Equisetum, Horsetail, Mu Zei 木贼

Hippuris, Ephedron, Anabasis
Mu Zei (TCM)
Khu byug rtsa ljang  ཁུ་བྱུག་རྩ་ལྗང་ (Tibet)
Picture Picture
Picture Two varieties of Horsetail
Dioscorides Materia Medica, Mathias, 1563

Picture Picture
Greater Horsetail, the right showing a spindle of wound Horsetail for selling.
Krauterbuch, Lonitzer, 1578

Picture Picture
Picture Picture
4 different varieties of Horsetail
New Kreuterbuch, Matthiolus, 1563

Picture E. arvensis
Flora von Deutschland
(4), Kohler, 1884

Botanical name:


Equisetum arvense
Also used are E. maximum, E. fluviatile, E. sylvaticum, E. palustre, E. limosum, and E. hyemale, the last being also used in TCM

Parts used:


Herb

Temperature & Taste:


Cool, dry. Salty, sweet.
It is Cold in the First degree and Dry in the Second degree”. (Avicenna)

Classifications:


2N. REPELLENTS.    2O. ASTRINGENTS.    2S. STRENGTHENING.    2T. GLUTINATE.    2Z. CICATRIZING
TCM:
A. Clear Exterior Wind-Heat

Uses:


1. Clears Heat and Damp, Promotes Urine: (West, Tibet)
-hot, burning Urine; Strangury, Cystitis, Urethritis, Bladder Ulcers
-Acute Prostatitis (BHP specific)
-Gravel, Stones
-Leukorrhea, Vaginitis, Gonorrhea

2. Clears Heat, Stops Bleeding:
(West, Tibet, TCM)
-Spitting or Vomiting Blood, or Blood in the Stool or Urine
-applied externally to stop Bleeding
-“
it is very useful in cases of Bleeding”. (Avicenna)

3. Astringes to Stop Leakage: (West)
-Seminal Emission, Spermatorrhea, Incontinence
-constant desire to Urinate in the Elderly
-Enuresis and Incontinence of Children (BHP specific)
-Excessive Sweating
-“It is astringent specially its extract is extremely desiccant without causing any irritation”. (Avicenna)


4. Benefits the Bones and Sinews: (West)
-Lower Back weakness
-Arthritis, Rheumatism, Osteoarthritis
-Fractures

5. Clears Heat, Benefits the Eyes:
(TCM)
-red, itchy, bloodshot Eyes
-tearing, Cataracts, Conjunctivitis

6. Clears Heat, Benefits the Lungs: (West)
-dry Cough, Wheezing, shortness of Breath, Hemoptysis
-Lung Ulcers, Tuberculosis, Silicosis

7. Clears Stomach Heat:
-ashes have been used for Indigestion and Stomach acidity
-“
useful in inflammations of the Stomach and Liver”. (Avicenna)

8. Clears Damp, Resolves Masses:
-Tumors and Cancers of the Abdomen, Intestines, Bones, Liver, Kidney, Stomach and Breast (Duke)


9. Externally:
-good for Wounds, Ulcers, skin Eruptions, as well as Mouth Ulcers etc.
-especially for all poorly healing wounds. ‘Outwardly applied, it cures wounds even when the nerves are cut’. (Pechy)
-The juice or distilled water can be applied to Pustules, and heat-type Swellings of the Genitals in men or women.
-A wash or compress is a valuable application to all types of sores with foul-smelling pus.
-Topically, a strong decoction is used to promote Hair growth, prevent Baldness, and remove Dandruff.
-In Europe it has long been used in baths for various skin diseases


Dose:


In the West, the Juice was regarded as strongest, then the Decoction, lastly the Tincture.
Decoction: 3–9 grams, up to 12 grams
Powder: 500mg–2 grams (up to 4 grams)
Freshly expressed Juice: 10–30mls, taken in water
Tincture (1:5 dried in 25% alcohol): 2–5 mls.
Fluid Extract (1:1): 1–3 mls.
Ashes of Horsetail: 3–10 grains
Distilled Water: 2–3 spoonfuls

Main Combinations:


1. Edema:
i. Horsetail with Juniper berry, Nettle, Rosemary
ii. Horsetail, Nettle, Fennel seed, Celery seed
iii. Corn Silk, Hawthorn berry, Birch leaf, Strawberry leaf, Horsetail, German Camomile. (this was found to be an effective diuretic: see here)
2. Urinary disorders, difficulty or painful Urination:
i. Horsetail with Yarrow, Cleavers and Couch Grass
ii. Horsetail with Birch, Nettle, Couch grass and Juniper
iii. Difficult Urination, Horsetail with Juniper berry, Parsley seed, Restharrow, Rosehip
3. Gravel, Stones, Horsetail with Knotgrass, Shepherds Purse, Agrimony, Camomile (as in Decoction for Stones)
4. Incontinence, Horsetail with Comfrey, Cyperus rotundus, Plantain, Rue, Agnus Castus, Frankincense (as in Wine for Incontinence)
5. Prostatitis:
i. Horsetail with Willow bark (Ellingwood)
ii. Horsetail with Cleavers, Corn Silk, Kelp, Saw Palmetto (Wonders in Weeds, W. Smith)
6. Ulcers of the Kidney or Bladder, Horsetail with Quince, Sumach, Myrtle berries, Rose and Pomegranate flowers (as in Decoction of Horsetail)
7. ‘Hurts of the Bowels and of the Bladder’, 4 oz. of the juice of Horsetail with a little Endive juice, or the distilled water of the herb. (The Secrets of Alexis, 1615)
8. Arthritis, Rheumatism, Sciatica, Lumbago, Fractures, Horsetail has been combined with Comfrey
9. Chronic catarrhs of the respiratory and urinary organs, Horsetail with Chickweed, Lance-leaf Plantain, Nettle (Fischer)
10. Trauma to the Tendons or Joints, Horsetail with Nettle and St. Johns wort
11. Internal Wounds and Bleeding, Horsetail with Adder’s Tongue
12. Rheumatic pain, Horsetail with Elder flower, Nettle, Dandelion, Birch leaf
13. Consumption, take Horsetail powder with Plantain water.
14. Excess Sweating, Horsetail with Sage
15. Leukorrhea, Horsetail with Ladies Mantle and Dead Nettle (Müller)
16. As a wash for Acne, combine Horsetail with Sage, Camomile and Thyme
17. As a wash for Rashes, combine Horsetail with Camomile, Thyme and Mallow
18. As a wash for Varicose veins, Horsetail with Rosemary, Yarrow, Horse Chestnut
19. As a wash for ‘griefs’, irritations and swellings of the penis, soak a cloth in Horsetail water and apply regularly. (The Secrets of Alexis, 1615)
20. Dandruff, Make a wash of Nettle, Horsetail and Rosemary

Major Formulas


Infusion for Hernia (Wirtzung)
Decoction for Stones
Wine for Incontinence

Cautions:


1. Not used during Pregnancy
2. Not for frequent Urination or Dryness
3. Toxic in large doses or long-term use
4. Contraindicated in Cardiac or Renal failure.

Toxicity:


Equisetum arvense (Field Horsetail)-induced liver injury.
Study of acute hepatotoxicity of Equisetum arvense L. in rats.

Main Preparations used:


Distilled Water

Pliny on Horsetail:
Equisaetum, a plant called ” hippuris” by the Greeks, and which we have mentioned in terms of condemnation, when treating of meadow lands— it being, in fact, a sort of hair of the earth, similar in appearance to horse-hair— is used by runners for the purpose of diminishing the spleen. For this purpose it is boiled down in a new earthen vessel to one third, the vessel being filled to the brim, and the decoction taken in doses of one hemina for three successive days. It is strictly forbidden, however, to eat any food of a greasy nature the day before taking it.
 
‘Among the Greeks there are various opinions in relation to this plant. According to some, who give it the same name of “hippuris,” it has leaves like those of the pine tree, and of a swarthy hue; and, if we are to believe them, it is possessed of virtues of such a marvellous nature, that if touched by the patient only, it will arrest haemorrhage. Some authorities call it “hippuris,” others, again, “ephedron,” and others “anabasis;” and they tell us that it grows near trees, the trunks of which it ascends, and hangs down there from in numerous tufts of black,
rush-like hair, much 
like a horse’s tail in appearance. The branches, we are told, are thin and articulated, and the leaves, few in number, small, and thin, the seed round, and similar to coriander in appearance, and the root ligneous: it grows, they say, in plantations more particularly.
 
‘This plant is possessed of astringent properties. The juice of it, kept in the nostrils, arrests bleeding therefrom, and it acts astringently upon the bowels. Taken in doses of three cyathi, in sweet wine, it is a cure for dysentery, is an efficient diuretic, and is curative of cough, hardness of breathing, ruptures, and serpiginous affections. For diseases of the intestines and bladder, the leaves are taken in drink; ithas the property, also, of reducing ruptures of the groin.

 
‘The Greek writers describe another hippuris, also, with
shorter tufts, softer and whiter. This last, they say, is remarkably good for sciatica, and, applied with vinegar, for wounds, it having the property of stanching the blood.’ (The Natural History of Pliny, trans. by Bostock and Riley, Vol. 5, 1856)
GENERAL / REVIEW
Isolation of a wide range of minerals from a thermally treated plant: Equisetum arvense, a Mare’s tale.

ANTIBACTERIAL
Equisetum arvense L. Extract Induces Antibacterial Activity and Modulates Oxidative Stress, Inflammation, and Apoptosis in Endothelial Vascular Cells Exposed to Hyperosmotic Stress.
Composition and antimicrobial activity of Equisetum arvense L. essential oil.

ANTIFUNGAL
Equisetum arvense hydro-alcoholic extract: phenolic composition and antifungal and antimycotoxigenic effect against Aspergillus flavus and Fusarium verticillioides in stored maize.

ANTI-INFLAMMATORY
Anti-inflammatory effect of glycyrrhizin with Equisetum arvense extract.
Anti-inflammatory actions of herbal medicines in a model of chronic obstructive pulmonary disease induced by cigarette smoke.
Equisetum arvense L. Extract Induces Antibacterial Activity and Modulates Oxidative Stress, Inflammation, and Apoptosis in Endothelial Vascular Cells Exposed to Hyperosmotic Stress.
In Vitro Anti-inflammatory Effects of Equisetum arvense Are Not Solely Mediated by Silica.
Equisetum arvense (common horsetail) modulates the function of inflammatory immunocompetent cells.
Antinociceptive and anti-inflammatory properties of the hydroalcoholic extract of stems from Equisetum arvense L. in mice.

ANTIOXIDANT
Structural, rheological and antioxidant properties of pectins from Equisetum arvense L. and Equisetum sylvaticum L.
Equisetum arvense L. Extract Induces Antibacterial Activity and Modulates Oxidative Stress, Inflammation, and Apoptosis in Endothelial Vascular Cells Exposed to Hyperosmotic Stress.
Antioxidative and antiproliferative activities of different horsetail (Equisetum arvense L.) extracts.
Exploring Equisetum arvense L., Equisetum ramosissimum L. and Equisetum telmateia L. as sources of natural antioxidants.
Phenolic compounds in field horsetail (Equisetum arvense L.) as natural antioxidants.

HEPATOPROTECTIVE
Hepatoprotective and free radical scavenging activities of phenolic petrosins and flavonoids isolated from Equisetum arvense.

COGNITIVE ENHANCEMENT
Cognitive enhancement in aged rats after chronic administration of Equisetum arvense L. with demonstrated antioxidant properties in vitro.

ANXIETY
Anxiolytic effects of Equisetum arvense Linn. extracts in mice.

SEDATIVE
Sedative and anticonvulsant effects of hydroalcoholic extract of Equisetum arvense.
ANTIHYPERTENSIVE
Antihypertensive effect of Equisetum arvense L.: a double-blind, randomized efficacy and safety clinical trial.

COPD
Anti-inflammatory actions of herbal medicines in a model of chronic obstructive pulmonary disease induced by cigarette smoke.

DIURETIC
Randomized, Double-Blind Clinical Trial to Assess the Acute Diuretic Effect of Equisetum arvense (Field Horsetail) in Healthy Volunteers.

URINARY CALCULI
[Antiurolithiasic effect of a plant mixture of Herniaria glabra, Agropyron repens, Equisetum arvense and Sambucus nigra (Herbensurina®) in the prevention of experimentally induced nephrolithiasis in rats].
Urolithiasis and phytotherapy.

DIABETES
SIRT1 Activation by Equisetum Arvense L. (Horsetail) Modulates Insulin Sensitivity in Streptozotocin Induced Diabetic Rats.
Protective effects of Equisetum arvense methanolic extract on sperm characteristics and in vitro fertilization potential in experimental diabetic mice: An experimental study.
The effect of Equisetum arvense L. (Equisetaceae) in histological changes of pancreatic beta-cells in streptozotocin-induced diabetic in rats.
Antidiabetic effect of Equisetum arvense L. (Equisetaceae) in streptozotocin-induced diabetes in male rats.

BONE GROWTH
Equisetum arvense hydromethanolic extracts in bone tissue regeneration: in vitro osteoblastic modulation and antibacterial activity.

BONE DENSITY
Effect of equisetum arvense extract on bone mineral density in Wistar rats via digital radiography.
Anabolic therapy with Equisetum arvense along with bone mineralising nutrients in ovariectomized rat model of osteoporosis.

ARTHRITIS
Phytomedicine in Joint Disorders.

CANCER
Anticancer activity of EA1 extracted from Equisetum arvense.
UHPLC-MS/MS-GNPS based phytochemical investigation of Equisetum arvense L. And evaluation of cytotoxicity against human melanoma and ovarian cancer cells.
Impact of ethanolic extract of Equisetum arvense (EA1) on pancreatic carcinoma AsPC-1 cells.

WOUND HEALING
[Antiurolithiasic effect of a plant mixture of Herniaria glabra, Agropyron repens, Equisetum arvense and Sambucus nigra (Herbensurina®) in the prevention of experimentally induced nephrolithiasis in rats].
Effects of Equisetum arvense Ointment on Diabetic Wound Healing in Rats.