compendium of Materia Medica": Mainly caused by head wind, headache, dizziness, epilepsy, strong spasms of limbs, difficulty in speaking, all strokes, and wind phlegm.

4. Usage and dosage: Oral administration: decoction, 1.5 to 3 yuan; or take into pills or powder.

Taboos on the use of Gastrodia elata "Lei Gong Pao Zhi Lun": Use the root of Yufengcao instead of Gastrodia elata. If the two are used together, it will cause intestinal knot. Common adverse reactions that occur when taking Gastrodia elata include: dizziness, nausea, chest tightness, skin pimples with itching, etc. In some cases, facial or whole body edema, and even hair loss may occur. Not only will such reactions occur when using Gastrodia elata alone, some people will also develop symptoms of allergies to Gastrodia elata after taking gastrodia elata-containing decoctions such as Banxia Atractylodes and Gastrodia elata decoction, and Chinese patent medicines such as Gastrodia elata pills and Gastrodia Armillaria sugar-coated tablets. . The ancients have long known about the side effects or contraindications of Gastrodia elata. As the "Compendium of Materia Medica" says: "If you take Gastrodia elata for a long time, red elixirs will appear all over your body." "Ben Jing Feng Yuan" also says: "Although Gastrodia Gastrodia is not drying in nature, it is still a wind preparation. It should not be used indiscriminately if there is blood deficiency, no wind, burning headache, dry mouth and constipation." ?Wu Yiluo, a famous doctor in the Qing Dynasty, even said bluntly: ?It should not be used by people with weak blood and non-true strokes. Modern pharmacological experiments have proven that Gastrodia elata has certain toxic and side effects. The toxic dose of Gastrodia elata is more than 40 grams, and the incubation period of poisoning is 1-6 hours.