Hazel: Benefits, Dosage, Contraindications

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The hazel is a tree or shrub of the Betulaceae family. It primarily grows in temperate regions of the Northern Hemisphere. It has green, deciduous leaves. Its fruit, the hazelnut, is enclosed in protective bracts. The parts used in phytotherapy are the leaves, buds (gemmotherapy), and its oil. Thanks to its high tannin content, hazel (just like its distant cousin witch hazel) is a venous tonic, useful for circulation problems and associated symptoms like heavy legs. In gemmotherapy, hazel is particularly recognized for its benefits on the lungs and respiratory system. Hazel bud extract is recommended to combat pulmonary sclerosis and chronic respiratory diseases such as asthma, chronic bronchitis, and bronchial dilations. Hazel bud is also used for its protective effects on the liver. It helps prevent the progression of liver diseases to sclerosis. The vegetable oil extracted from its hazelnuts, rich in monounsaturated fatty acids, is used for its nourishing and softening properties.

Other name(s) 

Common Hazel

Scientific name(s)

Corylus avellana

Family or group: 

Plants

Active ingredients:

Tannins


Indications

Rating methodology

EFSA approval.

Several clinical trials (> 2) randomized controlled with double blind, including a significant number of patients (>100) with consistently positive outcomes for the indication.
Several clinical trials (> 2) randomized controlled with double blind, and including a significant number of patients (>100) with positive outcomes for the indication.
One or more randomized studies or multiple cohorts or epidemiological studies with positive outcomes for the indication.
Clinical studies exist but are uncontrolled, with conclusions that may be positive or contradictory.
Lack of clinical studies to date that can demonstrate the indication.


Cirrhosis
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The anti-sclerosis, or anti-fibrotic effect of hazel can be particularly beneficial for the liver, as it helps prevent or slow the development of hepatic fibrosis. Fibrosis is a process where excessive connective tissue forms in the liver in response to chronic damage, such as those caused by hepatitis, alcoholism, or non-alcoholic fatty liver disease (NAFLD). This connective tissue can eventually progress to cirrhosis, where scar tissue replaces functional liver cells, impairing liver function.

Posologie

posologieOral route: buds

posologie15 drops

formulationgemmotherapy


Bronchitis
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In gemmotherapy, hazel is a lung remedy to take for all the following conditions: asthma, various allergies, bronchitis, bronchial dilations to prevent sclerosis.

Posologie

posologieOral route: buds

posologie15 drops

formulationgemmotherapy


Asthma
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In gemmotherapy, hazel buds are used for their beneficial effects on lung tissue, helping to reduce the frequency and intensity of asthma attacks.

Posologie

posologieOral route: buds

posologie15 drops

formulationgemmotherapy


Lymphedema
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Hazel is renowned for its action on the lymphatic circulation, used to help reduce the symptoms of lymphedema by improving lymphatic flow.

Posologie

posologieOral route: buds

posologie15 drops

formulationgemmotherapy


Skin health
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Hazelnut oil, rich in essential fatty acids, is applied to nourish the skin, promoting its regeneration and improving its elasticity and hydration.

Posologie

posologieOral route: fruit

formulationoil


Properties


Cardiovascular

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Laboratory research indicates that hazelnut extract, containing antioxidant phenolic acids, inhibits LDL oxidation and can therefore theoretically reduce atherosclerosis.


Safety dosage

Adult: 15 drops - 100 drops

At 1D: 50 drops per day.


Precautions

Pregnant woman: avoid

The use of gemmotherapy for pregnant and breastfeeding women is not recommended.

Child up to 3 year(s): avoid

The use of gemmotherapy for children under 3 years is not recommended.

Breastfeeding woman: avoid

The use of gemmotherapy for pregnant and breastfeeding women is not recommended.