Named Bioactive Compounds · Other
Guggulsterone
Moderate Evidencecompound
Hermetica Superfood Encyclopedia
Guggulsterone is a plant steroid extracted from Commiphora mukul resin that inhibits the NF-κB inflammatory pathway and affects cholesterol metabolism. Preclinical studies show it may induce cancer cell apoptosis and reduce inflammatory markers, though human evidence remains limited.
Guggulsterone is a phytosteroid derived from the oleo-gum resin of Commiphora wightii, a critically endangered tree native to arid regions of India and Pakistan. The resin (guggul gum) is extracted by making incisions in the tree bark and collecting the exudate, which is then processed into standardized extracts containing 2.5% E- and Z-guggulsterone isomers.
The primary human evidence comes from a double-blind RCT (n=103) testing guggulipid at 1,500-3,000 mg/day for hyperlipidemia, which unexpectedly showed LDL-C increases of 9-10% vs. placebo (PMID: 12915429). A 2023 systematic review analyzed 40 articles on anti-cancer activity but included only cell line studies, no human trials (PMID: 37201024). No large-scale RCTs or meta-analyses support clinical benefits.
Clinically studied doses use guggulipid standardized to 2.5% guggulsterones: standard dose ~1,500 mg/day (providing ~37.5 mg guggulsterones) or high dose ~3,000 mg/day (~75 mg guggulsterones), divided 2-3 times daily. Only 8-week safety data available from clinical trials. Consult a healthcare provider before starting any new supplement.
Guggulsterone is not a food or nutrient but a plant steroid (phytosteroid) isolated from the oleogum resin (guggul) of the Commiphora mukul tree. It exists primarily as two stereoisomers: Z-guggulsterone and E-guggulsterone, with the Z-isomer generally considered more bioactive. Key bioactive compounds in guggul resin include: guggulsterone (Z and E forms, typically 1.0-5.0% w/w of purified guggul extract standardized as 'gugulipid'), guggulsterols I–V, myrrhanol A, and various lignans (guggullignan I and II). Commercial gugulipid supplements are typically standardized to 2.5-10% guggulsterones (E and Z combined), with common dosing in studies at 25-75 mg guggulsterones per day (derived from ~500-2000 mg guggul extract). Guggulsterone has a molecular weight of ~312.45 g/mol (C21H28O2) and functions as a farnesoid X receptor (FXR) antagonist and modulator of nuclear receptors including pregnane X receptor (PXR), bile salt export pump (BSEP), and steroid receptors. It contains no meaningful macronutrients (protein, carbohydrate, fat, fiber), vitamins, or minerals in supplemental doses. Bioavailability is relatively low due to poor aqueous solubility and significant first-pass hepatic metabolism; oral bioavailability estimated at <5-10% in animal pharmacokinetic models. Peak plasma concentrations are reached approximately 1-3 hours post-oral administration. The compound undergoes Phase I (CYP3A4-mediated oxidation) and Phase II (glucuronidation and sulfation) metabolism. Lipid-based or nanoparticle formulations have been explored to enhance bioavailability (up to 3-5 fold improvement in AUC in preclinical models). Guggul resin also contains minor amounts of essential oils (myrcene, dimyrcene, eugenol) and diterpenes, which may contribute to overall bioactivity of crude extracts but are distinct from purified guggulsterone.
Guggulsterone primarily inhibits the NF-κB signaling pathway, reducing inflammatory cytokine production including TNF-α. It also modulates cholesterol metabolism through interactions with farnesoid X receptor (FXR) and affects steroid hormone pathways. The compound induces apoptosis in cancer cells through mitochondrial dysfunction and caspase activation.
Current evidence for guggulsterone is primarily from preclinical cell culture and animal studies. Cancer research shows 3.98-11.17x increased apoptosis rates across multiple cancer cell lines at concentrations of 1-25 μM. Anti-inflammatory effects have been demonstrated in vitro with significant TNF-α reduction, but human clinical trials are lacking. Traditional cholesterol-lowering claims require validation through properly controlled human studies.
Guggulsterone may interact with thyroid medications and blood thinners due to its steroid structure and metabolic effects. Common side effects in traditional use include gastrointestinal upset, headaches, and potential thyroid stimulation. Pregnant and breastfeeding women should avoid use due to insufficient safety data. Individuals with hormone-sensitive conditions should consult healthcare providers before supplementation.
