Herb Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

Lian Zi Xin

Lotus plumule · 莲子心

Nelumbo nucifera Gaertn. · Plumula Nelumbinis

Also known as: Lian Xin (莲心)

Lian Zi Xin (Lotus plumule) plant

Images shown are for educational purposes only

Lotus plumule is the tiny green embryo found inside the lotus seed, well known for its intensely bitter taste. In Chinese medicine, it is prized for calming the mind, clearing excess heat from the Heart, and promoting restful sleep. It is commonly brewed as a simple tea for irritability, restlessness, mouth sores, and mild insomnia.

Category Heat-clearing herbs Herbs that clear Heat and drain Fire (清热泻火药)
Therapeutic focus Sleep Support Emotional Wellbeing Heart health Blood Pressure Support

TCM Properties

Temperature

Cold

Taste

Bitter (苦 kǔ)

Channels entered

Heart, Kidneys, Pericardium

Parts used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

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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 Lian Zi Xin does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Lian Zi Xin is primarily used to support these areas of health:

Sleep Support Emotional Wellbeing Heart health Blood Pressure Support

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Lian Zi Xin performs to restore balance in the body:

Clears Heart Fire Calms the Spirit Promotes Heart-Kidney Communication Secures Essence and Stops Seminal Emission Cools the Blood and Stops Bleeding Clears Heat and Eliminates Irritability

How these actions work

'Clears Heart Fire' is the primary action of Lián Zǐ Xīn. The Heart in TCM governs mental activity and consciousness. When excessive Heat accumulates in the Heart, it produces restlessness, irritability, insomnia, mouth and tongue sores, and a red tongue tip. Lián Zǐ Xīn's bitter and cold nature directly drains this Fire. In severe febrile disease where heat invades the Pericardium (the Heart's protective envelope), causing delirium and loss of consciousness, Lián Zǐ Xīn is used alongside other heart-clearing herbs.

'Calms the spirit' follows naturally from clearing Heart Fire. When excess heat disturbs the spirit (the Heart's 'resident'), a person becomes agitated, anxious, and unable to sleep. By draining the heat that unsettles the spirit, Lián Zǐ Xīn promotes mental calm and restful sleep.

'Facilitates Heart-Kidney communication' (交通心肾) refers to the vital connection between the Heart (Fire, above) and the Kidneys (Water, below). In health, Heart Fire descends to warm the Kidneys, and Kidney Water ascends to cool the Heart. When this communication breaks down, Heart Fire flares upward unchecked, causing insomnia and restlessness, while the Kidneys below lose their grip on Essence, leading to seminal emission. The Wēn Bìng Tiáo Biàn describes Lián Zǐ Xīn as traveling from the Heart down to the Kidneys and then circling back upward, restoring this two-way flow.

'Astringes Essence and stops seminal emission' means the herb helps the body retain reproductive Essence (Jīng). This action addresses involuntary seminal loss linked to Heart-Kidney disharmony, where unchecked Heart Fire disturbs the Kidney's storage function.

'Stops bleeding due to Blood Heat' applies when Heat forces Blood out of the vessels, causing vomiting of blood or nosebleeds. Lián Zǐ Xīn's cold nature cools the Blood and helps slow the bleeding.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Lian Zi Xin is used to help correct these specific patterns.

Why Lian Zi Xin addresses this pattern

When Heart Fire blazes, the spirit is disturbed and Heat manifests in the upper body: the tongue tip turns red, mouth and tongue ulcers appear, and the mind becomes restless and agitated. Lián Zǐ Xīn enters the Heart channel with its bitter, cold nature, directly draining the excess Fire. Its bitter taste descends and purges, pulling Heat downward and out, while its cold temperature counteracts the pathological warmth. This is the most straightforward application of the herb and the reason it is classified among the Fire-draining herbs.

A practitioner would look for one or more of these signs

Insomnia

Difficulty falling asleep due to mental restlessness

Mouth Ulcers

Recurrent mouth and tongue sores

Irritability

Agitation and feeling of heat in the chest

Excessive Thirst

Thirst with desire for cold drinks

Commonly Used For

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

Arises from: Heart Fire blazing Heart and Kidney Yin Deficiency

TCM Interpretation

In TCM, sleep depends on the spirit (Shén) returning peacefully to the Heart at night. When Heart Fire blazes, the spirit is agitated and cannot settle, making it hard to fall asleep. When the Heart and Kidneys fail to communicate, Heart Fire rises unchecked while Kidney Water cannot cool it from below. This creates a restless state often with vivid dreams, a hot feeling in the chest, and waking frequently through the night. The tongue tip is typically red, and the pulse feels thin and rapid.

Why Lian Zi Xin Helps

Lián Zǐ Xīn directly targets the Heart with its bitter, cold nature, draining the excess Fire that agitates the spirit. Once Heart Fire is reduced, the spirit can settle and sleep returns. For insomnia from Heart-Kidney disharmony, Lián Zǐ Xīn has the unique ability among heat-clearing herbs to bridge the Heart and Kidneys, guiding Heart Fire downward while allowing Kidney Water to rise. Modern pharmacological studies have found that the alkaloids in lotus plumule (particularly liensinine and neferine) have sedative and antiarrhythmic effects, supporting its traditional use for sleep and heart calm. It is best suited for mild to moderate insomnia with clear heat signs, and is commonly brewed as a bedtime tea.

Also commonly used for

Mouth Ulcers

Recurrent oral ulcers from Heart Fire

Irritability

Anxiety and agitation with heat signs

Palpitations

Heart palpitations from Heart Fire or Heart-Kidney disharmony

Night Sweats

When related to Yin deficiency with Heart Fire

Premature Ejaculation

Spermatorrhea or nocturnal emission from Heart-Kidney disharmony

Excessive Thirst

Thirst from internal Heat

Vomiting Blood

Blood-Heat pattern hematemesis

Herb Properties

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

Temperature

Cold

Taste

Bitter (苦 kǔ)

Channels Entered

Heart Kidneys Pericardium

Parts Used

Seed (种子 zhǒng zǐ / 子 zǐ / 仁 rén)

Dosage & Preparation

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

Standard dosage

1.5–5g

Maximum dosage

Up to 5g in decoction. This herb is used at relatively small doses; exceeding this range is unnecessary and risks cold-damage to the Spleen and Stomach.

Dosage notes

Lian Zi Xin is characteristically used at low doses due to its intense bitterness and strong cold nature. For clearing Heart Fire and calming the spirit (insomnia, irritability), 1.5 to 3g is typical. For use in febrile disease formulas such as Qing Gong Tang, the classical dose is around 1.5g (five fen in traditional measurement). When used as a daily tea for mild summer-heat or mild insomnia, 1 to 2g steeped in boiling water is sufficient. Higher doses approaching 5g are reserved for more pronounced Heart Fire patterns with significant insomnia, mouth sores, or blood-heat bleeding, and should be used for short courses only.

Preparation

Lian Zi Xin is very light and small. When used in a decoction with other herbs, it should be added in the last 5 to 10 minutes of cooking to preserve its volatile alkaloids and avoid over-extraction of bitterness. It is also very commonly used simply steeped in freshly boiled water as a tea (not decocted), which is the traditional folk preparation. When ground into powder for use in classical formulas, it can be taken directly with water or rice water.

Common Herb Pairs

These ingredients are traditionally combined with Lian Zi Xin for enhanced therapeutic effect

Huang Lian
Huang Lian Huáng Lián 3g : Lián Zǐ Xīn 2g

Huáng Lián and Lián Zǐ Xīn both powerfully clear Heart Fire, but through complementary mechanisms. Huáng Lián is intensely bitter and cold, broadly clearing Heat and drying Dampness across the middle and upper burners. Lián Zǐ Xīn adds specificity by targeting the Heart and Pericardium and restoring Heart-Kidney communication. Together they create a strong Heart Fire-clearing pair that can also calm the spirit.

When to use: Severe Heart Fire with intense irritability, insomnia, mouth and tongue sores, and emotional agitation. Also useful when Heart Fire is combined with Stomach Heat.

Tian Men Dong
Tian Men Dong Mài Mén Dōng 9g : Lián Zǐ Xīn 2g

Mài Mén Dōng nourishes Yin and generates fluids, while Lián Zǐ Xīn clears Heart Fire. Together they address both the root (Yin deficiency) and the branch (excess Fire), preventing the cold, bitter nature of Lián Zǐ Xīn from further damaging fluids. This combination appears in the classical formula Qīng Gōng Tāng.

When to use: Heart Fire with Yin deficiency: insomnia, dry mouth and throat, restlessness, thirst, and a red tongue with little coating.

Suan Zao Ren
Suan Zao Ren Suān Zǎo Rén 10-15g : Lián Zǐ Xīn 2-3g

Suān Zǎo Rén nourishes Heart Blood and calms the spirit through its sweet-sour astringent nature, while Lián Zǐ Xīn clears Heart Fire. One tonifies and calms, the other drains and cools. Together they address insomnia from both the deficiency and excess sides of Heart disharmony.

When to use: Insomnia with Heart Blood deficiency complicated by mild Heart Fire: difficulty falling asleep, palpitations, anxiety, dream-disturbed sleep, and a red tongue tip.

Shu Di Huang
Shu Di Huang Shēng Dì Huáng 12-15g : Lián Zǐ Xīn 2-3g

Shēng Dì Huáng cools the Blood and nourishes Yin, while Lián Zǐ Xīn clears Heart Fire. Combined, they cool heat at both the Qi and Blood levels, nourish depleted Yin, and quiet the spirit. This pairing is effective when Heart Fire has injured Yin fluids or caused bleeding from Blood Heat.

When to use: Yin deficiency with Heart Fire causing night sweats, insomnia, nocturnal emission, dry mouth, and bleeding from Blood Heat.

Key Formulas

These well-known formulas feature Lian Zi Xin in a prominent role

Qing Gong Tang 清宫汤 Assistant

Qīng Gōng Tāng (Clear the Palace Decoction) from the Wēn Bìng Tiáo Biàn is the most iconic formula containing Lián Zǐ Xīn. Though used at a small dose (1.5-2g), it plays a defining role in clearing Heart-Pericardium Fire alongside Lián Qiào Xīn, Zhú Yè Juǎn Xīn, and Xuán Shēn. The formula's signature design uses the 'heart' (core) of each herb to target the heart of the body, perfectly showcasing Lián Zǐ Xīn's specific affinity for the Heart and Pericardium channels.

Comparable Ingredients

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

Dan Zhu Ye
Lian Zi Xin vs Dan Zhu Ye

Both Zhú Yè (bamboo leaf) and Lián Zǐ Xīn clear Heart Fire and treat irritability with insomnia. However, Zhú Yè is lighter in nature and also promotes urination to drain Heat downward through the urine, making it better for Heat transferring from the Heart to the Small Intestine (causing painful, dark urination). Lián Zǐ Xīn is more focused on the Heart-Kidney axis and uniquely astringes Essence to stop seminal emission, which Zhú Yè cannot do.

Huang Lian
Lian Zi Xin vs Huang Lian

Huáng Lián is a much broader and more powerful Heat-clearing herb that drains Fire from the Heart, Stomach, and Liver, and also dries Dampness. Lián Zǐ Xīn is narrower in scope, specifically targeting Heart and Pericardium Fire, and uniquely restores Heart-Kidney communication. Huáng Lián is chosen for intense, widespread Heat patterns with potential Dampness; Lián Zǐ Xīn is preferred for milder Heart Fire, insomnia, and Heart-Kidney disharmony, and is gentle enough for daily use as a tea.

Lian Zi
Lian Zi Xin vs Lian Zi

Lián Zǐ (the lotus seed flesh without the plumule) is sweet, astringent, and neutral, entering the Spleen, Kidney, and Heart channels. It tonifies the Spleen, stops diarrhea, calms the spirit, and astringes Essence. Lián Zǐ Xīn (the plumule inside the seed) is bitter and cold, and its primary action is to clear Heart Fire rather than tonify. They come from the same seed but have nearly opposite therapeutic profiles: Lián Zǐ is a tonifying, stabilizing herb for deficiency; Lián Zǐ Xīn is a draining, cooling herb for excess Heart Heat.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Lian Zi Xin

Lian Zi Xin is a distinctive part of the lotus seed and is not commonly subject to direct adulteration. However, confusion may arise in two ways: (1) Substitution with the whole lotus seed (Lian Zi, 莲子), which has fundamentally different properties (sweet, neutral, tonifying) compared to the plumule (bitter, cold, draining). Practitioners must be clear about which part is intended. (2) Quality degradation through use of plumules from boiled or processed lotus seeds, which have already lost much of their alkaloid content and medicinal potency. Authentic Lian Zi Xin should come from raw (uncooked) seeds. Always verify the bright green colour and intense bitterness as markers of genuine, potent material.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Lian Zi Xin

Non-toxic

Lian Zi Xin is classified as non-toxic in the Ben Cao Gang Mu and has a long history of safe use both as medicine and as a food-grade tea ingredient. Its main alkaloids (liensinine, isoliensinine, neferine) have well-documented pharmacological activity but are present in small quantities at standard doses. No specific toxic reactions have been reported at therapeutic dosages. The primary safety concern is its strongly cold and bitter nature, which can damage digestive function if used excessively or by inappropriate patients (those with Spleen-Stomach cold deficiency), rather than any chemical toxicity.

Contraindications

Situations where Lian Zi Xin should not be used or requires extra caution

Caution

Spleen and Stomach deficiency cold (脾胃虚寒): Lian Zi Xin is bitter and cold in nature. People with a cold, weak digestive system who experience loose stools, poor appetite, or abdominal cold pain should avoid this herb, as it can further damage the Spleen and Stomach yang.

Caution

Absence of true Heat: This herb is specifically for clearing Heart Fire and internal Heat. It should not be used in people who do not have genuine Heat signs (such as red tongue tip, irritability, insomnia from Heart Fire), as its cold nature will damage Qi and yang over time.

Caution

Prolonged or excessive use: Long-term consumption, even as tea, can injure the yang Qi and produce cold symptoms in constitutionally cold individuals. It should be used for defined courses rather than indefinitely.

Caution

Constipation due to Blood or Yin deficiency with dryness: The cold, bitter nature may further impair digestive function in those with constipation arising from deficiency rather than excess Heat.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

No specific contraindication during pregnancy has been traditionally recorded for Lian Zi Xin. It does not have blood-moving or uterine-stimulating properties. However, its strongly cold and bitter nature means it should be used cautiously during pregnancy, as excessive cold herbs can theoretically impair Spleen function and nutrient absorption. Use only when there is a clear indication of Heart Fire, and at the standard low dosage, under practitioner guidance.

Breastfeeding

No specific adverse effects during breastfeeding have been documented. Lian Zi Xin is used at very low doses and has traditionally been consumed as a tea by postpartum women to clear Heart Fire and improve sleep. However, its cold nature could theoretically affect milk production or digestive comfort in the nursing infant if used excessively. Use at standard doses for short courses when clearly indicated, and discontinue if the infant shows signs of digestive disturbance.

Children

Lian Zi Xin can be used in children at appropriately reduced doses (typically 0.5 to 1.5g depending on age) for conditions such as mouth sores from Heart Fire, restless sleep, or febrile irritability. Its strongly bitter taste makes compliance difficult in young children. It is best administered as a dilute tea with a small amount of honey (for children over 1 year) to mask the bitterness. Avoid in children with weak digestion or chronic loose stools.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Lian Zi Xin

Antihypertensive medications: Lian Zi Xin's alkaloids (liensinine, neferine) have demonstrated blood-pressure-lowering effects through peripheral vasodilation and histamine release. Concurrent use with antihypertensive drugs could potentially cause additive hypotensive effects. Blood pressure should be monitored if used alongside such medications.

Antiarrhythmic drugs: Neferine from lotus plumule has documented antiarrhythmic activity, including calcium channel antagonism and effects on cardiac action potential duration. Caution is warranted when combining with cardiac medications, particularly antiarrhythmic agents, as additive effects on cardiac rhythm are theoretically possible.

Sedative or anxiolytic medications: The alkaloids have demonstrated sedative and sleep-promoting effects via modulation of serotonin receptors and GABA pathways. Additive sedation may occur when used with benzodiazepines or other CNS depressants.

Dietary Advice

Foods and dietary considerations when taking Lian Zi Xin

While taking Lian Zi Xin, avoid excessively spicy, fried, or greasy foods, as these generate internal Heat and work against the herb's cooling purpose. Cold and raw foods should also be moderated if the digestive system is weak, since the herb itself is already cold in nature. Light, easy-to-digest foods are best. If using Lian Zi Xin for Heart Fire with insomnia, avoid stimulating foods and drinks (strong tea, coffee, alcohol) in the evening.

Botanical Description

Physical characteristics and morphology of the Lian Zi Xin source plant

Nelumbo nucifera Gaertn. (sacred lotus) is a large perennial aquatic herb belonging to the family Nelumbonaceae. It grows in shallow ponds, lakes, marshes, and flooded fields, rooting in the muddy bottom with thick, creeping rhizomes (the familiar lotus root used in cooking). The plant produces large, circular, peltate leaves on long stalks that rise above the water surface, famously repelling water due to their waxy, self-cleaning surface. Flowers are large and showy, typically pink or white, with numerous petals surrounding a distinctive flat-topped receptacle (the lotus seedpod).

Lian Zi Xin is not the whole seed but specifically the tiny green embryo (plumule and radicle) found at the centre of the mature lotus seed. When a ripe lotus seed is split open, the two yellowish-white cotyledons reveal a small, bright green, stick-shaped structure about 1.2 to 1.6 cm long. This is the plumule: it has two tightly folded, shield-shaped embryonic leaves at the top (one longer than the other) and a short yellowish-green radicle at the base. Though minuscule, it is intensely bitter and is the medicinal part used as Lian Zi Xin.

Sourcing & Harvesting

Where Lian Zi Xin is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Autumn, when lotus seeds are fully mature. The plumule is extracted from the ripe seeds during harvest and processing, then sun-dried.

Primary growing regions

Lian Zi Xin is produced wherever lotus (Nelumbo nucifera) is cultivated across southern and central China. The primary producing regions include Hunan, Fujian, Jiangxi, Hubei, Jiangsu, and Zhejiang provinces. Among these, Fujian (particularly Jianning County) and Hunan (particularly Xiangtan) are considered the premier terroir (道地药材) regions. Jiangxi (Guangchang County) also produces famous "white lotus" seeds. Lotus is also cultivated in India, Vietnam, Korea, Japan, and other parts of Southeast Asia, though Chinese-origin material dominates the traditional medicine market.

Quality indicators

Good quality Lian Zi Xin (dried lotus plumule) is stick-shaped, about 1.2 to 1.6 cm long, with a bright green colour at the top where the two embryonic leaves are folded tightly together. The base (radicle) should be yellowish-green. The texture should be brittle and easily snapped, with the cross-section showing multiple small holes. It should have no particular smell but an intensely bitter taste. The best material is large in size, uniformly green in colour, and has not been previously boiled (uncooked specimens retain their active alkaloids better). Dull, brownish, or limp plumules indicate age, poor storage, or inferior processing.

Classical Texts

Key passages from the classical Chinese medical texts that describe Lian Zi Xin and its therapeutic uses

Classical Quotes on Lian Zi Xin (莲子心)

  • Ben Cao Gang Mu (《本草纲目》, Li Shizhen)
    Original: 苦，寒，无毒。
    Translation: Bitter, cold, non-toxic.
  • Wen Bing Tiao Bian (《温病条辨》, Wu Jutong)
    Original: 莲心，由心走肾，能使心火下通于肾，又回环上升，能使肾水上潮于心。
    Translation: Lotus plumule travels from the Heart to the Kidney, enabling Heart Fire to descend and communicate with the Kidney, and in turn enables Kidney Water to rise and reach the Heart.
  • Ben Cao Zai Xin (《本草再新》)
    Original: 清心火，平肝火，泻脾火，降肺火。消暑除烦，生津止渴，治目红肿。
    Translation: Clears Heart Fire, calms Liver Fire, drains Spleen Fire, and lowers Lung Fire. Relieves summer-heat and irritability, generates fluids and relieves thirst, treats red and swollen eyes.
  • Yi Lin Zuan Yao (《医林纂要》)
    Original: 泻心，坚肾。
    Translation: Drains the Heart, strengthens the Kidney.
  • Sui Xi Ju Yin Shi Pu (《随息居饮食谱》, Wang Shixiong)
    Original: 敛液止汗，清热养神，止血固精。
    Translation: Restrains fluids and stops sweating, clears Heat and nourishes the spirit, stops bleeding and secures the essence.

Historical Context

The history and evolution of Lian Zi Xin's use in Chinese medicine over the centuries

The lotus has deep cultural and medicinal significance in China. The name 莲子心 (Lian Zi Xin) literally means "lotus seed heart," referring to the green embryo at the centre of the seed. Classical aliases include 薏 (yì), 苦薏 (kǔ yì, "bitter kernel"), and 莲薏 (lián yì), reflecting its intensely bitter taste. The character 心 (xīn, heart) is fitting both anatomically (it sits at the heart of the seed) and medicinally (it primarily treats the Heart organ system).

Lian Zi Xin came into prominent medicinal use somewhat later than the lotus seed itself. The seed (Lian Zi) was recorded in the Shen Nong Ben Cao Jing as an upper-grade herb. The plumule was noted in Lu Ji's commentary on the Shi Jing (Book of Songs) as extremely bitter, and Li Shizhen's Ben Cao Gang Mu (16th century) formally recorded it as bitter, cold, and non-toxic. Its most celebrated clinical application came through Wu Jutong's Wen Bing Tiao Bian (1798), where it appears in Qing Gong Tang (Clear the Palace Decoction) for febrile disease with delirium. Wu Jutong's famous description of Lian Zi Xin as "travelling from the Heart to the Kidney" to facilitate Heart-Kidney communication became a cornerstone of its theoretical identity.

In modern times, the herb gained additional attention when pharmacological research identified its bisbenzylisoquinoline alkaloids (liensinine, isoliensinine, neferine) as having significant cardiovascular effects, including blood pressure lowering and antiarrhythmic properties. This confirmed the traditional observation of its Heart-calming actions through a modern lens. Today it remains widely used both as a medicine and as a health tea, particularly popular in summer for clearing Heart Fire and relieving irritability.

Modern Research

5 published studies investigating the pharmacological effects or clinical outcomes of Lian Zi Xin

1

Comprehensive Review: Plumula Nelumbinis — Traditional Uses, Phytochemistry, Pharmacology, Pharmacokinetics and Safety (2020)

Chen S, Li X, Wu J, Li J, Xiao M, Yang Y, Liu Z, Cheng Y. Journal of Ethnopharmacology, 2021, 266: 113429.

A systematic review summarizing the botany, traditional uses, phytochemistry (over 130 compounds identified including alkaloids, flavonoids, and polysaccharides), pharmacology, and safety of lotus plumule. The review confirmed that traditional uses for cardiovascular and neurological diseases have been supported by pharmacological investigation, while noting that molecular mechanisms and toxicology studies remain incomplete.

DOI
2

Pharmacological Potential and Mechanisms of Bisbenzylisoquinoline Alkaloids from Lotus Seed Embryos — Review (2025)

Published in PMC, 2025. PMC12562030.

A review of liensinine, isoliensinine, and neferine from lotus plumule covering antitumor, anti-inflammatory, antihypertensive, neuroprotective, antifibrotic, and antiarrhythmic effects. Neferine demonstrated concentration-dependent electrophysiological effects on cardiac tissue and suppressed neuroinflammation via the NF-kB signaling pathway in Parkinson's disease models.

PubMed
3

Action and Mechanisms of Neferine in Inflammatory Diseases — Review (2025)

Zhang Q, Zhou Q, Li H. Molecular Medicine Reports, 2025, 32: 174.

A focused review on the anti-inflammatory properties of neferine, a major bisbenzylisoquinoline alkaloid from lotus plumule. The review evaluated its effects on inflammatory pathways in both in vivo and in vitro studies, finding diverse pharmacological activities including antitumor, anti-fibrosis, anti-oxidative stress, anti-platelet aggregation, and anti-arrhythmic effects.

DOI
4

Anti-inflammatory Activity of Lotus Plumule Polysaccharides via TLR-2 and TLR-4 Suppression (2013)

Published in Journal of Ethnopharmacology, 2013.

Purified polysaccharides from lotus plumule demonstrated strong anti-inflammatory effects in mouse splenocytes by inhibiting Toll-like receptor 2 and 4 expression in normal, inflammatory, and repair conditions. This preclinical study supports the traditional anti-inflammatory and Heat-clearing applications.

PubMed
5

Lotus Plumule Polysaccharide Ameliorates Pancreatic Islet Loss and Lipid Profiles in Non-obese Diabetic Mice (2013)

Food and Chemical Toxicology, 2013.

A newly isolated lotus plumule polysaccharide (LPPS) was administered to non-obese diabetic mice for 15 weeks. LPPS significantly increased pancreatic islet cell numbers, improved serum lipid profiles by increasing HDL-cholesterol and decreasing LDL-cholesterol, suggesting potential benefit in type 1 diabetes progression.

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.