Milk Thistle (St Marys Thistle)

Milk Thistle (St Marys Thistle)

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Traditionally used in herbal medicine to support healthy liver function and digestion.
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Milk thistle tea (Silybum marianum), also known as St Marys thistle, is one of the most well-known liver support herbs in traditional Western herbalism. These wildcrafted milk thistle seeds contain silymarin, a group of flavonolignans that have made this herb one of the most researched botanicals worldwide. Milk thistle benefits are well documented in herbal pharmacopoeias, and the seeds produce a mild, nutty-flavoured decoction that is easy to incorporate into a daily wellness routine.

Key Benefits

  • Liver support: Traditionally used to support healthy liver function, especially after periods of rich food or drink. The most well-known of the milk thistle benefits.
  • Digestive comfort: Traditionally used as a bitter tonic to support healthy digestion and ease occasional digestive discomfort.
  • Rich in silymarin: Milk thistle seeds are the primary source of silymarin, a group of bioactive compounds including silybin, silydianin, and silychristin.
  • Wildcrafted quality: Whole dried milk thistle seeds, harvested from wild populations for a potent, authentic herb.
  • Versatile preparation: Use as a decoction (simmered tea), grind into powder for smoothies (also available ready-ground as Milk Thistle Powder), or use in tincture making and home herbalism.

Milk thistle tea (decoction): Lightly crush 1 to 2 teaspoons of milk thistle seeds using a mortar and pestle. Add to a small saucepan with 1 cup of water, bring to a gentle boil, then reduce heat and simmer for 15 to 20 minutes. Strain and drink 1 to 3 cups daily. Crushing the seeds helps release the beneficial compounds.

Blending: For a liver-supportive blend, combine with Dandelion Root, which is also traditionally used to support liver and digestive health. For a gentler flavour, try adding Peppermint or Lemon Balm.

The name "St Marys Thistle" comes from a legend that the white veins on the plant's leaves were caused by drops of the Virgin Mary's milk. This distinctive marbling makes milk thistle one of the easiest herbs to identify in the wild.

Milk thistle is generally considered non-toxic to dogs and cats. The seeds are also a favourite food of goldfinches and other seed-eating birds.

Those with allergies to plants in the daisy family (Asteraceae) should use with caution. May interact with some medications metabolised by the liver. This information is not a substitute for medical advice. Consult a healthcare provider before use, especially if pregnant, breastfeeding, or taking medication.

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Customer reviews

Rated 4.97 out of 5 based on 38 customer reviews for Milk Thistle (St Marys Thistle).

Rated 5 out of 5. I make a decoction with St Mary's Thistle, Dandelion root & Lemon Balm for my husband every night, as per the very helpful instructions on the website. The "How To Use" section on each product has been very helpful. Anita Cuschieri , May 2026.

Rated 5 out of 5. I love the reshness of the product. I purchase a make St Mary's Thistle tea every second week to keep my liver clean. Thnk you Mudbrick Cottage original organic products Julia Theodosis , March 2026.

Rated 5 out of 5. I grind the seeds and consume with yogurt every day to support and protect liver. It helps with digestion too. Rich in silymarin, which reduces inflammation and provide antioxidant effect. Margaret Knapik , August 2026.

Rated 5 out of 5. Freshly dried. Order was easy and delivery was fast. Great communication from owners. This herb was bought as part of the liver support recipe and looked and smelled freshly dried. Taste in tea is great as well.Thank you! Anonymous , September 2024.

Rated 5 out of 5. Nice to find a specialist herb farm with organic produce. Used to use Henry Blooms stuff but after not being able to find it anymore found Mudbrick on Google. Not keen on the stuff in Chemist warehouse and the local health food shops so after having a good read of the Mudbrick's website and how passionate they seemed about their produce, gave them a go. I personally use the Milk Thistle and Dandelion Root for a crook liver and the herbs are really nice and clean and take the pain down for me so I was happy with the product and will rebuy as soon as I run out. Cheers, Mark :) mark williams , July 2024.

Rated 5 out of 5. I go through a lot of this in my Natural teas I make for my Husband we have found these to be the Best ones supplied super quick on postage and 99.9% of the time in stock when I have forgotten to order in advance Thanks Team for always having my back Jacquie Sloane , July 2026.

Rated 5 out of 5. Great herb. Works wonders for health and liver and taste great Phouthorn Inthavong , July 2026.

Rated 5 out of 5. St MarysThistle. I am so pleased to be able to use an Organic and clean product instead of capsules.Thank you Mudbrick Cottage for a healthier life to humanity Julia Theodosis , November 2025.

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