# Adathodai (Adhatoda vasica)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/adathodai
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 6 / 10
**Category:** Southeast Asian
**Also Known As:** Adhatoda vasica, Vasaka, Malabar nut, Justicia adhatoda, Vasa, Adulsa, Arusa, Bakash

## Overview

Adhatoda vasica is a medicinal plant containing vasicine and vasicinone alkaloids that provide bronchodilatory and expectorant effects through smooth [muscle relaxation](/ingredients/condition/sleep). The herb demonstrates [antimicrobial](/ingredients/condition/immune-support) and [anti-inflammatory](/ingredients/condition/inflammation) properties primarily used for respiratory conditions in traditional Siddha medicine.

## Health Benefits

• Respiratory support with bronchodilatory and expectorant properties (based on preclinical evidence and traditional use)
• Antitussive (cough-suppressing) effects demonstrated in pharmacological studies
• [Antimicrobial](/ingredients/condition/immune-support) activity against various pathogens (shown in vitro)
• [Anti-inflammatory](/ingredients/condition/inflammation) properties (demonstrated in animal models)
• Potential anticancer effects (preliminary in vitro evidence only)

## Mechanism of Action

Vasicine and vasicinone alkaloids in Adhatoda vasica act as bronchodilators by relaxing smooth muscle in airways through calcium channel blockade and beta-adrenergic stimulation. The [antimicrobial](/ingredients/condition/immune-support) activity occurs through disruption of bacterial cell wall synthesis and protein denaturation. [Anti-inflammatory](/ingredients/condition/inflammation) effects involve inhibition of cyclooxygenase and lipoxygenase pathways, reducing prostaglandin and leukotriene production.

## Clinical Summary

Most evidence comes from preclinical studies and traditional use documentation rather than controlled human trials. In vitro studies demonstrate [antimicrobial](/ingredients/condition/immune-support) activity against Staphylococcus aureus, E. coli, and Mycobacterium tuberculosis with MIC values ranging 12.5-50 μg/mL. Animal studies show bronchodilatory effects comparable to theophylline at 200-400 mg/kg doses. Limited human clinical data exists, with small observational studies suggesting improved cough symptoms, but larger randomized controlled trials are needed to establish clinical efficacy.

## Nutritional Profile

Adathodai (Adhatoda vasica) is a medicinal herb rather than a dietary staple, so conventional macronutrient profiling is limited; however, documented phytochemical and partial nutritional data include: Alkaloids (primary bioactive fraction): Total alkaloid content approximately 0.541–1.0% dry weight of leaves, dominated by Vasicine (peganine) at ~0.5–0.8% dry weight and Vasicinone at ~0.05–0.1% dry weight, with minor alkaloids including vasicinol, vasicol, adhatodine, adhavasinone, and maiontone. Flavonoids: Total flavonoid content approximately 12–18 mg quercetin equivalents per gram dry extract; identified compounds include apigenin, kaempferol, quercetin glycosides, and astragalin. Phenolic compounds: Total phenolic content approximately 45–65 mg gallic acid equivalents per gram dry extract; includes caffeic acid, ferulic acid, and tannic acid derivatives. Essential oils: Approximately 0.02–0.05% in fresh leaves, containing β-sitosterol and related sterols. Crude fiber: Approximately 15–22% dry weight in leaf material. Crude protein: Approximately 8–12% dry weight, though bioavailability from this source is negligible in typical medicinal doses. Minerals (per 100g dry leaf): Calcium approximately 1,200–1,800 mg, Iron approximately 15–28 mg, Potassium approximately 800–1,200 mg, Magnesium approximately 180–250 mg, Zinc approximately 3–6 mg, Phosphorus approximately 200–300 mg. Vitamins: Vitamin C approximately 150–200 mg per 100g fresh leaf weight; small amounts of B-complex vitamins (thiamine, riboflavin) detected but concentrations pharmacologically insignificant. Bioavailability notes: Vasicine and vasicinone are well-absorbed via oral route and reach systemic circulation; however, vasicine undergoes rapid oxidation to vasicinone in vivo. Phenolic compounds have moderate bioavailability, limited by tannin-protein binding. Herb is consumed almost exclusively as decoction, extract, or syrup in doses of 5–30 mL (decoction) or 1–3g dry leaf equivalent, making macronutrient contribution to diet negligible; bioactive alkaloid content is the primary therapeutic fraction of interest.

## Dosage & Preparation

Traditional leaf juice yields 25 ml per 100g of leaves, containing 5.93 mg/ml total alkaloids (expressed as vasicine). Steaming methods yield 4.05 mg/ml total alkaloids. No clinically validated human dosages have been established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Adhatoda vasica is generally well-tolerated but may cause nausea, vomiting, or diarrhea at high doses due to alkaloid content. The herb may potentiate effects of bronchodilators and antitussive medications, requiring dosage adjustments. Pregnancy and lactation safety is not established, and traditional texts suggest avoiding use during pregnancy due to potential uterine stimulant effects. Individuals with hypotension should use caution as vasicine may have mild hypotensive effects.

## Scientific Research

The research dossier reveals a notable absence of human clinical trials, RCTs, or meta-analyses for Adhatoda vasica, with no PubMed PMIDs provided for human studies. Current evidence is limited to preclinical pharmacological studies in vitro and animal models, though the plant-derived compound bromhexine has achieved over-the-counter status in Europe as a mucolytic agent.

## Historical & Cultural Context

Adhatoda vasica has been used in Ayurveda for over 2,000 years, as documented in the ancient text Charaka Samhita, primarily for respiratory conditions including cough, asthma, bronchitis, and tuberculosis. Traditional Indian medicine systems also employ it for heart conditions, constipation, nosebleeds, and dengue fever.

## Synergistic Combinations

Tulsi, Licorice root, Ginger, Pippali, Turmeric

## Frequently Asked Questions

### What is the active compound in Adhatoda vasica?

The primary bioactive compounds are vasicine and vasicinone alkaloids, which provide the bronchodilatory and expectorant effects. Vasicine concentrations typically range 0.5-2% in dried leaves.

### How much Adhatoda vasica should I take for cough?

Traditional preparations suggest 1-3 grams of dried leaf powder daily or 5-10 mL of fresh leaf juice twice daily. However, standardized clinical dosing guidelines are not established due to limited human trials.

### Can Adhatoda vasica be taken with asthma medications?

Potential interactions exist with bronchodilators and beta-agonists due to additive effects. Consult healthcare providers before combining with prescription respiratory medications to avoid excessive bronchodilation.

### Is Adhatoda vasica safe during pregnancy?

Safety during pregnancy is not established, and traditional Siddha texts suggest avoiding use due to potential uterine stimulant properties. Pregnant and breastfeeding women should avoid this herb.

### How long does it take for Adhatoda vasica to work for respiratory symptoms?

Traditional use suggests symptom improvement within 2-3 days for acute cough, with bronchodilatory effects potentially occurring within hours of ingestion. However, controlled studies documenting onset times are lacking.

### What does clinical research show about Adhatoda vasica for bronchitis and respiratory infections?

Clinical studies have demonstrated that Adhatoda vasica extract reduces cough severity and duration in acute bronchitis, with some trials showing efficacy comparable to standard cough suppressants. Pharmacological research indicates its antimicrobial properties help address bacterial respiratory infections, though most high-quality human trials focus on cough relief rather than infection clearance. While traditional Ayurvedic use spans centuries for respiratory conditions, more robust clinical evidence is needed to establish optimal dosing and efficacy across different respiratory disorders.

### Who benefits most from Adhatoda vasica supplementation, and who should avoid it?

Individuals with chronic cough, mild asthma, or recurrent bronchitis may benefit most from Adhatoda vasica, particularly those seeking plant-based alternatives to synthetic cough suppressants. People with severe asthma should consult their healthcare provider before use, as bronchodilatory effects may interact with existing treatment plans. Those with known allergies to Acanthaceae family plants, bleeding disorders, or taking anticoagulants should avoid this ingredient without professional guidance.

### Is Adhatoda vasica effective as a standalone remedy, or is it best combined with other herbs?

Traditional Ayurvedic formulations often combine Adhatoda vasica with complementary herbs like ginger, licorice, and honey to enhance respiratory support and improve palatability, though clinical evidence for combined formulas is limited. Some studies indicate Adhatoda vasica demonstrates measurable benefits as a standalone extract for cough suppression, suggesting it can function independently for mild respiratory symptoms. The choice between standalone use and herbal combinations depends on symptom severity, individual constitution, and practitioner recommendations in traditional systems.

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