Milk thistle seed | Silybum marianum | Organic


Milk thistle also known as St Marys thistle has a long history of usage, dating back 2000 years. Preparations have been used mainly for digestive indications and its recent scientific investigations have revealed the flavolignans in Milk thistle seed have liver protective properties. These lignans protect the liver from injury due to the metabolism of cetain drugs and poisons including alcohol and death cap mushroom.

Therapeutic usage has been extended to fatty liver disease (2), metabolic syndrome (3), concurrant usage alongside medications and chemotherapy, to stimulate bile secretion and aid in the treatment of hepatitis & cirrhosis of the liver. Its mechanisms of action are thought to include:

  • antioxidant protection of the liver cells during phase 1 and 2 metabolism (4)
  • inhibition of xanthine oxidase
  • inhibition of LOX inflammatory pathways

Milk thistle is an important herb for many other ailments which have a strong liver element such as hormonal issues, inflammation and overall digestive function.

All of our teas are organic or wild harvested from natural surroundings. Enjoy!

This information is for educational purposes. Please do not self-treat disease using herbs alone. Always consult with a qualified & registered herbalist and inform your doctor and pharmacist about your use of herbal remedies.


  1. Fisher, C, 2009
  2. Milk thistle (Silybum marianum): A concise overview on its chemistry, pharmacological, and nutraceutical uses in liver diseases.  Phytother Res. 2018 Nov;32(11):2202-2213. doi: 10.1002/ptr.6171.
  3. Silybum marianum (milk thistle) and its main constituent, silymarin, as a potential therapeutic plant in metabolic syndrome: A review. Phytother Res. 2018 Oct;32(10):1933-1949. doi: 10.1002/ptr.6153.
  4. Silymarin: not just another antioxidant.  J Basic Clin Physiol Pharmacol. 2020 Mar 5.


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Additional information


Dried Milk thistle seed also known as St Marys thistle


Flavolignans – silymarin, silybin A, silybin B, silydianin, silychristin, isosilybin A, isosilybin B, Flavonoids – taxifolin, apigenin, Amines – tyramine, histamine, trimethylglycine


Hepatoprotective, Bitter tonic, Cholagogue


Milk thistle extracts should be avoided when taking certain medications. Milk thistle is known to affect warfarin metabolism so avoid concurrent usage. Milk thistle shoul dbe avoided when anaemic as it can inhibit iron metabolism. This herb has GRAS rating {Generally Recognised as Safe}. Herbs should generally be avoided when pregnant or trying to concieve. Please consult with a qualified practitioner before self-prescribing.


Steep 1 teaspoon of herb for 10-20 minutes. Reuse and drink 1-3 times a day.


30 grams, 50 grams, 100 grams

Country of origin

Native to the South western Europe. Dried herb harvested in China.