Silymarin 98% capsules are a dietary supplement made from the extract of the milk thistle plant. Milk thistle has been used for centuries for potential treatment of different diseases such as liver and gallbladder disorders, protecting liver against snake bite and insect stings, mushroom poisoning, and alcohol abuse. The capsules are standardized to contain 98% silymarin, which is believed to be a safe herbal product. Silymarin is the active ingredient in milk thistle and is extracted from the plant’s seeds. [R] [R] [R]

Key Features of Silymarin 98%

RCD.Bio offers Silymarin 98%e with the following specifications:

  • A purity of 98%, verified by third-party laboratory testing.

Silymarin [R]

  • CAS Number: 65666-07-1
  • Molecular weight: 482.4 g/mol
  • Chemical Formula:C25H22O10
  • Synonyms: Silybin, Silibin, milk thistle
  • IUPAC Name: 3,5,7-trihydroxy-2-[3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one

How It Works

The main bioactive ingredient in milk thistle, silymarin, is the primary mechanism of action for Silymarin 98% capsules. It has anti-inflammatory and antioxidant characteristics. After being consumed, silymarin is absorbed into the bloodstream and moves to the liver, where it acts. Since free radicals are metabolic waste products that can harm liver cells, silymarin’s antioxidant qualities aid in scavenging them in the liver. Silymarin may help shield the liver’s hepatocytes (liver cells) from harm brought on by different toxins, including alcohol, drugs, and pollution from the environment by lowering oxidative stress in the liver. Silymarin may also increase the synthesis of enzymes necessary for detoxification, aiding the liver in its task of removing noxious compounds from the body. Its anti-inflammatory qualities might also aid in lowering liver inflammation and enhancing overall liver health.

While silymarin is regarded as a potential natural supplement for liver support, it’s vital to remember that the precise mechanisms of its action are still being researched and that each individual may respond differently to it. Furthermore, it is not a replacement for medical care for the treatment of liver disorders or conditions; instead, people with serious liver issues should speak with a healthcare provider for the most appropriate management. [R] [R]


Silymarin 98%  Research

Numerous studies have been conducted on the potential application of Silymarin 98% (milk thistle extract) . Below are some of the relevant findings on the vitamin products:

Silymarin as Antioxidant

Silymarin is a natural antioxidant that may be beneficial for a number of disorders affecting the liver thus may promote healthy liver function. It may also aid the immune system, metabolic health, and other areas of the body. Silymarin has been demonstrated to have potent antioxidant and radical scavenging activity in vitro, and it may have uses in pharmacology and food. Silymarin protects against oxidative stress-induced hypertension, atherosclerosis, and cardiac toxicity and possesses antioxidant properties against cardiovascular disorders. By scavenging free radicals, boosting antioxidant enzymes, preventing lipid peroxidation, and shielding cells from oxidative/nitrosative stress, silymarin functions as an antioxidant. Silymarin’s protective effects against a number of diseases, including cancer, diabetes, hepatitis, non-alcoholic fatty liver disease, and neurodegenerative diseases, are thought to be a result of its antioxidant qualities. [R] [R] [R] [R]


Silymarin as Anti-fibrotic

One of the potential benefits of silymarin for a variety of health conditions is its anti-fibrotic actions. Silymarin is a free radical scavenger that also regulates enzymes involved in the growth of fibrosis, cirrhosis, and cellular damage. According to a study in the journal Frontiers in Pharmacology, complexing silymarin with hydroxypropyl (HPBCD) and randomly methylated (RAMEB) -cyclodextrins improved the anti-fibrotic properties of the compound in a mouse model of liver fibrosis. In addition to its anti-fibrotic characteristics, silymarin therapy has been demonstrated to protect against reperfusion injury and inflammation by demonstrating anti-inflammatory and antioxidant activity. [R] [R] [R]


Silymarin as Immunomodulating

Silymarin may be useful in treating autoimmune and allergy illnesses because of its possible immunomodulatory effects. Silymarin has several immunomodulatory effects that vary with dose and duration. Silymarin functions as an immunomodulator by inhibiting T-lymphocyte function at low dosages while inducing inflammation at high doses. According to studies, silymarin has inhibited oxidative and nitrosative immunotoxicity as well as immune-mediated liver disorders, allergies, preeclampsia, cancer, and autoimmune illnesses. Additionally, silymarin has been shown to have dual effects on the growth and cell death of several cell types. [R] [R] [R]


Silymarin as Hepatoprotective

Silymarin is well known for having hepatoprotective qualities, supports liver health by protecting the liver from different toxins and oxidative stress. This organic material, which is mostly present in milk thistle, functions as an antioxidant by scavenging dangerous free radicals that can destroy liver cells. Silymarin helps maintain the structural and functional integrity of the liver by lowering oxidative damage. Furthermore, it might promote the synthesis of enzymes vital to detoxification procedures, assisting in the body’s removal of toxic substances. In cases of liver injury or exposure to hepatotoxic chemicals, silymarin’s hepatoprotective properties make it a popular to support healthy liver function; nonetheless, it should be used in conjunction with appropriate medical counsel for serious liver disorders. [R] [R] [R]


Silymarin on Cholesterol

Through its effect on lipid metabolism, silymarin has demonstrated some promise in assisting with cholesterol management. Some studies suggest that silymarin may aid in lowering blood levels of low-density lipoprotein cholesterol (LDL, frequently referred to as “bad” cholesterol), even if its benefits on lowering cholesterol are not as well-established as its hepatoprotective capabilities. This effect is thought to be produced by affecting liver enzymes involved in the production of cholesterol. Silymarin may have some advantages in preserving normal cholesterol levels, however it is not a primary nor very successful treatment for hypercholesterolemia. [R] [R] [R]



The information presented here is for educational purposes only, although it may supports liver function it should be not be taken as medication or dietary supplements. It should not be construed as medical advice for daily value use on medical condition.  Silymarin   is intended for laboratory research use only and is not intended for human use.

Potential Side Effects

Silymarin milk thistle has been known for a long time with supplement facts, but additional support of research should be done. Even though traditional herbalists use it , there are still some effects that are known , which are listed below: [R] [R] [R]

  • Gastrointestinal symptoms
  • Headaches
  • Allergic Reactions
  • Immunomodulatory effects
  • Lower Blood Sugar
  • Mild Laxative Effect

Where Can I Buy Silymarin online? offers vegetarian formula for Silymarin but only for laboratory and research use only. Some company sell this as dietary supplement with product formulation of natural color variation and with extra strength of 150 mg, double strength forms (300 mg)

When buying Silymarin milk thistle, it is important to choose a reputable market seller who provides quality  Silymarin. At, customers can ensure each product is accompanied with a third-party-issued Certificate of Analysis showing the identification, purity, and concentration of our product. RCD.Bio has a GMP facility that is the good standard now manufacturing process.


Silymarin 98% capsules are a dietary supplement derived from milk thistle (Silybum marianum) seeds, containing a highly concentrated form of silymarin, the primary bioactive compound. Silymarin is known for its potential hepatoprotective, antioxidant, and anti-inflammatory properties, which may benefit liver health and protect liver cells from toxins and oxidative stress. While it has shown promise in various applications, such as supporting liver health, potentially lowering cholesterol, and providing cellular protection from toxic damage, it’s essential to use silymarin under the guidance of a healthcare professional and to be aware of potential side effects and interactions with others taking medication.



Please take note of the scientific applications of this product and carefully read our Terms and Conditions before making a purchase from By completing your order and submitting payment, you agree to abide by our Terms and Conditions. Please be aware that the product packaging may differ slightly from the images displayed on our website.

If for any reason you are not completely satisfied with the product you receive, please contact us at [email protected]. Our team is dedicated to ensuring customer satisfaction and will be happy to assist you.

PLEASE NOTE: All products offered by are strictly intended for laboratory and research purposes only. They are not intended for use on animals or humans.