Manjistha: Traditional Uses, Evidence & Safety

TL;DR

Manjistha is the root of Rubia cordifolia (Indian madder), Ayurveda's classic "blood-purifying" herb for skin disorders. A comprehensive 2022 review (PMID 36160419) found its pharmacology, anti-inflammatory, antioxidant, rests almost entirely on animal and laboratory studies, with no human trials of the single herb. Clinical safety data are lacking.

What it is

Manjistha is the root (rhizome) of Rubia cordifolia L. (family Rubiaceae), a perennial climbing vine known as Indian madder. In traditional Chinese medicine the same rhizome is also a long-used drug, applied for improving blood circulation, hemostasis, and activating collaterals (Wen et al. 2022, comprehensive review). Phytochemistry studies have reported more than 100 compounds in R. cordifolia, including bicyclic peptides, terpenes, polysaccharides, flavonoids, and quinones, with quinones and peptides the most abundant classes (same review).

This article covers the single herb only. Manjistha is also the lead ingredient of the classical polyherbal decoction Mahamanjishthadi Kashayam: but research on any single ingredient is not evidence for that formula, as our companion article on mahamanjishthadi explains.

Traditional use

In Ayurveda, manjistha is classified among the raktashodhaka (blood-purifying) herbs, traditionally used for chronic skin disorders. It leads the classical formula Mahamanjishthadi Kashayam, traditionally prescribed for skin disorders and "blood purification" (our companion article on mahamanjishthadi). In traditional Chinese medicine, prescriptions containing R. cordifolia have been widely used clinically for abnormal uterine bleeding, primary dysmenorrhea and other gynecological conditions, allergic purpura, and renal hemorrhage (Wen et al. 2022). These are traditional claims, not clinical proof: the human evidence is examined below.

What modern research says

Almost entirely preclinical

A comprehensive 2022 review, systematically searching CNKI, Baidu Scholar, PubMed, and Web of Science, plus the Chinese Pharmacopoeia and Chinese Materia Medica, catalogued modern pharmacological findings for R. cordifolia: anti-tumor, anti-oxidative, anti-platelet aggregation, and anti-inflammatory effects. Its central conclusion is blunt: most studies are preclinical, the pharmacological mechanism has not been thoroughly studied, and there are few pharmacokinetic and toxicity studies: "therefore the clinical safety data for R. cordifolia is lacking" (Wen et al. 2022).

No human trials of the single herb

The review identifies no randomized human trial of manjistha alone for any condition. The one recent human study in this neighborhood, an open-label 2025 study of a four-drug Ayurvedic regimen for psoriasis that included Mahamanjishthadi Kashayam, tested a multi-herb formula, not manjistha itself, and is covered in our mahamanjishthadi article. It cannot be used to claim anything about the single herb.

What the evidence does not support (yet)

Any claim that manjistha treats skin disease, purifies the blood, or heals the liver in humans is ahead of the data. The traditional "blood purifier" framing is a classical Ayurvedic classification, not a measured physiological effect.

Dosage

No dose of manjistha has been established in humans: there are no clinical trials to derive one from (Wen et al. 2022). This article gives no dosing guidance because none exists to give.

Safety & contraindications

Clinical safety data for R. cordifolia are lacking, with few pharmacokinetic and toxicity studies in the literature (Wen et al. 2022). That means there is no evidence-based safety profile for the single herb: no established side-effect list, no interaction data, and no safety information for pregnancy or breastfeeding. Do not self-prescribe it for any condition; speak with a qualified practitioner first.

FAQs

Is manjistha proven to help skin disorders?

No. Manjistha's traditional reputation as a "blood purifier" for skin conditions is classical Ayurvedic classification, and its pharmacology rests on animal and laboratory studies. There are no human trials of the single herb for any skin condition.

Is manjistha the same as mahamanjishthadi?

No. Manjistha is the single herb (Rubia cordifolia root); Mahamanjishthadi Kashayam is a classical polyherbal decoction of about 45 herbs led by manjistha. Research on one is not evidence for the other: see our mahamanjishthadi article.

Is manjistha safe?

Unknown. Clinical safety data for Rubia cordifolia are lacking, with few pharmacokinetic and toxicity studies (Wen et al. 2022). There is no evidence-based safety profile, including for pregnancy and breastfeeding.

What part of the plant is used?

The rhizome/root: the medicinal part in both Ayurvedic and Chinese traditional use (Wen et al. 2022).

Why is manjistha called a "blood purifier"?

It is a classical Ayurvedic classification (raktashodhaka), reflecting its traditional use for skin disorders: not a measured physiological effect. No human study has validated "blood purification" as an outcome.

Sources

Disclaimer

This article is for educational purposes only and is not medical advice. Herbal products can interact with medications and are not suitable for everyone. Talk to a qualified healthcare practitioner before use — especially if you are pregnant, breastfeeding, managing a medical condition, or taking prescription medicines.