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There are plenty of different ways of preparing herbs for medicinal uses. All these methods aim:
There are specific optimum methods of preparation and use for each medicinal plant. Knowing what these methods are and how to apply them is worth knowing so that the properties of each plant are appropriately applied.
Herbal teas are obtained by treating vegetable products with water. This is the most popular method used to prepare medicinal herbs. Water is ideal for extracting most chemical substances produced by plants because it is a universal dissolvent. Herbal teas are primarily used for oral intake; however, some other uses include compresses, eye drops, lotions, etc.
Herbal teas result from the action of water on vegetable products, depending on the method used. There are three ways to obtain herbal tea: infusion, decoction, and cold extract. With all three, the first step is to:
Infusion is the ideal procedure to obtain herbal teas from the delicate parts of plants: flowers, leaves, clusters, and stem buds. Many active substances are extracted with almost no alteration of their chemical structure with infusions, thus preserving nearly all their properties.
As a rule, infusions may be preserved for about twelve hours. Prepare them in the morning, and drink them during the day. If the weather is hot, keep infusions in the refrigerator. They may be warmed but not boiled again. Infusions prepared 24 hours before should not be consumed.
Decoction is mainly used to prepare herbal teas from the hard parts of plants (roots, rhizome, seeds), which require sustained boiling to liberate their active principles. Decoction has a disadvantage: some of the active principles may degrade because of the prolonged action of the heat.
A decoction should be prepared in this way:
After boiling, decoctions may be preserved longer than infusions, especially when kept in the refrigerator. They may be used for several days, though keeping them for more than one week is better.
The cold extract method is used to extract the active principles of a plant or part of it by using water at room temperature as a dissolvent (other applicable dissolvents are alcohol or oil). The cold extract consists of soaking the parts of the plant after it has been ground. This method is the most suitable for the following cases:
A cold extract is prepared according to the following steps:
Cold extracts may be preserved for up to one month, especially when the dissolvent is alcohol or oil instead of water.
Volume | Dry flowers or leaves* | Dry roots or rhizome* |
One teaspoon = 5 ml | 1 g | 3 g |
Two teaspoons = 10 ml | 2 g | 5 g |
One tablespoon = 15 ml | 4 g | 10 g |
A pinch = 2 ml | 0.5 g | 1.5 g |
A handful = 20 ml | 5 g | 12 g |
As a rule, medicinal herbs do not require as strict a dosage as medicines. Due to the wide tolerance range for most of them, there is no need to measure with absolute precision the weight of the plant for a herbal tea, nor the volume of it to be drunk.
In the detailed analysis of each plant, we detail its doses. However, the usual rule establishes that for an adult person, the doses are as follows:
For an adult, it is usual to drink from three to five teacups daily (150 ml each). On this website, unless indicating another rule, the amounts we give always refer to dry plants. When fresh plants are used, the amounts must be three or four times more to obtain the same effects as the dry plant.
Herbal teas for children are less concentrated (with fewer herbs) or are prepared with the same concentration, but the children are given a smaller quantity of herbal tea. Child dosage is reduced proportionally, depending on the child’s age.
Only plants devoid of any toxic effect should be administered to children.
It is better to drink herbal teas unsweetened. However, some cases may require the drink to be sweetened.
Those herbal teas with an appetizing effect should not be sweetened because sugars may diminish the sensation of hunger. Also, diabetic people should abstain from adding sugar to herbal teas and use artificial sweeteners instead.
Honey is the ideal product to sweeten herbal teas. It comes from flowers, and besides sugars, it contains minerals and vitamins with a high nutritional value. Honey may be substituted by brown sugar, molasses (sugar cane honey), or maple syrup, which are also rich in minerals and vitamins, and have better properties than refined sugar.
A few drops of lemon juice or a piece of lemon rind can also give herbal teas a better flavor. Why not try, by any means, to make our medicine more appealing?
According to their chemical composition and properties, a mixture of several kinds of plants in the same herbal tea may have positive effects if they are well combined. However, when the mixture is not well combined, medicinal effects may disappear.
With the mixture of several plants, possible undesirable effects of each can occur (awful taste, digestive intolerance). However, it is not always necessary to mix plants. One plant, when well applied, may exert better effects than the mixture of several poorly combined ones.
Besides simple herbal teas, other methods of preparing medicinal herbs demand specialized knowledge and instruments used in the pharmaceutical industry. These are the so-called “galenic preparations,” in honor of Galen, the Greek physician of the second century B.C. They are also called “officinal preparations” because they are prepared in pharmacies.
However, some of these preparation methods may also be made at home, such as syrups or juices. The following are the most commonly used methods of preparation in phytotherapy.
Juices must be made from fresh plants by mashing them in a mortar and then filtering them soon after they are picked. They may also be made using an electric blender. Juices may be obtained either from herbaceous plants or from leaves and fruits. The juice of aloe leaves is highly appreciated due to its appetizing and digestive properties.
Juices contain all undegraded active components, especially vitamins. They must be drunk in small doses and teaspoonfuls because they may be too intense for delicate stomachs. You may need to dilute them with water. Many juices serve as a syrup base. Plants that should only be ingested when dry should never be consumed as juice.
To obtain powder for medicinal use, the parts of the plant should be dried for longer than usual and then be finely ground. Medicinal powder may be obtained from a plant’s leaves (for example, the foxglove plant or tinnevelly senna), from their flower clusters (for example, hops, wormwood), from the bark (for example, cascara sagrada, willow), from the fruits (coriander), and particularly from the roots (ginseng, devil’s claw, jalap, senega snakeroot, and violet). Powder offers the following advantages.
Ways to administer powder
Syrups are concentrated dissolutions of sugar and juice or other parts of the plant. Their advantage is that they mask the terrible taste of many plants, thus easing their intake. They are beneficial for children.
Whenever possible, syrups must be prepared with honey, thus adding the respiratory and stimulating properties of the latter to those of the plant. Brown sugar may also be employed. To prepare syrups, the mixture must be cooked over low heat to slow the dissolution of sugars.
Most syrups are used for respiratory diseases (for instance, poppy onion, ipecacuanha, the black elder, violet). Those made of fruit have invigorating and refreshing and vitaminic properties and contain vitamins (for instance, barberry, garden raspberry, red currant, and bramble). People with diabetes should abstain from taking syrups due to their high sugar content.
Liniments are an emulsion (mixture) of medicinal herb extracts with oil and/or alcohol. They have a soft consistency and are applied to the skin by gentle rubbing. The active substances penetrate through the skin into deeper tissues. Liniments are used mainly for rheumatic and muscular symptoms.
Extracts are obtained employing a dissolvent applied to the active parts of the plant. The solvent is finally evaporated, and only the active components remain. The most usual dissolvents are ethyl alcohol, propyleneglycol, ether, glycerine, certain oils, and water.
The liquids extracted have varying degrees of consistency, resulting in different types of extracts.
Tinctures are alcoholic solutions that contain a high concentration of specific components of the plant, precisely those which are alcohol-soluble. Tinctures are prepared by putting a well-dried, ground plant in alcohol at room temperature for two or three days, or even up to 15 days, such as in the case of arnica.
There are two reasons why tinctures must be used with caution.
As a general rule, we recommend tinctures to be administered only to patients suffering from certain diseases and always under medical control and prescription. Tinctures must never be administered to children. Their most recommended use is external applications, such as monkshood, arnica, hemp, or rosemary.
In ointments, the active elements are dissolved in a fatty substance. The most traditionally used fats are Vaseline, oil, lanolin, or animal fats. Ointments are solid at room temperature and soften when rubbed on the skin. Creams are prepared with other fatty substances currently produced by pharmaceutical companies.
The poplar ointment, which is extracted from the young buds of black poplar, produces sound effects against hemorrhoids. Ointments of henbane and monkshood, which are toxic when taken orally, have been used for centuries as calming substances for neuralgia, sciatica, and persistent aches.
When applying a plant or any plant-based preparations, there are two methods to consider:
The same herbal teas, juices, oils, and other internal preparations may also be used externally, though it is better if they are more concentrated. A factor to consider is that many active substances of plants may also be absorbed through the skin when applied externally, passing them to the blood. Thus, potentially toxic plants must be spread with caution, even when used externally, specifically with creams and ointments made from monkshood, henbane, hemp, and poison parsley, which have been used from ancient times to ease neuralgia and rheumatic aches.
Baths, enemas, fomentations, steam inhalations, and other hydrotherapeutic applications have curative effects on their own, even when employed only with water. When taken with herbal tea or other plant preparation, the medicinal effects combined with water are thus more effective.
A bath is the complete or partial immersion of the body in water, to which preparations of medicinal plants may be added. Examples are:
For sitz baths with medicinal plants, one or two liters of infusion or decoction are prepared (generally more concentrated than those employed in internal use) and poured into the bathtub, adding the required amount of water to reach the hips, under the navel.
The legs and the upper half of the body must not touch the water. The ideal way is to take hip baths in a special basin designed for sitz baths, though they may also be taken in a bidet, in a wide washbowl, or sitting in the bathtub with the knees high and flexed. While having the bath, the hypogastrium (the groin area) should be softly rubbed with a sponge or cotton cloth.
Hip baths produce a circulatory stimulation in the lower part of the abdomen and have favorable effects on the organs of the area: large intestine, bladder, and internal genital organs. Moreover, hip baths act directly on the skin and the external tissues of the genital organs and the anus. They are pretty effective in the following cases:
Hip baths are taken with warm or cold water unless contraindicated to achieve a more stimulating effect. Nevertheless, in some cases, the water should be hot:
A hip bath must not last for more than three minutes if taken with cold water, while when taken with warm or hot water, it may last 10 minutes. It is usual to have one or two baths daily, and even three, changing the water each time.
Foot baths, taken with hot water, are useful for alleviating headaches (especially when mustard flour is added to the water) and improving the legs’ blood flow (with grapevine or blind nettle leaves, for instance). They are usually taken by adding one liter of the same infusion or decoction employed for internal use, to 3 or 5 liters of water.
Hand baths are successfully used to improve blood circulation in the upper limbs. They must be taken with warm or slightly hot water. Hand baths with ginkgo are recommended to prevent itching, swelling, and cold and blue hands caused by arterial spasms.
Poultices are prepared in several ways.
Cataplasams or poultices, in contact with the skin for long periods, reinforce several properties of the plant, such as the following:
When applying poultices, some points should be considered:
Compresses are easier to use than cataplasms, though their effects are less intense.
Compresses are applied in the following way.
Some plants may stain skin when applied in compresses, especially those plants which contain tannins (English oak, English walnut, black alder). Rubbing with lemon juice will help to recover the normal skin color.
Compresses are used as cicatrizants and antiseptics on wounds and skin ulcers (sticklewort, black alder, hazelnut, calendula, nasturtium, onion, cabbage, horsetail, ivy, English walnut, licorice, English oak) to make skin more beautiful (strawberry, witch hazel, rose, linden), for the eyes (cornflower, chamomile), or as analgesics and sedatives (oats, European mistletoe).
Fomentations are applied in the same way as compresses, but the liquid must be as hot as the skin can resist. Two more cloths are used apart from the one soaked in the medicinal infusion or decoction: a dry one under it to protect the skin and another over it to maintain the heat.
Fomentations are mainly used in respiratory diseases (catarrhs and bronchitis), throat and trachea inflammations, colic spasms (kidneys, liver, and intestine), and sciatica. In these cases, they are applied using the same herbal tea used internally, reinforcing its action.
Lotions are applied using an infusion, decoction, cold extract, or juice, which is applied through a gentle massage over the skin. Friction is applied in the same way, usually employing essential oils and with a more vigorous massage. They can be applied with bare hands or with a soft cloth soaked in the liquid.
Lotions and frictions may be used for the following:
Steam baths are applied to the head, torso, or whole body. Steam baths are used in the following ways:
Steam baths are beneficial for respiratory diseases, including sinusitis, pharyngitis, laryngitis, tracheitis, bronchial catarrhs, and bronchitis, and otitis (infection or inflammation of the ear). They facilitate the elimination of mucus, germs, and cellular waste from the respiratory mucosa, thus accelerating the regeneration and healing.
Gargles are an easy way to apply medicinal plants to the throat. Gargles are done this way:
Gargles act on mucus, covering the rear part of the mouth, the throat, and the tonsils. They remove mucous, germs, dead cells, and toxins in these areas in cases of irritation, inflammation, or infection. They also have soothing, antiseptic, and astringent healing effects.
The plants most used for gargles are black alder, bistort, bennet, chestnut bark and leaves, onion, five-finer grass, white dryas, blackthorn, willowherb, strawberry, restharrow, pomegranate, goldenseal, common plantain, English walnut, rhatany, rosemary, black elder, tormentil, and vervain.
Mouthwashing involves siping liquid (generally an infusion or decoction) and rinsing the mouth. It is beneficial in stomatitis, gingivitis, pyorrhea, and other mouth-tooth afflictions. The same plants are used for mouthwashes.
Eye drops are liquids employed to heal eye or eyelid affections. They must not be too concentrated or irritating and should be applied warmly. To achieve better sterilization, eye drops should come from infusions made with water previously boiled for five minutes or with decoctions. Eye drops made with cornflower, motherwort, red eyebright, chamomile, and grape leaves are frequently used.
Eye bathing is done by soaking a compress in plant decoction and gently dripping the liquid from the temple to the nose. As with eye drops, it is recommended to ensure good liquid sterilization to wash the eyes, preferably decoctions. Five minutes of boiling are enough to obtain adequate sterilization for decoctions and infusions.
Enemas are the introduction of a liquid into the large intestine through the anus through a rubber irrigator. The liquid may be a low-concentrated infusion, or decoction warmed to body temperature (98.6°F).
When giving an enema, some points should be adhered to:
The aims of enemas are:
Vaginal irrigation introduces low-concentrated infusions or decoctions at body temperature (98.6°F) inside the vagina, utilizing a special irrigator or cannula.
The most commonly used plants for this kind of irrigation are bistort, five-finger grass, pomegranate, high mallow, Lady’s mantle, great burnet, rhatany, rose, loosestrife, sage, and white willow. They are used in cases of vaginitis and leucorrhea (excessive menstrual fluids). Pregnant women should avoid any vaginal irrigation. When applying vaginal irrigation, low pressure must be exerted to prevent the liquid from ascending to the uterus, whose cavity is usually closed by the cervix. It is recommended that vaginal irrigation be applied under medical supervision.
DISCLAIMER: All content on this website is presented solely for educational and informational objectives. Do not rely on the information provided as a replacement for advice, diagnosis, or treatment from a qualified medical expert. If you are pregnant, nursing, or have any preexisting medical concerns, talk to your doctor before using any herbal or natural medicines.
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