Nirgundi: Traditional Uses, Evidence & Safety

TL;DR

Nirgundi (Vitex negundo) is the Ayurvedic leaf drug used traditionally for joint pain, sprains, and swelling. Human evidence is thin: two small studies (21–32 participants) suggest topical Nirgundi may ease knee-osteoarthritis symptoms, but neither was placebo-controlled. No long-term safety data exist. Avoid internal use during pregnancy.

(46 words. Sources: randomized phonophoresis trial, n=32; open-label trial, n=21; rodent toxicology review.)

What it is

Nirgundi is the Ayurvedic name for the leaf of Vitex negundo L., a shrub of the verbena family (Verbenaceae). The Ayurvedic Pharmacopoeia of India monographs the drug as the leaf, and the iridoid glycosides negundoside and agnuside are reported among its marker compounds (Think India Quarterly API table). In both traditional practice and the small human studies conducted so far, the leaf, including preparations such as Nirgundi Taila, a medicated oil, is the part used (JRTM open-label trial).

Traditional use

Classical Ayurvedic texts place nirgundi among Charaka Samhita's vishaghna (antitoxic) and krimighna (anthelmintic) herb groups, and Sushruta Samhita lists it in the surasadi gana (WJPR review). A review of its traditional profile lists joint disorders, low back pain, osteoarthritis, rheumatoid arthritis (amavata), and sciatica among classical indications, with leaves also applied as fomentations or poultices for sprains, rheumatic swellings, and wounds (WJPR review; IJSAT 2026 review). Its recorded rasa-panchaka profile is katu and tikta tastes (pungent, bitter), laghu and ruksha qualities (light, dry), ushna potency (hot), katu post-digestive effect, and vata–kapha-pacifying action (Live Ayurved). These are traditional classifications, not clinical proof: the human evidence is assessed separately below.

What modern research says

Knee osteoarthritis — joint symptoms

The human evidence is thin: I found two small studies of topical nirgundi for knee osteoarthritis, and neither isolates the herb's own effect.

In a randomized trial of 32 adults with grade-2 knee osteoarthritis, one group received Vitex negundo oil delivered by phonophoresis (ultrasound-assisted skin delivery) and the other received diclofenac-gel phonophoresis, for two weeks: both alongside knee exercises (conference abstract). Both groups improved on pain and function scores; the nirgundi-oil group improved marginally more (p<0.005). The trial was tiny, short, tested a combination intervention rather than nirgundi alone, and is published only as a conference abstract: it cannot establish that nirgundi itself caused the difference.

Separately, an open-label, single-arm trial treated 21 knee-osteoarthritis patients with topical Nirgundi Taila applied for 20 minutes twice daily for 60 days, reporting mild symptomatic improvement: but with no control group and no blinding, this design cannot separate an herb effect from placebo or natural variation (JRTM).

Animal studies are more numerous: ethanolic leaf extracts showed antioxidant and anti-inflammatory activity in rat models, including carrageenan-induced paw inflammation (IJPS). Rat studies do not prove human benefit, and a recently published knee-osteoarthritis trial protocol characterizes the existing nirgundi evidence as preliminary and exploratory (PMC).

What the evidence does not support (yet)

No placebo-controlled trials of oral nirgundi for any condition were identified, and no long-term human safety data were identified. Claims about other conditions rest on traditional use or preclinical work only.

Dosage

No established dose for nirgundi was identified in the available sources. The two human studies both used topical application: Nirgundi Taila applied for 20 minutes twice daily for 60 days (JRTM), or Vitex negundo oil delivered by phonophoresis over two weeks (conference abstract). These are study regimens, not recommendations: and neither tested an oral preparation. Without pharmacopoeial dosing guidance or dose-finding trials in the sources reviewed, this article does not present a recommended dose.

Safety & contraindications

A toxicology review notes that human safety data for Vitex negundo are sparse and that rodent findings cannot be used to establish human safety (sciendo review). A 2026 review of the plant's phytochemistry and pharmacology reports a high oral LD50 in rodents, no major organ toxicity in subacute or subchronic studies, and only mild, reversible changes at very high doses: animal findings, not a human safety profile (IJSAT 2026 review). The same review records traditional cautions against internal use during pregnancy (IJSAT 2026 review). The interaction literature for nirgundi with prescription joint medicines is essentially absent, so clinician guidance is the safe route if you take other medications.

FAQs

What is nirgundi used for traditionally?

Nirgundi is the leaf of Vitex negundo, used classically for joint disorders, low back pain, osteoarthritis, rheumatoid arthritis, and sciatica, with leaf fomentations or poultices applied for sprains, swellings, and wounds (WJPR review). These are traditional uses, not proven clinical effects.

Does nirgundi help knee osteoarthritis?

The evidence is weak but suggestive for topical use: a small randomized trial (n=32) found Vitex negundo oil phonophoresis slightly outperformed diclofenac phonophoresis over two weeks, and an open-label study (n=21) reported mild improvement with topical Nirgundi Taila over 60 days. Neither study was placebo-controlled, and neither tested oral nirgundi (conference abstract; JRTM).

What part of the nirgundi plant is used?

The leaf is the pharmacopoeial part, and medicated preparations such as Nirgundi Taila (oil) are used topically (Think India Quarterly API table; JRTM).

Is nirgundi safe?

Human safety data are sparse; animal studies show low acute toxicity but cannot establish human safety (sciendo review). Traditional cautions advise against internal use during pregnancy (IJSAT 2026 review).

Can I take nirgundi with arthritis medicines?

Interactions with prescription joint medicines have not been studied. Do not combine without talking to your clinician.

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.