Man Jing Zi

Man Jing Zi (Vitex trifolia fruit, also known as Viticis Fructus) is the dried ripe fruit of Vitex trifolia L. or Vitex rotundifolia L.f. (family Lamiaceae, formerly Verbenaceae). In the traditional TCM classification system, Man Jing Zi is considered pungent and bitter in flavor with a slightly warm nature. It enters the Bladder, Liver, and Gallbladder meridians, giving it a central role in formulas that address Wind-Heat conditions affecting the head, eyes, and upper body.

Botanical description: Vitex trifolia is a woody shrub or small tree growing 2–5 meters tall, distributed widely across tropical and subtropical coastal regions of East and Southeast Asia. The leaves are typically trifoliate with elliptic to ovate leaflets, greyish-green on the lower surface and darker green above, with a characteristic aromatic odor when crushed. The plant produces small, lilac to pale purple flowers arranged in axillary cymes. The fruit is a small, globose drupe approximately 5–8 mm in diameter, grayish-black or dark brown at maturity, with a small persistent calyx at the apex. Inside the hard endocarp, the seed contains pale yellowish, oil-rich endosperm. Vitex rotundifolia is closely related, often considered a coastal variety, with more rounded leaflets and a prostrate or sprawling growth habit adapted to sandy coastal environments.

Habitat and cultivation: V. trifolia is native to coastal areas of China, Japan, Korea, India, Southeast Asia, and northern Australia. In China, it is found along the southeastern coast, including Fujian, Guangdong, Guangxi, Hainan, and Shandong provinces. The plant thrives in sandy soils, coastal dunes, and open sunny locations. V. rotundifolia is particularly common along the coastlines of eastern China and Korea. The fruits are harvested in autumn when fully ripe, then cleaned and sun-dried. Commercial cultivation is supplemented by wild collection in some regions.

Quality markers: The Chinese Pharmacopoeia specifies that high-quality Man Jing Zi should be spherical and intact, grayish-black or dark brown in color, with a hard texture and a characteristic aromatic odor. Premium-grade material is plump, uniform in size, and free from mold, insect damage, or excessive broken pieces. Chemical markers and pharmacopoeial standards are specified for quality control of commercial Man Jing Zi preparations, including minimum thresholds for specific flavonoid and diterpenoid constituents calculated on a dried basis.

In the traditional Chinese medicine theoretical framework, Man Jing Zi is understood in terms of its effects on specific patterns of disharmony (zheng). Because it enters the Bladder, Liver, and Gallbladder meridians and has a pungent, bitter, and slightly warm quality, it is traditionally indicated for a range of patterns involving Wind-Heat in the upper body, particularly affecting the head and eyes.

Dispersing Wind-Heat and clearing the head: Man Jing Zi is considered one of the primary TCM herbs for dispersing Wind-Heat from the head and upper body. In TCM theory, when Wind-Heat attacks the upper burners, it may manifest as headache (especially in the occipital and temporal regions), dizziness, and a sensation of heaviness in the head. Man Jing Zi is traditionally used to release the exterior and scatter Wind-Heat, addressing these head-related presentations. It is particularly valued for Wind-Heat type headaches and is a key ingredient in the classical formula Yin Qiao San and Chai Hu Shu Gan San and related prescriptions. It is commonly combined with Chuan Xiong (to move Blood and relieve pain) and Chai Hu (to soothe Liver Qi) in headache formulas.

Clearing the eyes and improving vision: Man Jing Zi enters the Liver meridian, and in TCM theory, the Liver opens into the eyes. When Liver Heat or Wind-Heat affects the eyes, symptoms such as red, swollen, and painful eyes, blurred vision, photophobia, and excessive tearing may appear. Man Jing Zi is traditionally used to clear Heat from the Liver channel and brighten the eyes. In classical practice, it is frequently combined with Ju Hua (chrysanthemum flower) and Chai Hu (Bupleurum) in eye-clearing formulas. The traditional combination of Man Jing Zi with Ju Hua, Sang Ye (mulberry leaf), and Jue Ming Zi (cassia seed) is a well-known approach for Wind-Heat affecting the eyes.

Alleviating headache and dizziness: One of the most prominent traditional uses of Man Jing Zi is for the treatment of headache, particularly the type classified in TCM as Wind-Heat headache or Wind-Cold headache affecting the Bladder meridian (which runs over the occipital region of the head). By dispersing Wind-Heat and unblocking the Bladder meridian channel, Man Jing Zi is believed to relieve pain in the back of the head and neck. It is a principal herb in Chuan Xiong Cha Tiao San, one of the most famous classical headache formulas in TCM. For headaches accompanied by Liver Yang rising, it may be combined with Chai Hu and Gou Teng (uncaria hook) to address both the Wind-Heat and the underlying Liver pattern.

Classical literature references: The Shen Nong Ben Cao Jing (Divine Farmer's Materia Medica Classic, circa 200 CE) classified Man Jing Zi as a middle-grade herb and recorded its traditional use for "benefiting the joints, freeing the nine orifices, improving the eyes and ears, and dispelling Wind." The Ben Cao Gang Mu (Compendium of Materia Medica, 1596 CE) by Li Shizhen described Man Jing Zi's ability to "disperse Wind-Heat, clear the head and brighten the eyes, and treat headache and red eyes" and discussed its traditional roles in treating ocular disorders and Wind-Heat conditions of the upper body.

Man Jing Zi contains a range of bioactive compounds that have been the subject of pharmacological investigation. The following overview summarizes the major chemical constituents identified in the dried ripe fruit of Vitex trifolia and Vitex rotundifolia and what is currently known about them from published research.

Casticin (vitexicarpin): Casticin is a polymethoxylated flavonoid and one of the principal pharmacologically active constituents identified in Man Jing Zi. It has been the most extensively studied compound from this herb. Pre-clinical research has reported anti-inflammatory, anticancer, neuroprotective, and analgesic activities for casticin. Studies suggest that casticin may exert anti-inflammatory effects through inhibition of NF-kappaB and STAT3 signaling pathways, reduction of pro-inflammatory cytokines, and suppression of oxidative stress. Its anticancer properties have been investigated in multiple cell line models. However, most evidence comes from animal and in-vitro studies; robust human clinical data are limited.

Vitexin and isovitexin: Vitexin (apigenin-8-C-glucoside) and isovitexin (apigenin-6-C-glucoside) are C-glycosylflavonoids found in Man Jing Zi. These compounds have been studied for their antioxidant, anti-inflammatory, and potential neuroprotective properties. Pre-clinical studies have reported that vitexin may protect against oxidative stress, reduce inflammatory mediator production, and modulate apoptotic pathways in cellular models. Their role in the overall pharmacological profile of whole-herb Man Jing Zi preparations is an active area of research.

Rotundifuran and labdane diterpenoids: Rotundifuran and related labdane-type diterpenoids (including viterotulin C, vitexilactone D, and vitetrifolin H) are significant terpenoid constituents of Man Jing Zi. These compounds have been studied for anti-inflammatory activities, with some studies reporting that labdane diterpenes from Vitex species may inhibit nitric oxide production and reduce pro-inflammatory cytokine release in macrophage models. Some diterpenoids from V. rotundifolia have also been investigated for anti-hyperlipidemic activities. The clinical relevance of these constituents in whole-herb preparations is not well established.

Other constituents: Man Jing Zi also contains iridoid derivatives, essential oils, and various other secondary metabolites. Three undescribed iridoid derivatives were recently isolated from the fruits of V. trifolia and showed cytotoxic and antimicrobial activities in preliminary testing. Most research on these secondary compounds remains at the pre-clinical stage, and their specific contributions to the pharmacological profile of whole-herb Man Jing Zi are not fully understood.

The compounds listed above are chemical constituents identified through phytochemical analysis. Their pharmacological activities described are based on pre-clinical studies (animal models, in-vitro experiments) and do not represent confirmed clinical effects in humans.

Man Jing Zi is an important ingredient in several classical formulas in the TCM tradition for dispersing Wind-Heat, clearing the head and eyes, and treating headache. Below are three key formulas that feature Man Jing Zi, along with their traditional indications and the role Man Jing Zi plays in each composition.

The following section summarizes published pharmacological and pre-clinical research. Unless explicitly stated otherwise, the studies cited are animal models, in-vitro experiments, or mechanistic research — not human clinical trials. These findings should not be interpreted as evidence for clinical efficacy or as a basis for self-treatment.

Anti-inflammatory effects of casticin: Casticin, the principal polymethoxylated flavonoid in Man Jing Zi, has been the most extensively studied compound from this herb. Pre-clinical research has reported that casticin may exert anti-inflammatory effects through multiple pathways, including inhibition of NF-kappaB and STAT3 signaling, reduction of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6), and suppression of oxidative stress. A 2018 study by Liou et al. published in Frontiers in Pharmacology demonstrated that casticin from Vitex trifolia alleviated eosinophilic airway inflammation and oxidative stress in a murine asthma model. Another study by Chu et al. (2020) in Inflammation reported that casticin attenuated cartilage degradation by inhibiting ROS-mediated NF-kappaB signaling. A comprehensive review by Chan et al. (2018) in Journal of Integrative Medicine summarized the anticancer and anti-inflammatory properties of casticin from Vitex species. It is important to emphasize that most of this evidence comes from animal and in-vitro studies; robust human clinical data are limited.

Anti-inflammatory diterpenoids: Multiple labdane-type diterpenes have been isolated from Man Jing Zi. A 2019 study by Fang et al. published in Journal of Asian Natural Products Research reported two new labdane diterpenes (viterotulin C and vitexilactone D) from the fruits of Vitex trifolia var. simplicifolia, along with five known diterpenes, some of which exhibited anti-inflammatory activity by inhibiting nitric oxide production in macrophage models. Wang et al. (2018) reported halimane-type diterpenoids from Vitex rotundifolia with anti-hyperlipidemia activities in Phytochemistry.

Neuroprotective and analgesic potential: Casticin, one of the major components of Vitex rotundifolia, has been reported to exert neuroprotective and analgesic activities in pre-clinical studies. A 2019 study by Lee et al. in Journal of Cellular Biochemistry described casticin's ability to inhibit STAT3 signaling and noted its reported pharmacological activities as an antiprolactin, anticancer, anti-inflammatory, neuroprotective, and analgesic agent. These findings are scientifically interesting given Man Jing Zi's traditional TCM use for headache, but the clinical significance for human headache or neurological conditions has not been established.

Cytotoxic and antimicrobial activities: Recent phytochemical studies have continued to isolate new bioactive compounds from Man Jing Zi. Huong et al. (2023) reported three undescribed iridoid derivatives from the fruits of Vitex trifolia with cytotoxic and antimicrobial activities in Chemistry & Biodiversity. Additionally, an iceberg pharmacokinetic study by Tao et al. (2025) simultaneously evaluated five flavonoids from Viticis Fructus extract in rats using UHPLC-ESI-MS/MS, providing pharmacokinetic data for several key constituents.

What the research does NOT show: Despite promising pre-clinical signals, the research on Man Jing Zi and its active compounds does NOT demonstrate conclusive clinical efficacy for any specific disease in humans. There is no robust evidence from large-scale, randomized, placebo-controlled clinical trials that Man Jing Zi can treat, cure, or prevent headache, inflammatory disorders, cancer, or any other medical condition. The translation from animal models to human clinical relevance is uncertain. This page does not endorse Man Jing Zi as a treatment for any condition.

Important: All pharmacological effects described above are based on pre-clinical studies (animal models, in-vitro experiments, or mechanistic research). They do not constitute evidence of clinical efficacy in humans. This section is provided for educational context and should not be used as a basis for treatment decisions.

General safety profile: Man Jing Zi is widely used in TCM practice and is generally considered to have a favorable safety profile when used appropriately in formula combinations. However, like all herbal products, it is not free of risk. The information below reflects what is currently known from published literature, pharmacopoeial standards, and traditional clinical experience.

Qi deficiency: In traditional TCM theory, Man Jing Zi is pungent and dispersing in nature. Individuals with Qi deficiency — characterized by chronic fatigue, spontaneous sweating, shortness of breath, a weak pulse, and a pale tongue — should generally use Man Jing Zi with caution. Its exterior-dispersing properties may theoretically further deplete Qi in those who are already deficient. When Man Jing Zi is needed for Wind-Heat in a patient with underlying Qi deficiency, it is traditionally combined with Qi-tonifying herbs to mitigate its depleting effect.

Headache due to blood deficiency: In TCM theory, headaches arising from blood deficiency (rather than Wind-Heat) require nourishing and tonifying approaches rather than dispersing herbs. Using Man Jing Zi in such patterns may theoretically worsen the underlying deficiency by further scattering what is already depleted. Individuals with chronic headaches accompanied by dizziness, pale complexion, and a thready pulse should seek professional TCM pattern differentiation before using Man Jing Zi.

Pregnancy and lactation: Man Jing Zi does not have a specific classical contraindication for pregnancy recorded in major Materia Medica texts. However, its pungent and dispersing qualities mean it should be used with caution during pregnancy. In modern practice, TCM practitioners generally recommend avoiding or minimizing the use of exterior-releasing herbs during pregnancy unless specifically indicated. Modern pre-clinical safety data on Man Jing Zi constituents in pregnancy are insufficient. Do not use Man Jing Zi during pregnancy without direct supervision from a qualified healthcare professional.

Drug interactions: Pre-clinical data suggest that certain constituents in Man Jing Zi, particularly casticin, may affect the activity of hepatic cytochrome P450 enzymes and modulate signaling pathways such as STAT3 and NF-kappaB, which could theoretically alter the metabolism or effects of certain medications. There is theoretical potential for additive effects when combined with antihypertensive or analgesic medications, given the reported pharmacological activities. Clinical interaction data for whole-herb Man Jing Zi are very limited. Consult a qualified healthcare professional before combining Man Jing Zi with any prescription medications.

Reported side effects: Based on available reports, side effects associated with Man Jing Zi are generally rare and mild when used at appropriate doses. Occasional reports include mild gastrointestinal discomfort (nausea or abdominal distension, particularly in individuals with pre-existing digestive weakness) or allergic reactions (skin rash) in sensitive individuals. Any suspected adverse effects should be reported to a healthcare professional.

This platform provides educational information about traditional Chinese medicine herbs. It does not recommend, endorse, or prescribe the use of Man Jing Zi or any other herbal product for the treatment of any medical condition. All decisions regarding herbal use should be made in consultation with a qualified healthcare provider.