essential oils Archives - Herbal Encyclopedia

St. John’s Wort

December 30, 2010 By Cloverleaf Farm

Botanical Name

Family Guttiferae [Hypericaceae]
Hypericum perforatum

Common Names

Hardhay, Amber, Goatweed, Klamath Weed, Tipton Weed, St. John’s Word, St. Johnswort, Witches’ Herb, Y Fendigedig (Welsh), Balm of Warrior’s Wounds, Devil’s Scourge, Touch and Heal, Lord God’s Wonder Plant, st johns wort, St. John’s wort.

Cautions

It can cause dermatitis or photo-sensitivity after taking it internally and then exposing the skin to the sun.

Contact dermatitis can be caused if handling the plant in moist, but sunny, conditions.

Drug Interactions: Do not take in conjunction with MAO inhibitors or other antidepressants, including Prozac, Paxil, Zoloft, lithium, Demerol, or destromethorphan, a common ingredient in cough syrups. The combination can result in a very dangerous reaction called serotonin syndrome, marked by a high fever, confusion, muscle rigidity, diarrhea, and possible death.

Description

Native to Britain and Europe, the herb now grows wild throughout most of the world. It is found in meadows, on banks, and by roadsides, preferring chalky soils and sunny positions. The herb is an erect perennial that grows to about thirty-two inches and produces bright yellow flowers that form in a flat-topped cluster and display tiny black dots on the petals and sepals. The flowers are harvested in mid-summer.

History

Since at least the 5th century BCE, the herb has had a reputation as a wound herb. It is said that the herb was given its name from the Knights of St. John’s of Jerusalem who used it to treat wounds on the Crusades battlefields.

It is also said that it received its name from squeezing the dots on the flowers. When squeezed, the dots ooze a red pigment that is said to represent the blood of St. John the Baptist. The plant traditionally blooms by June 24, which is also associated with John the Baptist, according to the Catholic calendar.

It was believed that the herb dispelled evil spirits, and the insane were often forced to drink infusions made from the plant.

According to the Doctrine of Signatures, because the herb was yellow, it was associated with “choleric” humors and used for jaundice and hysteria.

Old herbals often refer to Tutsan (H. androsaemum) from the French toutsain, or heal-all, which was also used to treat injuries and inflammations.

Although it fell into disuse in the 19th century, it has recently regained prominence as an extremely valuable remedy for nervous problems.

Used for hundreds of years by the Klamath, Nez Perce, Umatilla, Yakima, and other Native American tribes, this herb has a calming effect on the nerves, but is also considered a stimulant by some herbalists.

Dioscorides, Paul of Aegina, Pliny, Galen have all referred to the plant as one that relieves excessive pain, removes the effects of shock, and has a tonic effect on the mind and body. As such, it is especially valuable for post-surgical pain.

When it arrived in the New World, it quickly took over vast tracts of land, especially in the Pacific Northwest where it was known as the Klamath weed. Cattle loved, it but those that ate large quantities became sun-sensitive and ultimately developed severe sunburn. When herbacides failed to control its growth in 1946, an Australian beetle, that also loves the herb, was imported; and, within a decade, the weed was declared under control. As with anything introduced against nature, the beetle thrived to the point that it is now threatening commercial growths now that the herb has become popular.

Key Actions

astringent
analgesic
anti-inflammatory
antidepressant
antispasmodic
antiviral
antibacterial
antidiarrheal
antitumor
restorative tonic for the nervous system
sedative
stimulates bile flow

Key Components

glycosides
flavonoids (including rutin)
volatile oils
tannins
resins

Medicinal Parts

Aerial parts

A number of Hypericum species contain hypericin, but in smaller quantities than St. John s Wort.

St. John’s Wort and several Hypericum species have shown antitumor activities in animals and at least seventeen species have demonstrated antibacterial properties in vitro. Some species show antifungal activity and at least seven show antiviral properties.

Extracts of H. perforatum have produced antidiarrheal, sedative, antitumor, and diurectic actions.

Hypericin, an active substance in the herb, is thought to increase circulating levels of serotonin, a neurotransmitter instrumental in controlling mood by selectively preventing its reuptake by cells. This mechanism of action is similar to that of Prozac, Zoloft, and other antidepressants. It may also inhibit MAO, a brain enzyme that destroys seratonin, epinephrine, and dopamine, the mood-elevating neurotransmitters.

Remedies

Infusions are used for anxiety, nervous tension, irritability or emotional upsets, especially if associated with menopause or premenstrual syndrome.

Tinctures are taken for at least two months for long-standing nervous tension leading to exhaustion and depression. They are also used in cases of childhood bedwetting.

Washes from infusions are used to bathe wounds, skin sores, and bruises.

Creams made from the flowering tops are used for localized nerve pain (sciatica, sprains, and cramps) or to help relieve breast engorgement during lactation. The cream can also be used as an antiseptic and styptic on scrapes, sores, and ulcers.

Infused oils from the flowering tops can be used on burns and muscle or joint inflammations, including tennis elbow, neuralgia, and sciatica. A few drops of lavender oil can be added for burns, or mixed with yarrow oil to treat joint inflammations.

Traditional Uses

The red colour of the infused oil is caused by hypericin, which is strongly antidepressant and so strongly antiviral that it is being researched for treatment of the AIDS virus. It is also an excellent antiseptic, and used on wounds, burns, and to relieve cramps and nerve pain.

It is one of the most valuable European medicinal plants for nervous problems. Herbalists have long used it to treat anxiety, tension, insomnia, and depression especially associated with menopause.

Although widely used to treat depression, it is also helpful in alleviating fatigue and seems effective in helping menstrual cramps and PMS.

There is also some evidence that it can fight HIV. Contemporary herbalists are now using it to treat AIDS and other immunosuppressed conditions.

It is also a valuable tonic for the liver and gallbladder.

Infused oil is useful in treating gastric inflammation and peptic ulcers. Infused oil from these yellow flowers turns a blood-red during the steeping process. Cold-pressed safflower, walnut, or sunflower oil is used then left in the sun for a few weeks (usually about six).

Learn more about St. John’s Wort including drug interactions on our Cloverleaf Farm Blog.

View St. John’s wort products at Cloverleaf Farm.

Rose

December 28, 2010 By Cloverleaf Farm

Botanical and Common Names

Family Rosaceae
Rosa species
R. canina (Wild Rose, Dog Rose, Rose Hip, Brier Hip, Hip, Brier Rose, Eglantine Gall, Hogseed, Dog-berry, Sweet Brier, Witches’ Brier, Hep Tree, Hip Fruit, Hop Fruit, Hipberries)
R. arkansana (Prairie Wild Rose, Sunshine Rose, Arkansas Rose, Meadow Rose, Pasture Rose)
R. laevigata (Cherokee Rose)
R. gallica var. centifolia (Apothacary’s Rose, French Rose, Cabbage Rose, Hundred-leafed Rose)
R. damascena (Damask Rose)
R. rugosa (Rugosa Rose, Saltspray Rose, Beach Tornado)
R. multiflora (Japanese Rose)

Cautions

Use only the rose species listed here for medicinal purposes and not garden hybrids.

Because of the high price of rose oil, adulteration is common. Therefore, for medicinal purposes, use only the best high quality, genuine rose oil.

Consumers should be aware of the fact that much of the natural vitamin C in some rosehip products is lost in the manufacturing process. To compensate, some fortify the products with artificial vitamin C.

Description

Rose species are native to various places, but most are from the Middle East. They have been cultivated for thousands of years, but some can still be found in the wild although most are cultivated for commercial or private use. Typically, roses are climbing or bushy perennials with thorny stems and varying shapes and colours of flowers. All have a unique rose scent. The wild roses typically grow everywhere on the prairies of North America in ravines and stream banks, bluffs, thickets, and along roadsides and railroads.

History

In the 1st century CE, Pliny the Elder recorded thirty-two different medicinal uses of the rose.

Roses were grown in medieval gardens more for medicine and food than for beauty.

Ironically, the Cherokee rose is native to China, but now grows throughout much of North America and is the state flower of Georgia. It was used in China to treat diarrhea.

In the 19th century, it was proven that roses contain essential oils. Rose oil is distilled from the petals and used in aromatherapy.

With the discovery of vitamin C in the 1930s, and subsequent claims by Linus Pauling that massive doses of the nutrient could cure the common cold, rosehips have been of much interest because of their high content of this nutrient.

Unlike Western medicine, all indigenous cultures believe that there is no separation between the physical and the mental or spiritual being, and both must be assessed before healing occurs. The same belief has long been held true regarding the rose and is seen in this saying, “Roses are good for the skin and the soul”.

The botanical name of the Wild Rose is reflected in its use by the Romans. R. canina species was used for rabid dog bites.

Roses continued as official medicine until well into the 1930s (British Pharmacopoeia) when the tincture of the Apothocary’s Rose was prescribed for sore throats. Roses were also widely used as mild astringents and to flavour other medicines.

There were dozens of varieties of roses in North America. The Native Americans learned how to use whatever grew in their region, as a medicine and, in cases of emergency, as a food. The leaves, petals, hips, and roots were widely used for a variety of conditions, including colds, fevers, diarrhea, influenza, and stomach troubles.

The Omahas steeped the hips or roots to make a wash to treat eye inflammations.

In the Great Lakes region, the Chippewas made a tea from the wild rose and used the berries for food and for diseases of the eye. They used the inner bark of the roots to treat cataracts.

The Pawnees collected the insect galls from the lower parts of the stems, and charred and crushed them for use in dressings for burns. The insect or disease-produced galls were found in the archaeological remains of the Hill Site, near present-day Guide Rock, Nebraska, which was occupied by the Pawnees in the early 1800s.

The Flathead and Cheyenne tribes treated snow blindness with an eyewash made by boiling the petals, stem bark, or root bark. The Cheyenne also boiled the inner bark to make a tea valued for treating diarrhea and stomach trouble.

Many other tribes used all parts of the plant for various remedies. The Crows boiled the crushed roots and used them in hot compresses to reduce swellings. They also sniffed vapor to stop bleedings from the nose or mouth.

The Arapahos used the seeds to produce a drawing effect for muscular pain.

Key Actions

antidepressant
antispasmodic
aphrodisiac
astringent
antibacterial
antiviral
antiseptic
anti-inflammatory
blood tonic
cleansing
digestive stimulant
expectorant
increases bile production
kidney tonic
menstrual regulator

Key Components

volatile oil
vitamins and minerals (especially A, B, E, and K, potassium and iron)

Medicinal Parts

Flowers, petals, rosehips, root, root bark, essential oil

There are some 300 chemical constituents of which only about 100 have been identified.

Depending on the source, some rose teas are able to supply as much as 1000 mg. per cup. Recent studies now indicate that taking more than 2000 mg. of vitamin C per day changes the vitamin into a pro-oxidant that actually increases cellular damage caused by unstable free radicals. Other experts seem to think that this action takes place with as little as 1000 mg. of vitamin C per day.

Remedies

The seeds of the Japanese rose are used in Oriental medicine as a diuretic and laxative.

Infusions of dried rose petals are used for headaches and taken after meals to aid digestion.

Steam inhalation of a decoction of rose petals, lavender, and hops help induce sleep.

Compresses soaked in infusions of the dried flowers make a good anti-inflammatory remedy for the eyes or any other inflamed area of the body and applied cool for headaches.

Rosehip tincture is an effective astringent for treating diarrhea or in relieving colic or as a component in cough remedies.

Rosehip syrup is used as a cough remedy or taken as a source of vitamin C.

Rosehip decoction is taken with other herbs to treat chronic diarrhea associated with stomach weaknesses.

Flower decoctions are taken with motherwort for heavy menstruation or combined with Chinese herbs for liver dysfunctions.

Tinctures from the petals are used for diarrhea or sluggish digestion. When combined with other herbs, they areused to treat irregular or heavy menstruation.

Gargles made from petal infusions, used alone or combined with sage, are used for sore throats.

Creams from the essential oil are used to treat dry or inflamed skin.

Lotions from the essential oil are combined with lady’s mantle tincture for vaginal itching.

Rosewater combined with equal amounts of witch hazel is used as a moisturizing lotion for skin prone to pimples or acne. (Rosewater is a by-product of the steam distillation of Bulgarian rose oil and is used as a skin remedy.)

A few drops of essential oil can be added to bathwater for depression, grief, or insomnia.

Massage oil is made by mixing a few drops of essential oil with a neutral oil and used to relieve stress and exhaustion or for sluggish digestion.

Traditional Uses

The dried hips of the wild rose are especially high in vitamin C, having three times that of citrus fruits, and have long been used to prevent scurvy.

The Chinese use the flowers as a qi or energy stimulant and blood tonic to relieve stagnant liver energies. They are also used for digestive irregularities or with motherwort for heavy menstruation.

The Damask rose blooms for only a couple of weeks, during which time the petals are collected and steam distilled to produce true Bulgarian rose oil used in about 96% of all women’s perfumes. Medicinally, it is an important nervine used for depression and anxiety.

The cabbage rose is used to produce French rose oil, which differs significantly in its chemical composition from Bulgarian rose oil and has a reputation as an aphrodisiac.

Search Cloverleaf Farm for Rose

Lavender

December 27, 2010 By Cloverleaf Farm

Botanical Names

Family Labiatae
Lavandula officinalis syn. Lavandula angustifolia

Common Names

Garden Lavender, French Lavender, True Lavender, Aljucema (Spanish)

Cautions

Avoid high doses during pregnancy as it is a uterine stimulant.

Lavender contains limonene which can cause photosensitivity, especially when perfumes and cosmetics are used containing lavender oil.

Full-strength lavender oil should not be applied directly to the skin, but should be diluted in a carrier, or neutral, oil.

Description

Native to France and the western Mediterranean, it is now cultivated worldwide for its volatile oil. It is grown as a garden plant as far north as Norway. Lavender is a perennial shrub, growing to about three feet, producing spikes of violet-blue flowers that extend above the foliage. Some varieties have flowers of pale pink, dark purple, white, or magenta and are harvested toward the end of flowering season when the petals have begun to fade. They are generally picked by the end of July to obtain maximum strength in its essential oils, with sixty pounds of flowers yielding about sixteen fluid ounces of oil.

History

One of the most popular medicinal herbs since ancient times, its name is derived from the Latin lavare, meaning to wash. The Greeks and Romans were fond of it in their bath water.

Since ancient times, the oil has been used to kill lice and fleas and as an embalming fluid.

In Arab medicine, it was used as an expectorant and antispasmodic

In European folk medicine, it was regarded as a useful wound herb and a worm remedy for children.

It became popular as a medicine during the late Middle Ages and taken to the New World by Pilgrims in 1620.

As a strewing herb, lavender was popularly used to mask the smells of households and streets.

The glovers of Grasse used the oil to scent their fashionable leather and were remarkably free of the plague. This encouraged others to use the herb to ward off the pestilence.

The medical properties of lavender have been noted in the earliest English herbals and in the British Pharmacopoeia for about 250 years.

Key Actions

antiseptic
antidepressant
antibacterial
analgesic
antispasmodic
circulatory stimulant
carminative
nervous system tonic
promotes bile flow
relaxant

Key Components

volatile oil (up to 3% of over 40 constituents including linalyl acetate [30-60%], cineole [10%], linalool [20-50%], nerol, borneol and others)
coumarins (including umbelliferone and herniarin)
tannins
caffeic acid derivatives (including rosmaric acid)
flavonoids
triterpenoids

Medicinal Parts

Flowers, essential oil

Linalyl ester is the major component of bergamot and is also responsible for the aroma and medicinal qualities of the plant.

Tannins have antibacterial properties that are useful in treating minor skin wounds.

A small British study found that lavender was more effective than a pharmaceutical sleep drug in helping nursing home patients obtain a more restful sleep.

Remedies

An infusion from the flowers is taken for nervous exhaustion, tension headaches, during labour, for colic, and for indigestion. A weak infusion (25% normal strength) is given to babies for colic, irritability, and excitement.

A tincture from the flowers is taken for headaches and depression.

Creams made from the essential oil are used on the skin and are made by adding a few drops of oil to another cream, as chamomile cream, for eczema.

A lotion is made in the same way, only adding a little of the oil to water for sunburns and scalds.

A chest rub is made with essential oil, chamomile oil, and a carrier oil for asthma and bronchitis spasms.

The essential oil can be diluted in water and used on the hair to treat lice or placed on a fine comb for nits.

A massage oil is made by adding a little essential oil to a carrier oil and massaging into painful muscles or the temples and nape of the neck for tension headaches or the first hint of a migraine.

The essential oil can be diluted and used for insect bites and stings, or mixed with a carrier oil to prevent sunburn and to treat heatstroke. However, it is not meant to be a sunblock, and does not function as one.

Traditional Uses

Lavender is well-known for its soothing and calming effect; and, when combined with other sedative herbs, relieves insomnia, irritability, headaches, migraines, and depression. Medicinally, lavender has many uses, especially in aromatherapy, and is used by midwives, massage therapists, and some hospitals.

Its significant amounts of volatile oil soothes indigestion and colic, relieving gas and bloating.

It is also used to treat asthma and, through its relaxing effects, is especially effective when excessive nervousness is the trigger.

The essential oil is strongly antiseptic and a valuable first aid remedy helpful in treating minor burns, wounds, and sores. It is also effective on insect stings as it relieves the pain and inflammation.

The dried flowers are often hung in rooms to perfume the air and repel moths and other insects.

When placed near or inside a pillow, dried lavender helps promote a restful sleep. A few drops in the bathwater can relieve tension and mild depression, while promoting sleep.

Added to cool bathwater, it becomes an energizing stimulant.

Drops of lavender oil are sometimes added to water and used as an astringent for cleaning the face and treating acne.

In Mexico, lavender is used in a tea to treat indigestion, and burned in a type of aromatherapy. Smudge sticks are made from bundles of the plant and burned to fumigate sick rooms. New mothers are purified with it after childbirth.

In Spain and Portugal, L. stoechas is used as an antiseptic wash for wounds, ulcers, and sores; but its oil is inferior to that of L. officinalis. Although L. spica (Spike lavender) yields more oil than L. officinalis, it is also of an inferior quality.

The English and French varieties are especially prized for their essential oils, which are used in perfumes, cosmetics, skin care products, and air fresheners.

Feverfew

December 23, 2010 By Cloverleaf Farm

Botanical and Common Names

Family Asteraceae (formerly Compositae)
Chrysanthemum parthenium syn. Tanacetum parthenium (Feverfew, Featherfew, Featherfoil, Midsummer Daisy)
Spanish: Altamisa Mexicana, Santa Maria, Yerba de Santa Maria

Cautions

Do not take during pregnancy.
The plant is restricted in some countries because it carries a risk of toxicity and should be used only under the guidance of a knowledgeable herbalist.
Some experts warn against taking feverfew along with such blood-thinning drugs as aspirin and warfarin (Coumadin), antimigraine drugs, high doses of vitamin E, ginkgo biloba, calcium channel blockers, and ticlopidine (Ticlid).
Since feverfew has a mild anticoagulant effect, combining it with anti-clotting products may result in bleeding problems.

Description

Native to southeastern Europe, feverfew is now common throughout Europe, Australia, and North America. Tansy is found throughout the temperate zones in the northern hemisphere, growing in open areas, along roadsides, and close to water.

Both are herbaceous perennials growing to two or three feet in height and producing numerous strongly aromatic, clusters of yellow, daisylike flowers. They also have an erect stem and feathery compound leaves. Feverfew is a close relative of chamomile and is often confused with chamomile; but, unlike chamomile, whose flowers contain medicinal oils, the therapeutic ingredients of feverfew are found in the leaves. The leaves are picked as required, while the aerial parts, as a whole, are harvested in summer when the plant is in flower.

History

The name feverfew is derived from the Latin term febrifugia, which means to “drive out fevers”.

The use of feverfew as a migraine remedy is credited to the wife of a Welsh doctor. It is said that she ended her 50-year history of such headaches with a course of feverfew.

It has been used since Roman times to induce menstruation and given during difficult birth to aid in the expulsion of the placenta.

Dioscorides, an ancient Greek physician, gave it to women during childbirth to increase uterine contractions and to speed the birth process.

Culpeper stated, in 1653, that the main use for the herb was for women’s complaints.

For centuries, it was used to lower fevers, treat infant colic, depression, vertigo, kidney stones, and constipation. It is also used as an insect repellent and to treat minor skin wounds and to relieve the pain of arthritis.

Although not mentioned in surviving classical texts, tansy was described by medieval herbalists, notably Hildegard of Bingen in the 12th century and onward. It has since been the most common worm-expelling plant used.

Gerard also wrote that feverfew was an effective headache remedy.

Cotton Mather, an American clergyman and writer of the 1700s, recommended chewing feverfew to ease a toothache.

Key Actions

analgesic
antirheumatic
bitter
promotes menstral flow
reduces fever

Key Components

volatile oil (alpha-pinene)
sesquiterpene lactones (parthenolide)
sesquiterpenes (camphor)
vitamins and minerals (especially niacin and thiamin, chromium, magnesium, manganese, phosphorus, potassium, and selenium)

Medicinal Parts

Aerial parts

A detailed scientific investigation in Britain, in the 1980s, demonstrated its effectiveness for migraine headaches, reducing the number and severity of these attacks, as well as the degree of vomiting that often accompanies the condition. They found that parthenolide works against migraine headaches by reducing blood platelet activity and the release of histamines and prostaglandins, body chemicals that are instrumental in the inflammation and sudden widening of the blood vessels in the head. It also helps prevent the fluctuations in levels of serotonin, another chemical that is instrumental in migraine symptoms. These substances and effects may also explain the herb’s ability to reduce menstrual cramps and to relieve arthritic pain and inflammation.

Feverfew seems to be more effective as a preventative rather than relieving full-blown symptoms of migraine headaches. While the vomiting and other symptoms were milder, there was no change in the duration of the headaches according to one study. It should be noted that the quality of many commercial feverfew products is very uneven. Some lab analysis found little or none of the active ingredient, parthenolide.

Traditional Uses

As a preventative for migraines and as an alternative to taking pills that may have little or none of the active ingredients, it is recommended that chewing two or three of the dried leaves per day would be a better choice, although regular use can cause mouth ulcers. At such times, it would be best to switch to a tea.

Feverfew can be a mild sedative and euphoric and is occasionally added to compounds for the relief of nervous tension. In large doses, it can sedate those suffering from nervous hysteria, but may produce some side effects. However, moderate doses are completely safe.

Strong teas made from the leaves are used to treat skin inflammations and minor wounds.