25 mg · vegan · gluten-free · 60 caps
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Standardised guggulsterones are the bioactive ketosteroids (E and Z isomers) extracted from the resin of Commiphora mukul (guggul). Unlike raw guggul powder, standardised extracts guarantee a minimum guggulsterone content — typically 2.5 % — for consistent thyroid and metabolic activity.
Guggulsterones act as selective bile acid receptor modulators, particularly on TGR5 and FXR. Activation of TGR5 upregulates type 2 deiodinase (DIO2), increasing peripheral conversion of inactive T4 to active T3. They also stimulate thyroid hormone receptor β1 signalling in hepatocytes, enhancing metabolic rate and lipid clearance.
Individuals with subclinical hypothyroidism seeking metabolic support, those with elevated cholesterol wanting dual thyroid-lipid benefits, and people interested in Ayurvedic thyroid adjuvants with modern standardisation.
Avoid during pregnancy, breastfeeding and in active hyperthyroidism. Use caution in hormone-sensitive conditions. Side effects: Generally well tolerated; occasional mild gastrointestinal upset, skin rash or headache. Rare reports of thyroid overstimulation in sensitive individuals.
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: PMID 10503949 (Panda 1999 — gugulu induces triiodothyronine production in mice via lipid peroxidation modulation), PMID PMC6473927 (guggulsterone activates adipocyte beiging through TGR5-mediated DIO2 upregulation and T3 synthesis), PMID PMC4114705 (guggulsterone regulates BSEP expression and synergises with bile acids)
SacredBod's longer take on Guggulsterones E and Z — context the structured blocks above don't capture.
Guggulsterones E and Z provides the two bioactive ketosteroid isomers — trans (E) and cis (Z) — that constitute the pharmacologically active fraction of Commiphora mukul resin. In Ayurveda, raw guggul (Guggulu) has been used for millennia as a Medohara (fat-reducing) and Kaphahara (mucus-clearing) agent. Modern extraction technology now allows standardisation to 2.5 % guggulsterone content, ensuring each capsule delivers a consistent, clinically relevant dose of the compounds responsible for metabolic and thyroid effects.
| Goal | Dose | Timing |
|---|---|---|
| Metabolic / thyroid support | 25 mg guggulsterones twice daily | With breakfast and dinner |
| Lipid management | 25–50 mg guggulsterones daily | Divided doses with meals |
Each 400 mg capsule of 2.5 % extract provides ~10 mg guggulsterones; two to three capsules are needed to reach the 25 mg target. Take with meals containing some fat to improve absorption of these lipophilic sterones.
Guggulsterones are generally safe at standardised doses. Mild GI upset and skin rash are the most common side effects. Because guggulsterones may increase thyroid hormone activity, they should not be combined with levothyroxine or liothyronine without endocrinological supervision. They may also enhance the metabolism of certain drugs metabolised by CYP3A4.
In Ayurveda, Guggulu is classified as Tikshna (sharp), Laghu (light) and Ruksha (dry), with a Katu (pungent) taste and Katu post-digestive effect. It is a primary ingredient in dozens of classical formulations including Triphala Guggulu, Kanchanara Guggulu and Yograj Guggulu. Charaka prescribed it for Medoroga (obesity/metabolic syndrome), Vatavyadhi (neuromuscular disorders) and Gulma (abdominal masses). The modern discovery that guggulsterones upregulate T3 production provides a molecular basis for the classical observation that Guggulu “kindles the digestive fire” (Agni Deepana) and reduces Kapha-Meda (fat tissue).
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