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5 Benefits of blessed thistle and side effects

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Discover the 5 shocking benefits of blessed thistle and side effects.

Blessed thistle is used in natural medicine to stimulate breast milk production and digestion. What other uses does it have? Here we detail them.4 shocking benefits of blessed thistle


The blessed thistle (Cnicus benedictus)  is a flowering plant that belongs to the Asteraceae / Compositae family.

It comes from the Mediterranean region, although today it is distributed in regions of the United States, Australia, and South America.

The plant is characterized by its particular hairy leaves, which resemble dandelions. It also has a branched stem and fuzzy yellow flowers that are often used for medicinal purposes.

It should not be confused with milk thistle (Silybum marianum) which is often used as an adjunct in liver disorders. So what is it for? We will detail it in the following space.


Benefits of blessed thistle

A 2016 review details that blessed thistle contains sesquiterpene lactone glycosides, triterpenoids, lignans, flavonoids, tannins, essential oils, trace elements, and other substances with pharmacological potential.

Due to this, antimicrobial, anti-inflammatory, healing, and digestive properties are attributed to it.

Among other things, it has an active compound called niacin, which in addition to giving it its bitter taste, acts as an antibiotic, hypoglycemic, diuretic, cholagogue, and antitumor.

However, there are not enough clinical studies to determine the effectiveness of this plant against many of the diseases in which it is used. Therefore, it should be used with caution.

1. Benefits of blessed thistle for milk production

In natural medicine, blessed thistle is often suggested as a galactagogue, that is, a breast milk stimulant.

According to popular literature, the plant stimulates the production of prolactin or oxytocin, key hormones for lactation.


Still, there are no medical studies that prove this mechanism.

A review shared in The Ochsner Journal talks about the history of using blessed thistle as a possible galactagogue.

However, he concludes that more clinical trials are needed to determine if it works.

The galactagogue use of blessed thistle is anecdotal, as there is not enough scientific evidence to support it.

2. Benefits of blessed thistle for digestion

Due to its content of cinchine, this plant could be an aid against digestive difficulties.

As explained by a study shared in the Journal of the Serbian Chemical Society, this substance stimulates the production of saliva and gastric acid.


Therefore, its consumption could contribute to the digestive process and the prevention of stomach ailments.

3. Benefits of blessed thistle for Cough

Tannins, like the volatile essential oils of the plant, appear to act as expectorants.

For this reason, the blessed thistle is used as an ally to dilute excess phlegm.

Regarding this, there is no scientific data. However, it is believed that it can be an adjunct against respiratory infections.

4. Bacterial infections

The antimicrobial properties of blessed thistle are used for the prevention and treatment of bacterial infections.

The research suggests that can inhibit the growth of common bacteria such as Staphylococcus aureus.


Likewise, a study shared in the Journal of Medicinal Chemistry shows that the cnicin contained in the plant slows down bacterial proliferation since it blocks the enzymes that allow their replication.


5. Other possible benefits

By tradition, blessed thistle has other applications in alternative medicine. However, for now, there is no concrete evidence on these effects:



The increased flow of urine.





Side effects of blessed thistle

To date, there is not enough information about the possible side effects of blessed thistle. It is considered safe when used in the form of tea.

Still, consuming more than 6 grams a day can lead to stomach pain, nausea, and vomiting. The same occurs with its presentations in supplements and tinctures.

Due to its composition, it is not recommended in the following cases:

Patients with inflammatory bowel diseases ( Crohn’s disease and ulcerative colitis).


Pregnant women.


Patients who are taking diuretic or antacid medications.

History of allergy to ragweed or related plants.

The daily use limit for blessed thistle is 6 grams.

Recommendations for use

There is no specific guideline for the correct use of blessed thistle.


Supplements often come in doses ranging from 300 to 450 milligrams. Do not exceed doses of more than 5 grams, since it can be irritating to the stomach.

In general, tea is made with a teaspoon or two of the dried herb for every cup of hot water.

Other presentations are the tincture, made with an alcohol or vinegar base, and the capsules.

What should you keep in mind

The properties of the blessed thistle have not yet been studied in detail.

For this reason, plant-derived remedies are not approved by the Food and Drug Administration (FDA).

You have to be careful when purchasing these remedies on the market.


Similarly, if you have underlying diseases or are under medical treatment, it is better to consult a specialist.

It should not be ignored that plant compounds can interact with drugs or cause certain complications


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