500 mg · gluten-free · 60 caps
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Milk Thistle Phytosome (Siliphos / IdB 1016) is a complex of silybin — the most bioactive flavonolignan in milk thistle — bound to phosphatidylcholine. This molecular complex increases intestinal absorption and liver delivery 4–10-fold compared to standard silymarin.
Silybin acts as a free-radical scavenger, iron chelator, and membrane stabiliser in hepatocytes. It inhibits NF-κB-driven inflammation, reduces lipid peroxidation, and stimulates hepatocyte protein synthesis. The phosphatidylcholine complex dramatically improves oral bioavailability, achieving liver-relevant plasma concentrations.
Adults with NAFLD/NASH, chronic hepatitis, alcoholic liver disease, or those exposed to hepatotoxic medications and environmental toxins. Particularly beneficial when standard silymarin has failed.
Pregnant or breastfeeding women; people with known allergy to milk thistle or soy (phosphatidylcholine source); those on drugs metabolised by CYP2C9 or UGT1A1 without medical supervision. Side effects: Very well tolerated; mild laxative effect or stomach upset at high doses. Rare allergic reactions in those sensitive to Asteraceae plants.
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: PMID 8225695 (pilot study on liver protective effect of IdB1016 in chronic active hepatitis), PMID 2088770 (pharmacokinetic studies on IdB 1016 — 4–10x bioavailability vs silymarin), PMC6155865 (review of silymarin/silybin in chronic liver disease and NAFLD)
SacredBod's longer take on Milk Thistle Phytosome — context the structured blocks above don't capture.
Milk Thistle Phytosome — commercially known as Siliphos® or IdB 1016 — is a patented molecular complex developed by Indena (Italy) in which silybin (the primary active flavonolignan of milk thistle) is bound to phosphatidylcholine in a 1:1 ratio. Standard silymarin extracts have poor oral bioavailability (<20–50% absorption) because silybin is highly lipophobic. The phytosome technology transforms silybin into a lipid-compatible complex that crosses intestinal membranes efficiently, achieving plasma levels 4–10 times higher than uncomplexed silymarin. In India, true Siliphos capsules are scarce; most products are standard silymarin (e.g., Carbamide Forte, HealthVit) or imported silybin-phytosome complexes like Enzymatic Therapy Silybin Advanced.
Silybin is a potent free-radical scavenger, iron chelator, and membrane stabiliser. It inhibits NF-κB activation, reduces Kupffer cell-mediated inflammation, and stimulates ribosomal RNA polymerase I — promoting hepatocyte protein synthesis and regeneration. The phytosome complex ensures these mechanisms operate at clinically relevant tissue concentrations. In a landmark pharmacokinetic study, 9 healthy volunteers receiving IdB 1016 (360 mg silybin equivalent) showed plasma silybin levels consistently higher than those receiving equivalent doses of standard silymarin at all time points. A pilot RCT in 20 patients with chronic active hepatitis demonstrated that 240 mg silybin b.i.d. (as IdB 1016) significantly reduced AST (−25%), ALT (−29%), GGT (−20%) and total bilirubin (−30%) within just 7 days.
Adults with NAFLD/NASH, chronic viral or alcoholic hepatitis, cirrhosis, or those on hepatotoxic medications (e.g., statins, acetaminophen, anti-tubercular drugs) seeking superior liver protection. It is particularly valuable when standard silymarin has produced insufficient results. Not a substitute for antiviral therapy in hepatitis B/C.
Extremely well tolerated. At very high doses (15–20 g/day), mild asymptomatic hyperbilirubinaemia may occur due to UGT1A1 inhibition — this resolves upon cessation. Theoretical interactions with warfarin and CYP2C9 substrates exist but are not clinically significant at standard doses.
True Siliphos is not manufactured in India and is available only as imports (Thorne Research, Enzymatic Therapy) at premium prices (₹2,500–₹5,000 for 60–90 capsules). The domestic market is dominated by standard silymarin 400 mg capsules from Carbamide Forte, HealthVit and Himalaya (₹300–₹600). Milk thistle is cultivated in Kashmir but most commercial extract is imported. It is not a scheduled drug. For Indian consumers unable to source phytosome, high-dose standard silymarin (600 mg/day) combined with Picrorhiza kurroa (Kutki) offers a domestic alternative with comparable traditional hepatoprotective credentials.
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