Stigmata Maidis,Corn Silk:Administration Guide and Suggestions.


Stigmata Maidis,Corn Silk:Administration Guide and Suggestions.

Corn Silk Zea Mays Silk CAS 84696-06-0 Stigmata Maidis Zea mays Stigmas and styles Corn stalk  Indications and Dosage from CCHM for Corn Silk(Yu Mi Xu):The CCHM defined the herb Corn Silk(Yu Mi Xu) as the stylus and flower head of the Poaceae family(Gramineae or true grasses family) plant Zea mays L.,and noted the herb Corn Silk(Yu Mi Xu) taste sweet,tasteless,nature plain.Enter into bladder,liver,gallbladdermeridians.Main functions inducing diuresis to reduce edema,calm the liver and cholagogue.Indicated for acute nephritis and chronic nephritis,edema(hydroncus,oedema,dropsy),acute hepatitis and chronic hepatitis,hypertension(high blood pressure),diabetes mellitus(DM,glycuresis,sugar diabetes),chronic nasosinusitis(chornic sinusitis),lithangiuria,biliary calculi,dysuria(difficulty in micturition),jaundice with damp-heat pathogen,aid prevent habitual abortion.Suggested Dosage 0.5~2 liang,as decoction.(1 liang equal to about 50grams).(2)

 Indications and Dosage from DCTM for Corn Silk(Yu Mi Xu):The DCTM(Dictionary of the Chinese Traditional Medicine) defined the herb Corn Silk(Yu Mi Xu) as the stylus of the Poaceae family(Gramineae or true grasses family) plant Zea mays L.It noted the herb taste sweet,nature plain.Main functions diuresis,discharge heat,calm the liver,cholagogue.Indicated for nephritis with edema,beri-beri(barbiers,dermatophytosis),icteric hepatitis,hypertension(high blood pressure),cholecystitis,gall-stone,diabetes mellitus(DM,glycuresis,sugar diabetes),blood ejection and spontaneous external bleeding,nasosinusitis(acute and chronic sinusitis),acute mastitis.Suggested Dosage internal as decoction 1~2 liang(1 liang equal to about 50grams),or nature-preservative burning(charred medicinal herb with its property retained) then grined powder.External burns smokes and inhale.(3)

 Indications and Dosage from CHMM for Corn Stigma(Yu Mi Xu):The CHMM(Chinese Herbal Materia Medica) defined the herb Corn Stigma(Yu Mi Xu) as the stylus and stigma of the Poaceae family(Gramineae or true grasses family) plant Zea mays L.It noted the herb taste sweet,tasteless,nature plain.Enter into kidney,stomach,liver,gallbladder meridians.Main functions inducing diuresis to reduce edema,clear the liver and cholagogue.Indicated for edema(hydroncus,oedema,dropsy),dripping discharge of urine,jaundice,cholecystitis,cholelithiasis(gall-stone),hypertension(high blood pressure,feritin),diabetes mellitus(DM,glycuresis,sugar diabetes),breast milk stoppage.Suggested Dosage:internal as decoction 15~30grams,big dose 60~90 grams,or nature-preservative burning(charred medicinal herb with its property retained) then grined powder.External proper amount,burns smokes and inhale.(4)

 Indications and Dosage from APA Guide for Corn Silk:The APA Guide book give some guide of indications and dosage for the herb Corn Silk,it classified 1 species under the title "Corn Silk",which included "Zea mays L.Family:Gramineae,common name:in China,referred to as Stigmata maydis,yu mi xu",it defined the medicinal parts are "the fine silk,or tassel,of the seedhead(popularly called an ear) of this universally recognized annual grass is used medicinally.",it give some brief introduction about the most common uses of the herb by modern western herbalists,noted that "What It Is Used For:Modern Western herbalists carry on a long-standing folk tradition in recommending corn silk tea as a diuretic('water pill')to reduce inflammation and painful symptoms related to urinary tract infections,cystitis,bladder stones,prostate disorders,premenstrual syndrome,fluid retention,obesity,gout,dropsy,rheumatism,and various other disorders.It was once quite popular for treating gonorrhea.Corn silk's popularity as a diuretic endures in parts of Europe,Asia,and other regions of the world.",what more it also give some dosage suggestions of the herb and noted "Dosage Commonly Reported:An infusion made using 1 teaspoon corn silk per cup of water is drunk several times per day.Commercially prepared liquid corn silk extract or tincture is taken according to package directions.",with quote of a 1992 Vietnamese trial of the herb,it declared the herb corn silk failed in diuretic action and suspect its uses to alleviate the ailments such like fluid retention etc.(5)

 Indications and Dosage from PDR for Corn Silk(Zea mays):The PDR 4th edition defined the herb Corn Silk(Zea mays) as from botanical origin Zea mays,and noted the "medicinal parts is the seed",from its indications part it understand the herb part is the seed or "maize",this could not be a mistake as the seed is also used,but from the indications it noted for the "maize",such like "disorder of the urinary tract" etc which may attributed to the silk or stigmata,although the maize could be used too and property similar,but the silk more used as a herb,botanical part declared as "seed" could not say totally wrong but actually Not properly,and in the section "production" it noted the herb collected are silk flowers,"production:corn silk flowers are the styles and stigmas of Zea mays...are gatherd for medicinal or therapeutic purposes.They are removed by hand and dried in the shade.",seems their understanding of the herb and its part is in a chaotic status,it give some brief indications of the herb uses in Folk medicine and Chinese medicine mentioned for "Maize",but actually these indications in recipes are normally from property of the corn silk,as it noted,"Unproven Uses:Maize is used for disorders of the urinary tract.Chinese Medicine:Maize is used in the treatment of liver disorders.",it give some suggestions on precautions and adverse reactions of the herb but sounds more like a standard phrase,"Precautions and Adverse Reactions:No health hazards or side effects are known in conjunction with the proper administration of designated therapeutic dosages.",really No side effects?this sections is Not correct,for dosages it give some suggestions like this:"Mode of Administration:Liquid extract,in medicinal preparations and combinations.Preparation:Prepare are infusion using 2 teaspoons of drug per cup of water.A tincture is prepared by adding 20 gm of drug into 100 ml of 20% alcohol(leave to stand for 5 days).How Supplied:Capsules:450mg,Liquid Extract.Daily Dosage:Drink 1 cup of infusion every other day.Take 2 to 3 teaspoons of tincture per day."(6)

 Additional Comments:Corn is a valuable cereal; the kernels have fibrous coats that help to relieve constipation, and contain starch, protein, and an oil rich in polyunsaturated fatty acids, which lower the risk of heart disease.In Chinese medicine cornsilk is used for oedema of various origin and for hepato-biliary disease.

 The stigmas should be collected just before pollination occurs, the timing depends upon climate. It is best used fresh as some of the activity is lost with time.

 Infusion:pour a cup of boiling water onto 2 teaspoonfuls of the dried herb and leave to infuse for 10-15 minutes. This should be drunk three times a day.

Stigmata Maidis,Corn Silk:Toxicity

 The herbal classics CHMM(Chinese Herbal Materia Medica) noted the toxicity of the herb Corn Silk(Yu Mi Xu) is very low,its LD(Lethal Dose) for rabbit is about 250mg/kg(I.V.,intravenous injection),its effective dosage for diuresis is about 1.5mg/kg,so its safe application scope is big enough,at this dosage it almost show No actions for heart,blood pressure,breath,peripheral vessel,myenteron.(4)


 1: Corn Silk and Its Fascinating Uses.
 2: see CCHM(Quan Guo Zhong Cao Yao Hui Bian,or Compilation of Chinese Herbal Medicine)
 3: see DCTM(Dictionary of the Chinese Traditional Medicine),ISBN:9787532382712,by Shanghai Science and Technology Press.
 4: see CHMM(Zhong Hua Ben Cao,or Chinese Herbal Materia Medica)
 5: see The American Pharmaceutical Association Practical Guide to Natural Medicines,1st Ed,under title "Corn Silk",p203~204.
 6: see PDR for Herbal Medicines 4th Ed.under title "Corn Silk(Zea mays)",p231.

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