Herb Leaf (叶 yè)

Luo Bu Ma

Dogbane leaf · 罗布麻

Apocynum venetum L. · Folium Apocyni Veneti

Also known as: 野茶 (Yě Chá)

Luo Bu Ma (Dogbane leaf) plant

Images shown are for educational purposes only

Dogbane leaf is a cooling herb best known for its natural blood pressure-lowering properties. It calms the Liver, eases dizziness and headaches related to stress or high blood pressure, and promotes better sleep. It also has a mild water-draining effect that helps reduce puffiness and fluid retention.

Category Liver-calming and Wind-extinguishing herbs (平肝息风药) Liver Yang-subduing herbs (平抑肝阳药)
Therapeutic focus Blood Pressure Support Sleep Support Cardiovascular Health Fluid Balance

TCM Properties

Temperature

Cool

Taste

Sweet (甘 gān), Bitter (苦 kǔ)

Channels entered

Liver

Parts used

Leaf (叶 yè)

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Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Herb Does

Every herb has a specific set of actions — here's what Luo Bu Ma does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Luo Bu Ma is primarily used to support these areas of health:

Blood Pressure Support Sleep Support Cardiovascular Health Fluid Balance

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Luo Bu Ma performs to restore balance in the body:

Calms the Liver and Subdues Yang Calms the Spirit Clears Heat Promotes Urination and Reduces Edema

How these actions work

'Calms the Liver and subdues Yang' (平肝潜阳) means this herb settles excessive upward-rising activity of the Liver. When the Liver's Yang becomes overactive, it surges upward and causes headaches, dizziness, irritability, and a flushed face. Luo Bu Ma Ye, being cool and entering the Liver channel, gently clears Liver Heat and anchors the Yang back down. This is the herb's primary action and the main reason it is widely used for blood pressure management.

'Calms the spirit' (安神) means this herb helps settle restlessness and promote sleep. When Liver Heat or rising Liver Yang disturbs the Heart-spirit, a person may experience palpitations, anxiety, and insomnia. Luo Bu Ma Ye clears the Heat that agitates the spirit, producing a gentle calming effect. It is commonly used for people whose insomnia and anxiety stem from stress or emotional tension.

'Clears Heat' and 'Promotes urination and reduces edema' (清热利水) describe the herb's ability to drain Heat and encourage fluid passage through urination. The bitter taste directs fluids downward, and the cool temperature clears pathological Heat. This makes Luo Bu Ma Ye helpful for facial or limb swelling with scanty urine, especially in nephritis-related edema.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Luo Bu Ma is used to help correct these specific patterns.

Why Luo Bu Ma addresses this pattern

Luo Bu Ma Ye is cool in temperature, sweet and bitter in taste, and enters the Liver channel, making it ideally suited for Liver Yang Rising. In this pattern, the Liver's Yang flares upward due to insufficient Yin anchoring it. The cool nature directly clears the Heat component that often drives Yang upward, while the bitter taste has a natural descending quality that redirects the excessive upward surge. The sweet taste gently supports without cloying. This herb's primary clinical reputation rests on this pattern, and it is the main reason Luo Bu Ma Ye is so closely associated with hypertension management in modern Chinese medicine.

A practitioner would look for one or more of these signs

Dizziness

Head feels heavy and distended, worsened by stress or sudden position changes

Headaches

Throbbing headache at the temples or vertex, aggravated by emotional upset

Tinnitus

Ringing in the ears accompanying dizziness

Irritability

Easy frustration and emotional volatility

High Blood Pressure

Elevated blood pressure with a flushed face

Commonly Used For

These are conditions where Luo Bu Ma is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Liver Yang Rising Liver Fire Blazing

TCM Interpretation

In TCM, most cases of high blood pressure relate to the Liver. The Liver governs the smooth flow of Qi throughout the body. When the Liver becomes overheated from chronic stress, emotional suppression, or underlying Yin Deficiency, its Yang rises unchecked. This upward surging creates pressure in the upper body, manifesting as headaches, dizziness, a red face, and irritability. Over time, the Kidney Yin that normally anchors the Liver becomes depleted, making the rising Yang progressively harder to control. The condition reflects an imbalance between upper and lower: too much rising activity above, too little grounding support below.

Why Luo Bu Ma Helps

Luo Bu Ma Ye directly targets the Liver channel with its cool temperature and bitter-sweet taste. The cool nature counteracts the Heat driving Yang upward, while the bitter taste has a descending quality that redirects the excessive upward movement. Clinical reports documented that in 596 hypertension cases treated with Luo Bu Ma Ye, the overall effective rate reached approximately 89%, with clear improvements in headache, dizziness, and insomnia. Modern pharmacological research has confirmed that the leaf extract promotes nitric oxide release and scavenges superoxide anions in blood vessels, which may explain its pressure-lowering mechanism. As a gentle herb, it is best suited for mild to moderate hypertension or as an adjunct to stronger treatments.

Also commonly used for

Dizziness

Vertigo and lightheadedness associated with hypertension

Edema

Fluid retention with reduced urination, including nephritis-related edema

Palpitations

Heart pounding due to emotional stress or Liver-Heart disharmony

Anxiety

Nervousness and restlessness with underlying Heat signs

Headaches

Tension or throbbing headache related to high blood pressure

Neurasthenia

Chronic fatigue with poor sleep, dizziness, and poor concentration

Depression

Mild depression with irritability and emotional constraint

High Cholesterol

Dyslipidemia, particularly when combined with hypertension

Herb Properties

Every herb has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Cool

Taste

Sweet (甘 gān), Bitter (苦 kǔ)

Channels Entered

Liver

Parts Used

Leaf (叶 yè)

Dosage & Preparation

These are general dosage guidelines for Luo Bu Ma — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

3-15g (leaf); up to 15-16g (root, for cardiac conditions)

Maximum dosage

Leaf: up to 15g per day in decoction. Root: up to 16g (5 qian) per day for short-term treatment of congestive heart failure under close clinical supervision. Do not exceed these doses due to risk of cardiac toxicity.

Dosage notes

For mild hypertension or insomnia, the leaf is typically used at 3-6g daily, brewed as a tea infusion with boiling water. For decoction in more pronounced cases of Liver Yang rising with headache and dizziness, 6-12g of the leaf is standard. The root is primarily used for its stronger cardiac and diuretic effects (edema, congestive heart failure) at 12-16g in decoction. The leaf is preferred for calming the Liver and settling the spirit; the root for promoting urination and strengthening the heart. Longer treatment courses (months rather than weeks) appear to improve efficacy for hypertension, but prolonged use requires monitoring for potassium depletion and cardiac effects.

Preparation

No special decoction handling required for the leaf. The leaf can be decocted normally or simply steeped in boiling water as a tea substitute. For the root, it is recommended to soak in water for several hours (up to 12 hours) before simmering slowly for about one hour to fully extract the active cardiac glycoside components.

Common Herb Pairs

These ingredients are traditionally combined with Luo Bu Ma for enhanced therapeutic effect

Tian Ma
Tian Ma 1:1 (Luo Bu Ma Ye 10g : Tian Ma 10g)

Both herbs calm the Liver and subdue Yang through complementary mechanisms. Luo Bu Ma Ye clears Liver Heat with its cool nature, while Tian Ma (sweet and neutral) extinguishes Liver Wind and opens the channels. Together they powerfully subdue rising Liver Yang and address Wind symptoms like numbness and tremor that may accompany hypertension.

When to use: Liver Yang transforming into Wind, presenting as dizziness, headache, limb numbness, or tremor alongside high blood pressure.

Suan Zao Ren
Suan Zao Ren 1:2 (Luo Bu Ma Ye 6g : Suan Zao Ren 12-15g)

Luo Bu Ma Ye clears Liver Heat and calms the spirit from the excess side, while Suan Zao Ren nourishes Heart Yin and Liver Blood to calm the spirit from the deficiency side. Together they address insomnia by both clearing the Heat that agitates and nourishing the Blood that anchors the spirit.

When to use: Insomnia with palpitations due to Blood Deficiency complicated by Liver Heat. The person cannot fall asleep, feels anxious, and may have night sweats.

Gou Teng
Gou Teng 1:1 (Luo Bu Ma Ye 6g : Gou Teng 6-10g)

Both herbs enter the Liver channel and subdue Yang. Gou Teng is effective at clearing Liver Heat and extinguishing Wind, while Luo Bu Ma Ye contributes a calming-spirit action. The pair strengthens the overall Liver Yang-subduing effect, making it well suited for hypertension with headache and dizziness.

When to use: Liver Yang Rising with marked headache, dizziness, red eyes, and irritability in hypertensive patients.

Ju Hua
Ju Hua 1:1 (Luo Bu Ma Ye 6g : Ju Hua 6g)

Both herbs clear Liver Heat and calm Liver Yang. Ju Hua additionally disperses Wind-Heat and brightens the eyes. Combined, they provide a gentle yet effective approach to Liver Yang Rising that is well suited for use as a daily wellness tea.

When to use: Mild hypertension with headache, blurry vision, and eye strain. Often used as a daily preventive tea for people prone to high blood pressure.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Ju Hua
Luo Bu Ma vs Ju Hua

Both calm Liver Yang and clear Liver Heat. However, Luo Bu Ma Ye has a stronger spirit-calming action and diuretic effect, making it better for insomnia and edema alongside hypertension. Ju Hua excels at treating eye problems (blurry vision, red dry eyes) and can also disperse external Wind-Heat, which Luo Bu Ma Ye cannot do.

Tian Ma
Luo Bu Ma vs Tian Ma

Both subdue Liver Yang and treat dizziness and headache. Tian Ma is neutral to slightly warm and excels at extinguishing Liver Wind (tremor, spasms, numbness), while Luo Bu Ma Ye is cool and better at clearing Liver Heat, calming the spirit, and promoting urination. Choose Tian Ma when Wind symptoms like tremor dominate; choose Luo Bu Ma Ye when Heat signs and insomnia are prominent.

Xia Ku Cao
Luo Bu Ma vs Xia Ku Cao

Both are cool herbs that clear Liver Heat and help lower blood pressure. Xia Ku Cao is colder and more powerfully clears Liver Fire, also addressing nodules and goitre through its ability to soften hardness and dissipate masses. Luo Bu Ma Ye is milder, has a better spirit-calming effect, and adds diuretic action. For intense Liver Fire with swollen glands, Xia Ku Cao is preferred. For gentle, sustained blood pressure management with sleep support, Luo Bu Ma Ye is the better choice.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Luo Bu Ma

The most common confusion is between Luo Bu Ma (红麻, Apocynum venetum, "red hemp") and Da Ye Bai Ma / Bai Ma (白麻, Apocynum pictum / Poacynum hendersonii, "white hemp" or "big-leaf dogbane"). Both grow in similar habitats in Xinjiang and northwest China and are sometimes sold interchangeably. A. pictum has larger flowers (basin-shaped corolla with distinct darker markings) and broader triangular corolla lobes, while A. venetum has smaller, campanulate (bell-shaped) pink-purple flowers. Pharmacologically, the two species share some overlap in activity but differ in the relative content of active flavonoids. The small-flowered red variety (小花红麻) of A. venetum is considered the highest-grade medicinal material. Unprocessed raw leaves are sometimes fraudulently sold as processed tea-grade Luo Bu Ma; these raw leaves retain alkaline salts (appearing whitish and tasting harshly astringent) and can irritate the digestive system and kidneys with long-term use.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any herb.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Luo Bu Ma

Slightly toxic

Luo Bu Ma belongs to the Apocynaceae (dogbane) family, which includes many plants containing cardiac glycosides. The root is the most toxic part, containing cymarin-type cardiac glycosides (including apocynamarin and strophanthidin derivatives) that have digitalis-like effects on the heart. The root extract shows some cumulative toxicity in animal studies (approximately 61.7% accumulation after one day). The leaves are considerably less toxic; subchronic studies in rats show the leaf extract is safe at standard doses, and the oral LD50 in mice is 66.9 g/kg (a wide safety margin). However, at high doses the leaf flavonoid glycosides can also induce cardiac effects (heart rate slowing, ECG changes). Common side effects of overuse include gastrointestinal symptoms (nausea, vomiting, diarrhea) and cardiac symptoms (bradycardia, premature contractions). Used within standard dosage and duration guidelines, the herb is considered safe. Processed tea products undergo steps to remove alkaline and irritant components, further improving safety.

Contraindications

Situations where Luo Bu Ma should not be used or requires extra caution

Caution

Spleen-Stomach deficiency cold (脾胃虚寒) with chronic loose stools or poor appetite. Luo Bu Ma is cool in nature and can further damage weak digestive function, worsening diarrhea and stomach discomfort.

Caution

Hypotension or tendency toward low blood pressure. Luo Bu Ma has significant blood-pressure-lowering effects and may cause dizziness, fatigue, or syncope in those with already low blood pressure.

Avoid

Concurrent use of cardiac glycoside medications (digoxin, digitoxin). The root of Luo Bu Ma contains cardiac glycosides (cymarin-type compounds) with digitalis-like effects, creating a risk of additive cardiotoxicity including dangerous bradycardia and arrhythmia.

Avoid

Existing bradycardia or atrioventricular conduction block. Clinical reports document that Luo Bu Ma can cause heart rate slowing and premature contractions; it should not be used in patients with pre-existing slow heart rates.

Caution

Do not use in excessive doses or for prolonged unmonitored periods. Overuse can lead to gastrointestinal disturbance (nausea, vomiting, diarrhea) and cardiac side effects (bradycardia, arrhythmia). The root has cumulative toxicity potential.

Caution

Hypokalemia or concurrent use of potassium-depleting diuretics. Luo Bu Ma has diuretic properties that may exacerbate potassium loss, increasing the risk of cardiac complications.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Insufficient safety data exists for use during pregnancy. The herb's cardiac glycoside content (particularly in the root), significant blood-pressure-lowering effects, and diuretic properties represent potential risks for both the pregnant person and fetus. The herb has historically been used for pregnancy-related edema in some clinical reports, but this was under close medical supervision. As a general precaution, Luo Bu Ma should be avoided during pregnancy unless specifically prescribed and monitored by a qualified practitioner.

Breastfeeding

No specific safety data is available for breastfeeding. Given the presence of cardiac glycosides (particularly in the root) and other bioactive compounds that could theoretically pass into breast milk, caution is advised. The leaf at low tea-grade doses is generally considered to have a better safety profile than the root, but formal lactation safety studies have not been conducted. It is best avoided or used only under professional guidance during breastfeeding.

Children

Not commonly used in children. There is no established pediatric dosage in standard references. If used, dosage should be substantially reduced based on body weight and age, and limited to the leaf form only (not the root). Children are more sensitive to cardiac glycoside effects. Use only under the supervision of a qualified practitioner experienced with pediatric patients.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Luo Bu Ma

Cardiac glycoside medications (digoxin, digitoxin): The root contains cymarin-type cardiac glycosides with digitalis-like activity. Concurrent use could produce additive cardiotoxic effects (severe bradycardia, arrhythmias, heart block). This combination should be strictly avoided.

Antihypertensive medications: Luo Bu Ma has documented blood-pressure-lowering effects. Combined use with pharmaceutical antihypertensives (ACE inhibitors, beta-blockers, calcium channel blockers, diuretics) may result in excessive hypotension. Blood pressure should be monitored if used alongside these drugs.

Potassium-depleting diuretics (furosemide, hydrochlorothiazide): Luo Bu Ma itself has diuretic properties. Combined use may increase potassium loss, raising the risk of hypokalemia, which in turn increases sensitivity to cardiac glycoside toxicity.

CYP3A4 and P-glycoprotein substrates: A rat study (PMID: 15467212) found that Apocynum venetum extract at recommended doses did not induce CYP3A or P-glycoprotein activity, unlike St. John's Wort. This suggests a relatively low risk of pharmacokinetic interactions through these common drug metabolism pathways, though human confirmation studies are lacking.

Sedative and anxiolytic medications: Luo Bu Ma has demonstrated sedative and anxiolytic effects in both animal and human studies. Additive sedation may occur when combined with benzodiazepines, barbiturates, or other CNS depressants.

Dietary Advice

Foods and dietary considerations when taking Luo Bu Ma

Avoid excessive consumption of cold or raw foods while taking Luo Bu Ma, particularly if using it for its calming and blood-pressure-lowering effects, as cold foods may impair digestion and reduce absorption. Since the herb has diuretic properties, maintain adequate fluid intake and ensure sufficient dietary potassium (bananas, leafy greens, legumes) to offset potential potassium loss. Avoid combining with strong tea (Camellia sinensis) or coffee in excess, as caffeine may counteract the herb's calming and blood-pressure-lowering effects.

Botanical Description

Physical characteristics and morphology of the Luo Bu Ma source plant

Apocynum venetum L. (family Apocynaceae) is a perennial herbaceous plant that grows from a spreading rhizomatous rootstock. The stems are erect and branching, reaching 1 to 4 meters tall, with smooth, whitish-gray to reddish-brown bark that is finely striate. The leaves are usually opposite, narrowly elliptic to narrowly ovate (1 to 8 cm long, 0.5 to 2.2 cm wide), with finely toothed margins, green on top and slightly paler underneath. When broken, stems and leaves exude a milky white latex.

The flowers are small and bell-shaped (campanulate corolla, 6 to 8 mm), purplish-red or pink, growing in terminal clusters. Flowering occurs from April to September, with fruit maturing from July to December. The fruits are slender follicles (8 to 20 cm long) that split open when ripe to release small seeds bearing silky tufts of hair (coma) for wind dispersal. The plant thrives in sandy riverbanks, desert margins, saline-alkaline soils, and alluvial flats, and is notably salt-tolerant and drought-resistant, exploiting groundwater through deep roots.

Sourcing & Harvesting

Where Luo Bu Ma is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Leaves are harvested in summer before flowering (typically June to July). The root is dug up in late autumn. The whole herb can be collected in summer.

Primary growing regions

The highest quality Luo Bu Ma (道地药材) comes from the Xinjiang Uyghur Autonomous Region, particularly the Tarim River and Kongque (Peacock) River basins around the Lop Nor (Lop Nur/罗布泊) region. Uqturpan (Yuli/尉犁) County in Bayingolin Mongol Autonomous Prefecture is recognized as the core production area. Inner Mongolia, Gansu (especially the Dunhuang area along the Shule River), and Qinghai are also important producing regions. The plant is additionally distributed across Shaanxi, Shanxi, Hebei, Shandong, Jiangsu, Anhui, and the northeast provinces (Jilin, Liaoning), though these are generally considered secondary sources.

Quality indicators

For the leaf (the primary medicinal part): good quality leaves are intact, elliptical-lanceolate in shape, 2 to 5 cm long, pale green to gray-green in color, with fine-toothed margins that may be slightly curled inward. Both surfaces should be hairless, with leaf veins prominently raised on the underside. The texture should be brittle and crisp. The aroma is faint and the taste is bland. When brewed as tea, high-quality processed Luo Bu Ma leaf produces a golden-yellow infusion (attributed to high iron and flavonoid content), while poor quality material produces pale, unchanged water. Avoid leaves that appear whitish on the surface (indicating poor processing with residual alkaline salts), have an excessively bitter or salty-astringent taste, or show signs of mold or insect damage.

Classical Texts

Key passages from the classical Chinese medical texts that describe Luo Bu Ma and its therapeutic uses

《陕西中草药》(Shaanxi Chinese Herbal Medicine):
"味淡涩，性凉，有小毒。清凉泻火，强心利尿，降血压。治心脏病，高血压，神经衰弱，肾炎浮肿。"
Bland and astringent in taste, cool in nature, slightly toxic. Clears heat and drains fire, strengthens the heart and promotes urination, lowers blood pressure. Treats heart disease, high blood pressure, neurasthenia, nephritis with edema.

《中国药植图鉴》(Illustrated Guide to Chinese Medicinal Plants):
"嫩叶，蒸炒揉制后代茶，有清凉去火，防止头晕和强心的功用。"
The tender leaves, after steaming, roasting, and rolling into a tea substitute, have the functions of clearing heat, preventing dizziness, and strengthening the heart.

《江苏植药志》(Jiangsu Botanical Medicine Records):
"乳汁可愈合伤口。"
The [plant's] milky sap can heal wounds.

《新疆中草药手册》(Xinjiang Chinese Herbal Medicine Handbook):
Recorded indications for treating hepatitis with abdominal distension, neurasthenia, dizziness, sequelae of concussion, palpitations, insomnia, hypertension, liver cirrhosis ascites, and edema.

Historical Context

The history and evolution of Luo Bu Ma's use in Chinese medicine over the centuries

Luo Bu Ma (罗布麻) takes its name from the Lop Nor (罗布泊) region of Xinjiang where it grows abundantly along desert rivers. The character 麻 ("hemp/fiber") reflects its ancient use as a textile fiber. Local peoples of the Lop Nor region have used the leaves and flowers as a daily tea for centuries, and regional chronicles note that communities drinking Luo Bu Ma tea had many centenarians. The plant's fibers were woven into cloth and clothing long before its medicinal properties were formally documented.

As a medicinal herb, Luo Bu Ma is relatively recent in formal Chinese pharmacological literature compared to herbs recorded in ancient classics. Its earliest formal materia medica entry appears in modern regional herbals such as the Shaanxi Chinese Herbal Medicine (《陕西中草药》) and the Xinjiang Chinese Herbal Medicine Handbook (《新疆中草药手册》). It was officially included in the Chinese Pharmacopoeia (《中华人民共和国药典》) in 1977. From the 1960s through the 1980s, extensive Chinese clinical studies documented its effectiveness for hypertension (with reported efficacy rates around 88%), generating widespread interest. Since 2002, Luo Bu Ma tea has been included on China's official list of health-care foods. Its fibers, sometimes called the "king of wild fibers," have also gained commercial interest as a natural textile material.

Modern Research

5 published studies investigating the pharmacological effects or clinical outcomes of Luo Bu Ma

1

Comprehensive Review: Botany, Traditional Uses, Phytochemistry and Pharmacology of Apocynum venetum L. (Luobuma) (2012)

Xie W, Zhang X, Wang T, Hu J. Journal of Ethnopharmacology, 2012, 141(1):1-8

This systematic review analyzed literature in English, Chinese, and Japanese on Luo Bu Ma. It found that the herb has validated antihypertensive, cardiotonic, hepatoprotective, antioxidant, lipid-lowering, antidepressant, and anxiolytic effects, primarily attributable to its flavonoid compounds. Safety data from animal and clinical studies showed no severe side effects even with daily use over three years at standardized doses.

PubMed
2

RCT: Effects of Apocynum venetum (Venetron®) on Sleep and Stress in Those with Anxiety (2025)

Liang T et al. Nutraceuticals, 2025, 5(2):23

A randomized, double-blind, placebo-controlled trial involving 370 participants found that those taking Apocynum venetum leaf extract showed significant improvements in perceived stress and sleep disturbance compared to placebo. The extract was well tolerated with no severe side effects reported.

Link
3

Clinical Trial: Improvement of Sleep by Oral Intake of GABA and Apocynum venetum Leaf Extract (2015)

Yamatsu A, Yamashita Y, Maru I, Yang J, Tatsuzaki J, Kim M. Journal of Nutritional Science and Vitaminology, 2015, 61(2):182-187

This human clinical trial showed that 50 mg of Apocynum venetum leaf extract increased non-REM (deep) sleep time by 7.6%. When combined with GABA, it shortened sleep onset and enhanced deep sleep, suggesting complementary mechanisms for sleep improvement.

PubMed
4

Preclinical: Apocynum venetum Extract Does Not Induce CYP3A and P-glycoprotein in Rats (2004)

Irie K et al. Journal of Pharmacological Sciences, 2004

Unlike St. John's Wort, Apocynum venetum extract at recommended doses did not affect hepatic CYP3A enzyme activity or intestinal P-glycoprotein transport in rats, suggesting a lower risk of herb-drug interactions compared to some other botanical antidepressants.

PubMed
5

Clinical Study: Anti-aging, Antihypertensive and Antihyperlipemic Effects of Apocynum venetum Leaf Extract (1989)

Yang Z et al. Chinese Journal of Preventive Medicine, 1989

In 60 hypertensive patients treated for 8 weeks, mean blood pressure decreased significantly from 171/98 mmHg to 148/89 mmHg. In 40 patients with hyperlipidemia, HDL cholesterol increased significantly. Erythrocyte SOD levels also increased, suggesting antioxidant effects.

PubMed

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.