Guduchi / Giloy
Tinospora cordifolia
Description
overall appearance
Large, deciduous climbing vine reaching 10–30 m in length, clinging to host trees with aerial roots. Stems are succulent, fleshy, and conspicuously papery-corky with distinctive lenticels. One of the most celebrated Ayurvedic herbs, called 'Amrita' (divine nectar) in classical texts for its rejuvenating properties.
roots
Extensive adventitious aerial roots hanging from stems; cord-like, fleshy; long tap roots in soil; white-cream color; produce mucilage when cut
stem
Fleshy, succulent, gray-green to brownish stems with distinctive papery, whitish, membranous bark peeling in thin layers; circular lenticels prominent; 0.5–2.5 cm diameter; contain starch-rich pith
leaves
Cordate (heart-shaped), 10–20 cm long and 8–15 cm wide; membranous and soft; bright green; long petioles 8–16 cm; 5–7 prominent palmate veins from base; alternate
flowers
Small, dioecious, greenish-yellow flowers 3–4 mm; female flowers solitary; male flowers in racemes 2–5 cm long; appear in summer
fruits/seeds
Small drupes in clusters; orange-red when ripe, 6–8 mm; pea-sized; 1 seed per drupe; curved horseshoe-shaped seed 5–7 mm
Active Compounds
Traditional Uses
- Ayurveda: Rasayana (rejuvenator) and Tridosha-balancing herb; classified as bitter tonic and immunomodulator in Charaka Samhita
- Ayurvedic treatment for chronic fever, malaria, and typhoid; Sanskrit name 'Jwarghna' means fever destroyer
- Traditional treatment for diabetes (Madhumeha) in Ayurveda; used continuously for thousands of years
- Ayurvedic liver tonic and treatment for jaundice, viral hepatitis, and liver disorders
- Rheumatoid arthritis treatment in Ayurveda (Amavata); anti-inflammatory and analgesic
- Immune system support in HIV/AIDS patients in Indian integrative medicine
- Urinary tract infections and urinary calculi in Ayurvedic practice
- Post-infectious convalescence tonic; rebuilds strength after chronic illness in traditional Indian medicine
Modern Applications
- Immunomodulation: arabinogalactan activates macrophages, dendritic cells, and NK cells; increases phagocytic activity 3–5 fold in vitro; standardized extracts used in immunotherapy protocols in India
- Antidiabetic: multiple animal studies show 30–40% blood glucose reduction; inhibits α-glucosidase and improves insulin sensitivity; small RCT in type 2 diabetics showed significant HbA1c reduction
- Anti-inflammatory: columbin and tinosporide inhibit COX-2, NF-κB, and TNF-α; comparable to prednisolone in carrageenan edema model in rats
- Hepatoprotection: standardized extract shows hepatoprotection against aflatoxin, paracetamol, and CCl4; used clinically in India for viral hepatitis
- Antioxidant: SOD, catalase, and GPx induction; significant DPPH radical scavenging
- Antimalarial: tinosporide, columbin active against Plasmodium falciparum in vitro; used as adjunct to antimalarial therapy
- Neuroprotection: berberine and palmatine reduce Aβ aggregation and neuroinflammation in Alzheimer's animal models
- COVID-19 adjunct therapy: ayush-64 formulation containing guduchi used in Indian ICMR-approved COVID trials; modestly reduced recovery time
⚠️ Safety Information
Contraindications
- Autoimmune diseases (lupus, MS, RA): immunostimulant activity may exacerbate autoimmune flares
- Pregnancy and lactation: insufficient safety data; immunological effects contraindicate use
- Pre-surgical period: discontinue 2 weeks before surgery; may interfere with blood glucose control under anesthesia
- Constipation: mild laxative activity; use cautiously in patients prone to loose stools
Side Effects
- Hypoglycemia especially when combined with antidiabetic medications
- Constipation or loose stools depending on individual constitution and dose
- Case reports of autoimmune hepatitis following guduchi supplementation (possible immune-mediated hepatotoxicity); FDA alert issued 2023
- Mild headache and sedation in sensitive individuals
Drug Interactions
- Immunosuppressants (cyclosporine, mycophenolate, corticosteroids): immunostimulant activity directly opposes these medications
- Antidiabetics (insulin, metformin, sulfonylureas): significant additive hypoglycemic effect; monitor blood glucose
- Anticoagulants (warfarin, heparin): antiplatelet activity may increase bleeding risk
- Lithium: potential alteration in renal clearance; monitor lithium levels
Parts Used
- Stems (primary use — most potent part)
- Roots
- Leaves
- Starch extract from stems (Giloy satva)
Preparation Methods
Stem decoction (Kwath): 15–30 g fresh stem or 3–6 g dried in 400 mL water, reduced to 100 mL; 50 mL twice daily
Standardized aqueous extract (polysaccharides 5%): 300–900 mg twice daily
Giloy Satva (starch extract): 0.5–1 g with honey or warm water twice daily
Tincture (1:5, 40% ethanol): 3–5 mL three times daily
Powder (churna): 3–6 g/day with warm water
Fresh stem juice: 10–20 mL twice daily (most bioavailable traditional form)
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