Herbs (Global Traditional) · Ayurveda
Suvarchala (Tribulus terrestris) (Tribulus terrestris)
Moderate Evidencebotanical
Hermetica Superfood Encyclopedia
Tribulus terrestris (Suvarchala) contains steroidal saponins, primarily protodioscin, which may influence luteinizing hormone release and nitric oxide pathways. This Ayurvedic herb has been traditionally used for urinary and reproductive health support.
Suvarchala (Tribulus terrestris) is a perennial herb from the Zygophyllaceae family native to warm temperate and tropical regions worldwide, including Europe, Asia, Africa, and Australia. The plant is harvested from wild or cultivated sources, with fruits and aerial parts primarily used medicinally, extracted using methanol, chloroform, water, or column chromatography methods to isolate bioactive compounds.
The research dossier reveals no human clinical trials, RCTs, or meta-analyses for Tribulus terrestris were found in the available sources. Current literature focuses solely on phytochemical and pharmacological reviews without citing human trial designs, sample sizes, or clinical outcomes.
No clinically studied dosage ranges have been established for Tribulus terrestris extracts, powder, or standardized forms. The available research only provides compound concentrations in raw plant parts (e.g., tribestin 0.9–3.4 mg/100g in fruits) without therapeutic dose recommendations. Consult a healthcare provider before starting any new supplement.
Tribulus terrestris (Gokshura/Suvarchala) is not consumed as a food for macronutrient value but is valued for its bioactive phytochemical profile. Key compounds include: **Steroidal saponins (furostanol type):** primarily protodioscin (0.5–1.5% of dry weight in fruit/aerial parts, up to 45–55% of total saponin fraction in high-quality extracts), protogracillin, dioscin, diosgenin (aglycone), and terrestrosins A–E. Protodioscin is considered the principal active marker compound. **Flavonoids:** kaempferol, kaempferol-3-glucoside, kaempferol-3-rutinoside, quercetin, quercetin-3-rutinoside (rutin), and isorhamnetin glycosides (approximately 0.02–0.12% dry weight). **Alkaloids:** harmine and harman (beta-carboline alkaloids, trace amounts ~0.01–0.05%). **Lignanamides:** tribulusamides A and B (found in fruits). **Phytosterols:** beta-sitosterol, stigmasterol, campesterol (collectively ~0.1–0.3% dry weight). **Fatty acids (in seeds):** linoleic acid, oleic acid, palmitic acid, stearic acid. **Minerals (per 100g dry herb, approximate):** potassium (1.2–2.5%), calcium (0.8–1.5%), magnesium (0.3–0.6%), iron (15–40 mg), zinc (3–8 mg), phosphorus (0.2–0.5%). **Vitamins:** ascorbic acid (trace amounts in fresh aerial parts), small amounts of vitamin E (tocopherols in seed oil). **Other compounds:** citric acid, tannins (~2–4%), resin, essential oil (trace), and polysaccharides. **Bioavailability notes:** Protodioscin has moderate oral bioavailability; it is hydrolyzed by gut microflora to diosgenin (the aglycone), which is the absorbed active form. Saponin absorption is enhanced when taken with meals containing dietary fat. Standardized extracts typically guarantee 40–60% saponins (calculated as protodioscin). Phytosterol absorption is inherently low (~5–10%) and competes with cholesterol uptake. Flavonoid glycosides undergo deglycosylation in the gut prior to absorption. The composition varies significantly by plant part (fruit > leaf > root for saponin content) and geographic origin (Bulgarian and Indian chemotypes tend to have higher protodioscin concentrations than East Asian varieties).
Tribulus terrestris contains steroidal saponins, particularly protodioscin, which may stimulate luteinizing hormone release from the pituitary gland. The herb's compounds may also enhance nitric oxide synthase activity, potentially affecting vascular function. Traditional diuretic effects may involve increased sodium excretion through kidney tubules.
Most research on Tribulus terrestris consists of small-scale studies with mixed results. A few randomized controlled trials in men showed minimal effects on testosterone levels, with studies typically involving 20-60 participants over 4-8 weeks. Some animal studies suggest potential benefits for sexual function, but human evidence remains limited. The majority of evidence supporting its traditional uses comes from observational studies and historical documentation rather than rigorous clinical trials.
Tribulus terrestris is generally well-tolerated in healthy adults at typical doses of 250-1500mg daily. Potential side effects include stomach upset, sleep disturbances, and increased menstrual bleeding in women. It may interact with diabetes medications by affecting blood sugar levels and could enhance the effects of blood pressure medications. Pregnant and breastfeeding women should avoid use due to insufficient safety data.
