Frangula bark, what is it used for?

Frangula tea is perfect to avoid constipation. You have probably heard of frangula bark or frangula to dry. It is a natural remedy designed above all to avoid occasional constipation, since this plant provides many benefits in this regard.The dried, whole or fragmented bark of frangula It is a perfect option for you to treat constipation, you only need a little of this crust and a cup of hot water. We tell you how taking it can benefit you.

Frangula, is also known as Ramnus frangulaIt is a shrub that can measure up to five meters in height, it does not have spikes and its bark has a reddish hue. Sometimes it is altered by elongated white spots generated by tears in the bark that can be produced by scratches or bumps.

Characteristics of the frangula

The frangula is located on the edges of rivers and in general in any humid place, in the Iberian Peninsula we find it especially in the northern half, since in the southern area it is not usually found.

The leaves of this plant are of a striking green color, and are arranged alternately. It is a well-known plant, and is widely used in herbodietics, since it is very useful to fight against constipation but prolonged use is recommended, because it could be counterproductive.

It is also known as the constipation plant, Its active principles are anthraquinone compounds typical of this plant, the dried bark of the trunk and branches is used.


The flowers of the frangula appear between the months of April and JulyThey are small and greenish flowers, although white-pink flowers also appear, which come together in a variable number. Many flowers will not last, so that when it matures, there is a much lower number than the flowers.

Botanically, the fruits change color, going from green to black and previously through yellow, pink and dark red. Inside, there are three compressed bones, and they have almost no flavor. Harvesting takes place in the months of April and July, when it coincides with the flowering season., the branches that are already between 3 and 4 years old should be collected.

The bark should be removed as soon as possible, because if you wait a long time it will be much more difficult to do it. The drying must also be as fast as possible so that the properties do not disappear.

The components reach the large intestine unabsorbed, there they are hydrolyzed and are transformed into active metabolites thanks to the intestinal flora. There is an increase in bowel movement and the secretion of water and electrolytes into the intestinal lumen, with the consequent laxative effect.

Causes of constipation.

How does it apply

The bark of the frangula contains anthraquinone compounds in a proportion of up to 4%, notably frangulosides A and B, which give it that laxative and purgative action, always depending on the amount of the plant taken.

It is also used as a cholagogue, by causing bile to escape from the gallbladder and extrahepatic canaliculi, so it is recommended for all those who have biliary dyskinesias.

It should not be used when you are pregnant, or when you are breastfeeding., have menstruation, hemorrhoids, acute abdomen and in case of having a gastroduodenal ulcer, since as a side effect it can cause intestinal colic.

Neither should the fresh bark ever be used, since it can produce nausea, colic, and gastrointestinal spasms. 

Uses of frangula in medicine

As we say, frangula is a great laxative, it is a natural and mild laxative, and its effects last for several days, depending on the dose of cholagogue, which manages to stimulate bile secretion, allowing its effect to be the most effective. In addition, it also acts as an adjunct in anthelmintic and healing treatments. 

It also allows you to help us in certain other aspects:

  • Constipation and chronic constipation. 
  • Improves hemorrhoids since bowel movements are easier.
  • It acts as a purifying aid. 
  • Improves biliary disorders.
  • Stimulates the elimination of uric acid, and the dissolution of urate stones, this capacity is held by all plants rich in anthraquinones.
As we say, frangula is a medicinal plant used as a remedy in case of occasional constipation. Its active principles are found in the bark and have great laxative properties. It helps to evacuate the stool with ease, the infusion takes effect 6 to 12 hours after ingestion. 

Dosage to take frangula safely

What you need to take frangula and have good results without endangering your health, is to put 7 grams of frangula per cup, you must boil for 15 minutes, the effect lasts 6 hours, so you can take the frangula slowly during that time . You can prepare a large pot for several days and take it in moderation. Other sources advise taking 0,5 grams to 3 grams per cup, since the effect is very strong.

It will also depend on the "jam" that the person has, since they will have to take more or less amount of frangula during the day.

How can you take the frangula

What we have previously told is the number of grams of frangula to make an infusion. If you decide to make an infusion, seven grams of frangula bark will be enough, you will have to boil it for 15 minutes. Then the effect lasts for 6 hours.

Ideally, drink this cup overnight before going to sleep, to feel the effect the next morning. 

On the other hand, you can use a gram a day as laxative, as long as you take it in powder form, or four grams as a purgative.

Constipation can be easily treated.

Risks and side effects

If we spend time taking frangula infusions, we may have some inconveniences, such as having abdominal pain, vomiting and nausea, especially if it is taken fresh, for this reason, it is always recommended to take it dry.

On the other hand, it is not advisable to prolong the treatment because it could have unpleasant side effects. From pain in the stomach, cramps or colic.

Taking frangula is not recommended

If you are thinking of taking frangula to treat your mild constipation, you will have to take into account certain guidelines so as not to endanger your health.

  • Frangula is not recommended during pregnancy.
  • Avoid taking it while breastfeeding. 
  • Do not take it when you are menstruating.
  • If you have a gastrointestinal ulcer.
  • When you are with a magnesium salt treatment. 

consult with your doctor your intention to take frangula so that he can assess your condition and can give you the best recommendations.

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