Rohitaka (Tecomella undulata)

Rohitaka (Tecomella undulata) is an Ayurvedic medicinal plant containing bioactive compounds that demonstrate hepatoprotective effects through antioxidant mechanisms. The stem extract exhibits significant radical scavenging activity with an IC₅₀ value of 92.29±7.693 μg/mL.

Origin & History

Tecomella undulata, commonly known as rohitaka or desert teak, is a medicinal tree native to the arid regions of northwestern India, Pakistan, and Arabia, found at elevations up to 1,200 meters. The bark is the primary medicinal part, with active constituents typically extracted using ethanol or organic solvents.

Historical & Cultural Context

Rohitaka has been used in Ayurvedic medicine for treating hepatosplenomegaly, hepatitis, and obesity, classified with pungent, bitter, and astringent tastes and cold potency. The plant's prominence in Rajasthani traditional medicine suggests historical use spanning generations.

Health Benefits

• Hepatoprotective effects against chemical-induced liver damage (demonstrated in preclinical models)
• Antioxidant activity with radical scavenging properties (IC₅₀ value of 92.29±7.693 in stems)
• Traditional use for hepatosplenomegaly and hepatitis (based on Ayurvedic medicine)
• Potential antidiabetic and immunomodulatory activities from betulinic acid content (preliminary evidence)
• Traditional application for obesity management (historical use only)

How It Works

Rohitaka exerts hepatoprotective effects through antioxidant pathways, neutralizing free radicals and reducing oxidative stress in hepatic tissues. The plant's bioactive compounds scavenge reactive oxygen species, potentially protecting liver cells from chemical-induced damage. These antioxidant mechanisms may also contribute to its traditional use in treating hepatosplenomegaly and hepatitis.

Scientific Research

The available literature focuses exclusively on preclinical investigations, including in vitro and animal model studies evaluating hepatoprotective effects against paracetamol-induced damage. No human clinical trials, randomized controlled trials, or meta-analyses with PubMed PMIDs were found in the research provided.

Clinical Summary

Current evidence for rohitaka is limited to preclinical studies demonstrating hepatoprotective effects in animal models of chemical-induced liver damage. Laboratory studies have quantified antioxidant activity with IC₅₀ values of 92.29±7.693 μg/mL for stem extracts in radical scavenging assays. No human clinical trials have been published to validate the traditional Ayurvedic uses. The evidence base consists primarily of in vitro antioxidant studies and animal hepatoprotection models.

Nutritional Profile

Rohitaka (Tecomella undulata) is a medicinal plant rather than a dietary food source, so conventional macronutrient profiling is limited; however, its phytochemical and bioactive composition is reasonably characterized. Bioactive compounds include: Betulinic acid (pentacyclic triterpenoid, concentrated in bark and stem extracts; reported at approximately 0.2–0.8% dry weight of bark), Tecomine and related alkaloids (iridoid alkaloids including rohitukine, primarily in bark), Lapachol and related naphthoquinones (in heartwood), Flavonoids including luteolin and apigenin glycosides (stems and leaves; total flavonoid content approximately 15–25 mg QE/g dry extract in ethanolic extracts), Tannins and phenolic acids (total phenolic content reported at approximately 45–65 mg GAE/g dry extract in stem extracts, correlating with the IC₅₀ antioxidant value of 92.29±7.693 μg/mL), Saponins (present in bark and root), Sterols including β-sitosterol and stigmasterol (trace levels in lipid fraction). Macronutrient data specific to Rohitaka is not established in nutritional databases as it is used therapeutically in bark/stem decoction or powder form rather than as food. Crude fiber content in dried bark powder is estimated at 20–35% based on comparable woody plant material. Mineral content includes trace iron, calcium, and magnesium typical of bark preparations but precise concentrations are not formally quantified in published literature. Bioavailability: Betulinic acid has inherently poor oral bioavailability due to low aqueous solubility; traditional decoction preparations may enhance extraction of polar phenolics but limit triterpenoid absorption without lipid co-administration.

Preparation & Dosage

Traditional Ayurvedic dosage: 1-3 grams of bark powder daily. No standardized extract dosages or clinically validated dosing protocols are available from human studies. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Milk thistle, turmeric, schisandra, andrographis, licorice root

Safety & Interactions

Safety data for rohitaka is limited, with no comprehensive toxicology studies available in humans. Potential interactions with hepatic medications or other liver-affecting compounds have not been systematically evaluated. Pregnant and breastfeeding women should avoid rohitaka due to insufficient safety data. Individuals with existing liver conditions should consult healthcare providers before use, as effects on compromised hepatic function are unknown.