Herb

Ma Bian Cao

Verbena | 马鞭草

Also known as:

Verbena

Ma Bian Cao

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Properties

Blood-invigorating and stasis-dispelling herbs (活血化瘀药) · Cool

Traditionally supports*

Menstrual Health Liver Health Urinary Health Infection Support

Parts Used

Whole plant / Aerial parts (全草 quán cǎo)

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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About This Herb

Traditional Chinese Medicine background and properties

Herb Description

Ma Bian Cao (Verbena) is a versatile herb used in Chinese medicine primarily for improving blood circulation, reducing swelling, and fighting infections. It is especially valued for addressing painful or absent menstrual periods, water retention, liver conditions with jaundice, and historically for malaria. Pregnant women should avoid this herb, as it stimulates uterine contractions.

Herb Category

Blood-invigorating and stasis-dispelling herbs (活血化瘀药) Herbs that clear Heat and resolve Toxicity (清热解毒药)

Main Actions

  • Invigorates Blood and Dispels Stasis
  • Clears Heat and Resolves Toxicity
  • Promotes Urination and Reduces Edema
  • Checks Malaria
  • Promotes Menstruation

How These Actions Work

'Activates Blood and dispels stasis' means Ma Bian Cao helps get stagnant Blood moving again. It enters the Liver channel's Blood level, where it breaks up old, stuck Blood. This is why it is commonly used for painful or absent periods caused by Blood stasis, abdominal masses, and traumatic injuries with bruising and swelling.

'Clears Heat and resolves toxins' refers to the herb's ability to cool down inflammatory and infectious conditions. Because it is cool in nature and bitter in taste, it can drain Heat from the body. In practice, this is applied to sore, swollen throats, gum inflammation, skin abscesses, and acute infections like dysentery and diphtheria.

'Promotes urination and reduces edema' means the herb helps the body expel excess fluid. It is used when fluid accumulates as visible swelling, particularly in the limbs or abdomen. Historically it has been combined with other herbs to treat ascites from advanced liver disease, edema, and painful urinary conditions with heat signs.

'Interrupts malaria' is a distinctive action of this herb. In Chinese medicine, Ma Bian Cao has a well-documented ability to control the alternating chills and fever of malaria and was historically used as a single-herb treatment for this disease, whether the case was new or long-standing.

'Unblocks the menses' means it specifically addresses blocked menstrual flow. When Blood stasis prevents normal menstruation, Ma Bian Cao's bitter, cool nature helps break through the blockage and restore flow. This is closely related to its Blood-activating property but highlights its particular use in gynecological conditions.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Ma Bian Cao is traditionally associated with these specific patterns.

The following describes this herb's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.

Why Ma Bian Cao addresses this pattern

Ma Bian Cao enters the Liver channel's Blood level and is bitter and cool in nature. Its bitter taste drives a downward, dispersing movement that breaks up congealed Blood, while its cool temperature is particularly effective when Blood stasis is caused or worsened by Heat drying and thickening the Blood. The classical text Ben Cao Jing Shu describes it as a herb that 'cools Blood and breaks Blood.' This makes it well suited for Blood stasis patterns that manifest with menstrual blockage, abdominal masses, or traumatic swelling.

A practitioner would look for one or more of these signs

Amenorrhea

Absent periods due to Blood stasis

Amenorrhea

Painful periods with dark, clotted menstrual blood

Abdominal Masses

Fixed abdominal masses with pain

TCM Properties

Temperature

Cool

Taste

Bitter (苦 kǔ)

Channels Entered
Liver Spleen
Parts Used

Whole plant / Aerial parts (全草 quán cǎo)

This is partial information on the herb's TCM properties. More detailed information is available on the herb's dedicated page

Product Details

Manufacturing, supplier, and product specifications

Product Type

Granules

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Botanical & Sourcing

Quality Indicators

Good quality dried Ma Bian Cao should be green to grey-green in color (青绿色), with intact flower spikes still attached. The stems should be square-shaped, firm, and brittle, snapping cleanly with a fibrous cross-section showing white pith or a hollow center. The leaves, though often wrinkled and somewhat fragmented in the dried form, should retain their green-brown color. Complete leaves, when flattened, reveal their characteristic ovate shape with pinnate deep lobing. The flower spikes should show tightly arranged small yellowish-brown flowers or mature fruit clusters. The aroma is faint, and the taste is mildly bitter. Avoid material that is excessively brown, musty, or has lost all green coloration, as this indicates poor drying or old stock. Material free of roots and other plant debris is preferred.

Primary Growing Regions

Widely distributed throughout China, growing wild in most provinces. The primary producing regions are Hubei, Jiangsu, Guangxi, and Guizhou provinces. Additional production comes from Anhui, Zhejiang, Hunan, Jiangxi, Fujian, Hebei, and Sichuan. The plant also extends across the central-south and southwest regions, as well as Shaanxi, Gansu, and Xinjiang. Ma Bian Cao is not traditionally associated with a single prestigious terroir region, as it grows readily in open wastelands, roadsides, riverbanks, and field margins across a wide geographic range. Originally native to Europe, it is now naturalized throughout temperate and subtropical zones worldwide.

Harvesting Season

Summer, June to August, when the flowers are in full bloom. The above-ground parts are cut, cleaned of soil and debris, and sun-dried.

Supplier Information

Treasure of the East

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Miscellaneous Info

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Usage & Safety

How to use this herb and important safety information

Important Medical Disclaimer

The information provided here is for educational purposes only and is not intended as medical advice or to replace consultation with a qualified healthcare professional. This herb is a dietary supplement and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease.

Always consult with a qualified healthcare provider, particularly if you are pregnant, nursing, have a medical condition, or are taking other medications. Discontinue use and consult your healthcare provider if you experience any adverse reactions.

Recommended Dosage

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Instructions for safe storage and consumption

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Traditional Dosage Reference

Standard

15-30g (dried herb in decoction); 30-60g for fresh herb

Maximum

Up to 30g dried herb (approximately 1 liang) in standard decoction; fresh herb up to 60g. Higher doses have been used in specific clinical contexts such as treating malaria or hepatitis (up to 60-150g fresh herb concentrated into a decoction), but only under practitioner supervision.

Notes

The standard Materia Medica textbook range is 15-30g for dried herb and 30-60g for fresh herb. Some sources (notably the Quan Guo Zhong Cao Yao Hui Bian) list a lower standard range of 4.5-9g for milder conditions. For treating malaria, traditional practice uses higher doses: fresh herb 60-150g (or dried herb reduced by half), concentrated by decoction, taken in divided doses before the expected malarial episode. For hepatitis treatment, similar higher doses have been used clinically. For external use (washing wounds, eczema, hemorrhoids), larger amounts of fresh herb (up to 90g) may be decocted in water for topical washing. Clinical observation suggests that at doses below 30g, long-term use produces no significant adverse effects.

Processing Methods

Processing method

The raw herb is cleaned of residual roots and impurities, washed, briefly moistened, then cut into short segments and sun-dried.

How it changes properties

This is the standard preparation for decoction use rather than a true processing transformation. It does not significantly change the herb's cool temperature or bitter taste, but cutting into uniform segments improves extraction efficiency during decoction and makes dosing more consistent.

When to use this form

This is the standard dispensary form used in virtually all clinical applications. Fresh whole herb (鲜品) is preferred when available for conditions like sore throat (juice extracted and swallowed) or malaria (where fresh herb is considered more effective than dried).

Toxicity Classification

Slightly toxic

The whole plant is classified as slightly toxic (小毒) in Chinese botanical toxicology databases. Its overall toxicity is very low. At standard decoction dosages (15-30g dried herb), most people experience no adverse effects. Some individuals may develop mild gastrointestinal reactions including nausea, dizziness, headache, vomiting, or abdominal pain, which are generally self-limiting. The main active glycoside verbenalin, at very high doses, has been reported to have parasympathomimetic effects and can stimulate the nervous system. Extremely high doses of verbenalin may theoretically cause stupor and convulsions, though this is not a realistic concern at medicinal dosages. The herb does not cause hemolysis. Proper dosage control is sufficient to ensure safe use.

Contraindications

Avoid

Pregnancy: Ma Bian Cao has demonstrated excitatory effects on uterine smooth muscle in both animal and human tissue studies. It actively moves Blood and unblocks the menses, which may stimulate uterine contractions and increase the risk of miscarriage.

Avoid

Excessive menstrual bleeding (menorrhagia): As Ma Bian Cao is a Blood-moving herb that unblocks the menses, it should not be used when there is already heavy or prolonged menstrual flow.

Caution

Spleen Yin deficiency with Stomach Qi weakness: The Ben Cao Jing Shu warns that even when a patient has damp-heat or Blood-heat patterns, if Spleen Yin is depleted and Stomach Qi is weak, this herb should not be used, as its bitter and cold nature will further injure the digestive system.

Caution

Blood deficiency without stasis: Ma Bian Cao moves Blood and clears Heat. In patients whose primary issue is Blood deficiency rather than Blood stasis, this herb may further deplete Blood and worsen the condition.

Caution

Chronic sores or wounds in patients with underlying deficiency: The Ben Cao Cong Xin cautions that for long-standing sores in constitutionally weak patients, this herb should be used judiciously, as its clearing and dispersing actions may undermine recovery.

Caution

Spleen and Stomach deficiency cold: Ma Bian Cao is cool in nature and bitter in flavor. Patients with cold-type digestive weakness may experience worsened diarrhea, abdominal pain, or poor appetite.

Special Populations

Pregnancy

Contraindicated. Ma Bian Cao has demonstrated excitatory effects on uterine smooth muscle in laboratory studies on both rat uterine tissue and human uterine muscle strips. The herb is classified in the Blood-moving (活血) category and has a traditional primary indication of unblocking the menses (通经), meaning it actively promotes menstrual flow. These properties create a clear risk of stimulating uterine contractions, which could lead to threatened miscarriage, premature labor, or increased bleeding. Both classical and modern Chinese Materia Medica texts consistently caution or prohibit its use during pregnancy (孕妇慎服/忌用). This herb should be strictly avoided throughout all stages of pregnancy.

Breastfeeding

Caution is advised. Pharmacological studies have shown that verbenalin (the main iridoid glycoside in Ma Bian Cao) has a persistent galactagogue effect, meaning it promotes milk secretion in mammals. While this might seem beneficial, the herb's slightly toxic classification and its Blood-moving, cool nature mean that active compounds could potentially transfer into breast milk. The effects on nursing infants have not been adequately studied. Breastfeeding mothers should consult a qualified practitioner before use and should not self-medicate with this herb.

Pediatric Use

Dosage should be reduced proportionally based on age and body weight. As a general guideline from traditional clinical practice: children aged 1-10 years may use approximately one-third of the adult dose, and children aged 11-15 years may use approximately two-thirds of the adult dose. The herb's slightly toxic classification and cool nature warrant extra caution in young children, whose digestive systems are more sensitive. Use should be short-term and under practitioner supervision. Not generally suitable for infants.

Drug Interactions

Anticoagulant and antiplatelet medications: Ma Bian Cao has Blood-invigorating (活血) properties. Although verbenalin has shown some procoagulant effects in isolated studies, the herb's overall clinical action of moving Blood and dispersing stasis suggests it could theoretically interact with anticoagulants (e.g. warfarin, heparin) or antiplatelet drugs (e.g. aspirin, clopidogrel). Concurrent use should be monitored by a healthcare professional.

Uterine stimulant drugs: Given the demonstrated excitatory effect of Ma Bian Cao on uterine smooth muscle, concurrent use with oxytocin or other uterotonic agents could produce additive effects and should be avoided.

Antiepileptic and sedative medications: Preclinical studies have shown that V. officinalis extracts possess anticonvulsant and sedative properties, potentially involving benzodiazepine and opioid receptor pathways. Concurrent use with benzodiazepines, barbiturates, or other CNS depressants could theoretically produce additive sedation.

Iron supplements: As a tannin-containing herb, Ma Bian Cao may reduce the absorption of oral iron supplements if taken simultaneously. Stagger administration by at least 2 hours.

Dietary Advice

Because Ma Bian Cao is cool in nature with bitter flavor, it is best to avoid excessive consumption of cold, raw, or icy foods while taking it, especially for individuals with a tendency toward digestive weakness. This helps prevent further chilling the Spleen and Stomach. Alcohol may be used as a vehicle in small amounts, as classical sources describe taking Ma Bian Cao syrup with wine to enhance its Blood-moving effects. Avoid greasy, heavy, or difficult-to-digest foods when using this herb for damp-heat or edema conditions.

Cautions & Warnings

Although this formula is typically safe for most individuals, it may cause side effects in some people. Pregnant women, nursing mothers, postpartum women, and those with liver disease should use the formula with caution.

As with any Chinese herbal remedy, it is advisable to seek guidance from a qualified TCM practitioner before beginning treatment.