Home > Product > Plant Extract >> Milk thistle Seed Extract powder-US Stock ava ...
←Return Back

Milk thistle Seed Extract powder-US Stock available

  • Latin Name:   Silybum marianum (Linn.) Gaert
  • Synonyms:   Silybum marianum ,cardus marianus, milk thistle, blessed milk thistle, Marian Thistle, Mary Thistle, Saint Mary's Thistle, Mediterranean milk thistle, variegated thistle , Scotch thistle,Silymarin
  • Part of Used:   Seed
  • Specifications:   Silimarin 80% HPLC (Silybin 74% HPLC)/Silimarin 80% UV-VIS, Silybin 40% HPLC/Silimarin 80% UV-VIS, Silybin 30%HPLC,50:1 TLC
  • Appearance:   yellow fine powder
  • Application:   Medicine, food additive, dietary supplement,sports nutrition
Email: info@nutragreen.co.uk

Product name

Milk thistle Seed Extract powder

Latin Name

Silybum marianum (Linn.) Gaertn.

Active ingredients   



Silybum marianum ,cardus marianus, milk thistle, blessed milk thistle, Marian Thistle, Mary Thistle, Saint Mary's Thistle, Mediterranean milk thistle, variegated thistle , Scotch thistle,Silymarin


Yellow fine powder

Part used



10:1, Silymarin 46%,Silymarin 80% (USP)/Silimarin 80% HPLC, Silybin +Isosilybin 30% HPLC,50:1 TLC


160-400mg daily

Main benefits

Antioxidant, anticancer, liver protection, anti-diabetes

Applied industries

Medicine, food additive, dietary supplement, sports nutrition


What is Milk thistle Seed Extract powder?

Milk thistle is commonly found growing wild in a variety of settings, including roadsides. The Latin name is Silybum marianum. The seeds of the dried flower are used. The active ingredient in the plant is a flavonoid called silymarin, an antioxidant said to protect liver cells from toxins. Silymarin apparently promotes liver cell protein synthesis and decreases the oxidation of glutathione. The plant's flowers and seeds have been used for more than 2,000 years to treat disorders of the liver and gallbladder.

Milk thistle (Silybum marianum) has been used for 2,000 years as an herbal remedy for a variety of ailments, particularly liver, kidney, and gall bladder problems. Several scientific studies suggest that substances in milk thistle (especially a flavonoid called silymarin) protect the liver from toxins, including certain drugs such as acetaminophen (Tylenol), which can cause liver damage in high doses. Silymarin has antioxidant and anti-inflammatory properties, and it may help the liver repair itself by growing new cells.

Chemical constituents of Milk thistle Seed Extract powder

A flavanolignan complex, silymarin, was first isolated from the seeds in 1968. Silymarin (4–6% in ripe fruits) consists primarily of three flavanolignans, silybin (silibinin), silychristin (silichristin) and sylichristin B, and silidianin. Other flavanolignans include dehydrosilybin, 3-desoxysilichristin, deoxysilydianin (silymonin), siliandrin, silybinome, silyhermin, and neosilyhermin. Other constituents include taxifolin, apigenin, silybonol; a fixed oil (16–18%), consisting largely of linoleic and oleic acids, plus myristic, palmitic, and stearic acids; betaine hydrochloride, triamine, histamine, and others. The lanostane triterpene, marianine, and the triterepene glycosides, marianosides A and B were recently isolated from the whole plant.

Benefits of taking Milk thistle Seed Extract powder supplements:

Milk thistle and hepatitis

>Silibinin inhibits hepatitis C virus entry into hepatocytes by hindering clathrin-dependent trafficking.


UMR CNRS 5086, IBCP, Lyon, France; UMR Inserm U1052/CNRS 5286, Cancer Research Center of Lyon, University of Lyon, Lyon, France.


Hepatitis C virus (HCV) is a global health concern infecting 170 million people worldwide. Previous studies indicate that the extract from milk thistle known as silymarin and its main component silibinin inhibit HCV infection. Here we investigated the mechanism of anti-HCV action of silymarin-derived compounds at the molecular level. By using live-cell confocal imaging, single particle tracking, transmission electron microscopy and biochemical approaches on HCV-infected human hepatoma cells and primary hepatocytes, we show that silibinin potently inhibits HCV infection and hinders HCV entry by slowing down trafficking through clathrin-coated pits and vesicles. Detailed analyses revealed that silibinin altered the formation of both clathrin-coated pits and vesicles in cells and caused abnormal uptake and trafficking of transferrin, a well-known cargo of the clathrin endocytic pathway. Silibinin also inhibited infection by other viruses that enter cells by clathrin-mediated endocytosis including reovirus, vesicular stomatitis and influenza viruses. Our study demonstrates that silibinin inhibits HCV early steps of infection by affecting endosomal trafficking of virions. It provides new insights into the molecular mechanisms of action of silibinin against HCV entry and also suggests that silibinin is a potential broad-spectrum antiviral therapy.

>Silymarin for HCV infection.


Department of Laboratory Medicine, University of Washington, Seattle, WA, USA.


Silymarin, an extract of milk thistle seeds, and silymarin-derived compounds have been considered hepatoprotective since the plant was first described in ancient times. Hepatoprotection is defined as several non-mutually exclusive biological activities including antiviral, antioxidant, anti-inflammatory and immunomodulatory functions. Despite clear evidence for silymarin-induced hepatoprotection in cell culture and animal models, evidence for beneficial effects in humans has been equivocal. This review will summarize the current state of knowledge on silymarin in the context of HCV infection. The information was collated from a recent workshop on silibinin in Germany.

Milk thistle and antioxidant

>Silibinin protects H9c2 cardiac cells from oxidative stress and inhibits phenylephrine-induced hypertrophy: potential mechanisms.


Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, Dragana, Alexandroupolis 68100, Greece.


Cardiac hypertrophy is the main response of the heart to various extrinsic and intrinsic stimuli, and it is characterized by specific molecular and phenotypic changes. Recent in vitro and in vivo studies indicate the involvement of reactive oxygen species in the hypertrophic response. In this study, silibinin, a plant flavonolignan extracted from milk thistle with potent antioxidant activity, was evaluated for its effects in (a) preventing hydrogen peroxide (H2O2)-induced cellular damage and (b) blocking the phenylephrine-induced hypertrophic response. Using the in vitro model of embryonic rat heart-derived H9c2 cells, we showed that silibinin has a rather safe profile as concentrations up to 200μM did not affect cell viability. Pretreatment of H9c2 cells with silibinin resulted in better protection of H9c2 cells under conditions of H2O2-induced cellular stress compared to untreated cells as indicated by cell viability and DNA fragmentation assays. Furthermore, silibinin attenuated the phenylephrine-induced hypertrophic response as evidenced by the measurement of cell surface, up-regulation of atrial natriuretic peptide and increase of cellular protein levels. Moreover, silibinin repressed the phenylephrine-induced phosphorylation of ERK1/2 kinases, while it appeared to inhibit the weakly activated by phenylephrine phosphorylation of Akt. Based on our results, silibinin may attenuate the phenylephrine-induced hypertrophic response of H9c2 cells via antioxidant mechanisms involving mainly the inhibition of the intracellular signaling pathways mediated by ERK1/2 MAPKs and Akt.

Milk thistle and Anti-cancer

>Anti-cancer efficacy of silybin derivatives -- a structure-activity relationship.


Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA.


Silybin or silibinin, a flavonolignan isolated from Milk thistle seeds, is one of the popular dietary supplements and has been extensively studied for its antioxidant, hepatoprotective and anti-cancer properties. We have envisioned that potency of silybin could be further enhanced through suitable modification/s in its chemical structure. Accordingly, here, we synthesized and characterized a series of silybin derivatives namely 2,3-dehydrosilybin (DHS), 7-O-methylsilybin (7OM), 7-O-galloylsilybin (7OG), 7,23-disulphatesilybin (DSS), 7-O-palmitoylsilybin (7OP), and 23-O-palmitoylsilybin (23OP); and compared their anti-cancer efficacy using human bladder cancer HTB9, colon cancer HCT116 and prostate carcinoma PC3 cells. In all the 3 cell lines, DHS, 7OM and 7OG demonstrated better growth inhibitory effects and compared to silybin, while other silybin derivatives showed lesser or no efficacy. Next, we prepared the optical isomers (A and B) of silybin, DHS, 7OM and 7OG, and compared their anti-cancer efficacy. Isomers of these three silybin derivatives also showed better efficacy compared with respective silybin isomers, but in each, there was no clear cut silybin A versus B isomer activity preference. Further studies in HTB cells found that DHS, 7OM and 7OG exert better apoptotic activity than silibinin. Clonogenic assays in HTB9 cells further confirmed that both the racemic mixtures as well as pure optical isomers of DHS, 7OM and 7OG were more effective than silybin. Overall, these results clearly suggest that the anti-cancer efficacy of silybin could be significantly enhanced through structural modifications, and identify strong anti-cancer efficacy of silybin derivatives, namely DHS, 7OM, and 7OG, signifying that their efficacy and toxicity should be evaluated in relevant pre-clinical cancer models in rodents.

Milk thistle and diabetes

Silibinin inhibits the toxic aggregation of human islet amyloid polypeptide.


Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei, PR China.


In type 2 diabetes mellitus (T2DM), misfolded human islet amyloid polypeptide (hIAPP) forms amyloid deposits in pancreatic islets. These amyloid deposits contribute to the dysfunction of β-cells and the loss of β-cell mass in T2DM patients. Inhibition of hIAPP fibrillization has been regarded as a potential therapeutic approach for T2DM. Silibinin, a major active flavonoid extracted from herb milk thistle (Silybum marianum), has been used for centuries to treat diabetes in Asia and Europe with unclear mechanisms. In this study, we tested whether silibinin has any effect on the amyloidogenicity of hIAPP. Our results provide first evidence that silibinin inhibits hIAPP fibrillization via suppressing the toxic oligomerization of hIAPP and enhances the viability of pancreatic β-cells, therefore silibinin may serve as a potential therapeutic agent for T2DM.

Side effects and safety of Milk thistle Seed Extract powder

Milk thistle is generally regarded as safe. Side effects are usually mild and may involve stomach upset and diarrhea. Some people may get a rash from touching milk thistle plants.