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| General
Information |

Common Name: |

Hawthorne |
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Latin
Name:
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Categus
Oxyacantha |
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Family:
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Rosaceae |
| Other
Names: |
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Haw.
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May.
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Mayflower.
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Mayblossom.
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Maybush.
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Whitehom.
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| Indications
& Historical Uses |
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Indications:
Hawthorne is one of the most valuable herbal cardiovascular tonics
available. It is described in most modern herbal literature as
a valuable drug for the treatment of various heart ailments and
circulatory disorders. Hawthorne has been used in the treatment
of irregular heartbeats, high blood pressure, spasms of arteries
(e.g. Raynaud's) and certain nervous disorders. It has also been
used to control atherosclerosis. Hawthorne has potential to be
a very valuable drug. However, further scientific studies are
needed to substantiate the beneficial effects of the drug. Until
additional research has been carried out., prospective users of
hawthorne , for heart and circulatory disorders should consider
all the consequences and seek medical advice before self-treatment.
Historically
It
has been used in the following conditions:
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Cardiotonic.
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Spasm
of arteries (Raynaud's).
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High
and low blood pressure.
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Old
age vascular problems.
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Nervous
disorders.
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Insomnia.
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Coronary
artery and perfusion disorders[ mild stable angina ].
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Irregular
heartbeats.
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Dyspepsia
and diarrhea.
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Toxicity is low and becomes evident only in large doses,. Therefore,
it is relatively harmless if taken in recommended doses. It seems
to be a relatively harmless mild heart tonic which apparently
has been beneficial in many conditions where this kind of treatment
is required.
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| Contraindications
& Precautions |
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Hawthorne
may potentiate the action of digitalis and other drugs that have
cardiovascular effects. (See
Caution).
Drug
Interaction:
May potentiate action of digitalis and other cardiac drugs. Therefore,
patients on these drugs should refrain from using Hawthorne unless
supervised by a .physician . (See
Caution) .
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| Dosage
Information |
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Dosage:
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250mg/day. |
| Pharmacology
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Modern
research has revealed some interesting properties of hawthorne.
It's berries are rich in flavonoids and they act on the body in
2 ways: First, they dilate the blood vessels, especially the coronary
vessels, and secondly, they reduce peripheral resistance and thus
lower blood pressure. Therefore, it reduces the tendency to angina
attacks.
Additionally, flavonoids have a direct favorable effect on the
heart itself , which is especially apparent in cases of heart
damage. Hawthorn's action is not immediate, but develops very
slowly and is relatively harmless if taken in the recommended
doses. It takes up to two weeks to acquire high enough tissue
concentrations of hawthorn to produce observable effects. (See
Precautions).
Because
of its slow onset of action ,it is not useful for acute attacks
of angina, but is helpful in reducing the tendency to angina.
Hawthorne
is also known to have a positive ionotropic effect on the heart
and accelerates the heart, increases nerve conductivity and heart
muscle functioning. Hawthorne is also known for its sedative effect
.
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Active
Ingredients:
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Mixture
of:
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Flavonoids.
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Saponins.
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Procyanidins.
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Trimethylamine.
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Tannins.
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Enhancing
Agents:
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Valerian
root.
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Motherwort.
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| Origin |
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Hawthorne
is a small thorny tree with white and red flowers and berries.
It is found in England, Europe and North America. Hawthorne is
widely used in Europe, especially Germany. Three dozen different
preparations containing extracts of these plant parts, either
singly or in combination with other drugs, are currently marketed
in Germany. Active ingredients are extracted mainly from the berries,
although the flowers and the leaves also contain some of the active
ingredients Because the berries, leaves and flowers all contain
compounds which affect the heart and the circulatory system, products
containing them should not be used indiscriminately.
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| Processing |
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Processing
involves only alcoholic extraction.
Standardized
extract should contain 2% Vitexin and 2% Vitexen Rhamnoside.
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| Scientific
References |
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Mowrey, D. (1990) Guaranteed Potency Herbs. A Compilation
of writings on the subject.
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Ullsperger, R. (1951) Preliminary communication concerning
a coronary vessel dilating principle from hawthorne. Pharmazie
6(4):141-144.
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Rewerski, W and Lewak, S. (1970) Hypotonic and sedative
polyphenol and procyanidin extracts from hawthorne. Ger.
Offen. 2:145-211.
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Mowrey, D. (1986) The Scientific Validation of Herbal
Medicine. Cormorant Books.
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To Index |
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