Shirish (Albizia lebbeck)

Albizia lebbeck is an Ayurvedic tree whose bark and leaves contain saponins and flavonoids with demonstrated antimalarial and anticancer properties. The saponin fraction exhibits cytotoxic effects against breast cancer cells while whole plant extracts show activity against malaria parasites.

Origin & History

Shirish (Albizia lebbeck) is a deciduous tree native to tropical and subtropical regions, particularly India, where it has been used in traditional Ayurvedic medicine. The medicinal parts include bark, leaves, seeds, and roots, with extracts commonly prepared via Soxhlet extraction using ethanol or methanol.

Historical & Cultural Context

Albizia lebbeck has been used for centuries in Ayurvedic medicine for respiratory disorders, skin conditions, gastrointestinal issues, oral disorders, eye and urinary problems, snakebites, and as an antivenom. It is also utilized in other global traditional systems for anti-inflammatory, antidiabetic, wound healing, and antiallergic purposes.

Health Benefits

• Antimalarial activity demonstrated in mouse studies with ED50 <100 mg/kg against Plasmodium berghei (PMID: 26905234) - preliminary evidence
• Anticancer effects observed in MCF-7 breast cancer cells with IC50 1 µg/ml saponin fraction (PMID: 30408535) - preliminary evidence
• Neuroprotective effects against cisplatin-induced peripheral neuropathy in mice at 200-400 mg/kg (PMID: 40974554) - preliminary evidence
• Anti-allergic activity through histamine and cytokine release inhibition from mast cells (IC50 85 µg/ml) - preliminary evidence
• Antimicrobial properties demonstrated through various phytochemicals including saponins and flavonoids - preliminary evidence

How It Works

Albizia lebbeck's saponin compounds induce apoptosis in cancer cells through cytotoxic mechanisms, achieving IC50 values of 1 µg/ml in MCF-7 breast cancer cells. The plant's antimalarial activity appears to target Plasmodium parasites directly, with effective doses below 100 mg/kg in animal models. Additional flavonoid compounds may contribute to neuroprotective effects through antioxidant pathways.

Scientific Research

Evidence for Shirish is limited to preclinical studies with no human clinical trials identified. Key animal studies include antimalarial effects in BALB/c mice (PMID: 26905234), anticancer activity in MCF-7 cells and chick embryo models (PMID: 30408535), and neuroprotection against glutamate toxicity in HMC3 microglial cells and cisplatin neuropathy in mice (PMID: 40974554).

Clinical Summary

Research on Albizia lebbeck remains in preliminary stages with only in vitro and animal studies available. Mouse studies demonstrated antimalarial efficacy with ED50 values <100 mg/kg against Plasmodium berghei parasites. Laboratory studies showed the saponin fraction achieved IC50 1 µg/ml cytotoxicity against MCF-7 breast cancer cells. No human clinical trials have been conducted to establish safety or efficacy profiles in humans.

Nutritional Profile

Shirish (Albizia lebbeck) is a medicinal plant rather than a dietary food source; its nutritional composition reflects its use as a bark, seed, pod, and leaf extract in Ayurvedic practice rather than macronutrient consumption. Key bioactive compounds include: (1) Saponins — macrocyclic triterpene saponins (lebbeckaside, albizziasaponins A–E) concentrated in bark and seeds, with saponin fractions showing bioactivity at IC50 ~1 µg/ml in cancer cell lines; (2) Flavonoids — quercetin, luteolin, and kaempferol glycosides identified in leaf and bark extracts; (3) Alkaloids — trace amounts including julibrosine-type alkaloids found in seeds; (4) Tannins — condensed and hydrolysable tannins present in bark (estimated 8–12% in dried bark by weight in phytochemical screenings); (5) Phenolic acids — gallic acid and ellagic acid derivatives; (6) Fixed oils in seeds containing oleic acid (~30%), linoleic acid (~20%), and palmitic acid (~15%) as primary fatty acids; (7) Crude protein in seeds approximately 25–30% dry weight, with amino acids including lysine, arginine, and leucine; (8) Crude fiber in pods approximately 15–20% dry weight; (9) Minerals detected in leaf and bark: calcium, potassium, magnesium, and iron in moderate quantities (specific concentrations vary by extraction method and plant part). Bioavailability note: Saponins may form complexes with cholesterol and bile acids in the gut, limiting direct absorption but enabling local GI activity; flavonoid glycosides require gut microbial deglycosylation for aglycone absorption; most pharmacological data derives from hydroalcoholic or aqueous extracts at doses of 200–400 mg/kg in rodent models, and human bioavailability data remains unpublished.

Preparation & Dosage

Preclinical studies used: ethanolic bark extract 100-1000 mg/kg orally in mice for antimalarial effects; leaf extract 200-400 mg/kg orally for neuroprotection; saponin fractions 0.1-1 µg/ml in vitro for anticancer effects. No human dosage data available. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Ashwagandha, Turmeric, Boswellia, Guduchi, Tulsi

Safety & Interactions

Safety data for Albizia lebbeck in humans is limited due to lack of clinical trials. Traditional Ayurvedic use suggests general tolerability, but potential side effects and optimal dosing remain undefined. The plant may interact with antimalarial medications or chemotherapy drugs due to its bioactive compounds. Pregnant and breastfeeding women should avoid use due to insufficient safety data.