The eucalyptus tree is a large, fast-growing evergreen that is native to Australia and Tasmania. The tree can grow to 375-480 feet (125-160 meters). Eucalyptus belongs to the myrtle (Myrtaceae) family. There are more than 300 species of eucalyptus, and Eucalyptus globulus is the most well-known species. One species (E. amygdalin) is the tallest tree known in the world. The tree grows best in areas with an average temperature of 60°F (15°C).







Eucalyptus globulus


The Australian aborigines have used eucalyptus for hundreds of years as a remedy for fever, wounds, coughs, asthma, and joint pain. Australian settlers named the eucalyptus the fever tree because of its disease- fighting properties. Baron Ferdinand von Miller, a German botanist and explorer, was responsible for making the properties of eucalyptus known to the world in the mid-1800s.

Likening eucalyptus’ scent to that of cajaput oil (a disinfectant), von Miller suggested that eucalyptus might also be used as a disinfectant in fever districts. Seeds of the tree were sent to Algiers, France and planted. The trees thrived and, because of the drying action of the roots, turned one of the marshiest areas of Algiers into a dry and healthy environment, thereby driving away malaria-carrying mosquitoes.

Eucalyptus trees were then planted in temperate areas around the world to prevent malaria. As a result, eucalyptus trees are now cultivated in China, India, Portugal, Spain, Egypt, South and North Africa, Algeria, South America, and in the southern portion of the United States.

Commercial production of eucalyptus began in Victoria, Australia in 1860. The nineteenth century eclectic doctors adopted eucalyptus as a treatment for fevers, laryngitis, asthma, chronic bronchitis, whooping cough, gonorrhea, ulcers, gangrenous tissue, edema, and gastrointestinal disturbances. European doctors used eucalyptus oil to sterilize their surgical and medical equipment. Eucalyptus leaves were often made into cigars or cigarettes and smoked to relieve asthma and bronchial congestion.

Modern medicines around the world have included eucalyptus in their practices. Indian ayurvedics use eucalyptus to treat headaches resulting from colds. Eucalyptus is listed in the Indian Pharmacopoeia as an expectorant and in the Chinese Pharmacopoeia as a skin irritant used in nerve pain.

In France, eucalyptus leaves are applied topically to relieve congestion from colds and to treat acute bronchial disease. A standardized eucalyptus tea is licensed in Germany to treat bronchitis and throat inflammations. Eucalyptus is also an ingredient in German herbal cough preparations. The German Commission E has approved the internal use of eucalyptus to treat congestion of the respiratory tract, and the external use to treat rheumatic complaints.

In the United States, eucalyptus is a component of many decongestant and expectorating cough and cold remedies, such as cough drops, cough syrups, and vapor baths. Eucalyptus is often used in veterinary medicine. It is used to treat horses with flu, dogs with distemper, and to treat parasitic skin conditions.

General use 

Eucalyptus is most popular for its ability to clear congestion due to colds, coughs, flu, asthma, and sinusitis. The tannins found in eucalyptus have astringent properties that reduce mucous membrane inflammation of the upper respiratory tract. Eucalyptol, the chemical component of the oil, works to loosen phlegm.

Cough drops containing eucalyptus promote saliva production, which increases swallowing and lessens the coughing impulse. Earaches can also be treated with eucalyptus. When inhaled, the eucalyptus fumes open the eustachian tubes, draining fluids and relieving pressure. Eucalyptus enhances breathing, which makes it an effective remedy for asthma, bronchitis, sinusitis, whooping cough, and colds.

Eucalyptus is a component of many topical arthritis creams and analgesic ointments. When applied to the skin, eucalyptus stimulates blood flow and creates a warm feeling to the area, relieving pain in muscles and joints.

The oil extracted from the eucalyptus leaf has powerful antiseptic, deodorizing, and antibacterial properties. It is especially effective in killing several strains of Staphylococcus bacteria. A mixture of 2% eucalyptus oil evaporated in an aroma lamp has been shown to destroy 70% of the Staphylococcus bacteria in the affected room.

When the oil is applied to cuts, scrapes, and other minor wounds, it inhibits infections and viruses. A 2002 report out of Australia made researchers around the world take note when two cases of patients with staph infections resistant to traditional antibiotic therapy responded to a mixture of eucalyptus leaf oil abstract. The Australian researchers recommended formal clinical trials to test the therapy, based on an ancient aboriginal remedy. Eucalyptus also fights plaque-forming bacteria and is used to treat gum disease and gingivitis.

In large doses, the oil can be a kidney irritant and can induce excretion of bodily fluids and waste products. Eucalyptus oil added to water may be gargled to relieve sore throat pain or used as a mouthwash to heal mouth sores or gum disorders. Consequently, eucalyptus is an ingredient in many commercial mouthwashes.

Eucalyptus’ pain-relieving properties make it a good remedy for muscle tension. One study showed that a mixture of eucalyptus, peppermint, and ethanol oils successfully relieved headache-related muscle tension.

Eucalyptus may lower blood sugar levels. Placing a drop of the oil on the tongue may reduce nausea. The oil has also been used to kill dust mites and fleas.

Eucalyptus oil is one of the most well-known fragrances in aromatherapy. Two species of eucalyptus are used in aromatherapy oils: E. globulus and E. citriodora. The essential oil of eucalyptus is used to relieve cramps, cleanse the blood, heal wounds, disinfect the air, and to treat conditions such as asthma, bronchitis, throat and sinus infections, fevers, kidney infections, rheumatism, bladder infections, and sore muscles.

The essential oil can be diluted and added to a massage oil to ease aching muscles. The oil can be added to hot water and inhaled to reduce nasal congestion. It can also be diffused in the room of a sick patient to disinfect the air.

Some believe that inhaling the diffused oil can enhance concentration and thought processes. Studies have shown that inhalation of the cineole compound of eucalyptus stimulates coordination and motor activities in mice. Eucalyptus oil may also uplift the spirit during times of emotional overload or general sluggishness.

Applying a diluted oil to the skin instead of inhaling it increases the rate of absorption into the blood. Often the speed with which it is absorbed is so fast, the odor can be detected on the breath within minutes.

The oil is also an effective febrifuge, and a cold compress with eucalyptus oil added to it has a cooling effect that is useful in helping to reduce a fever. The essential oil of eucalyptus is also used to treat wounds, herpes simplex virus, skin ulcers, and acne. Combined with water, the oil makes an effective insect repellant. Because of its skin-moistening properties, the oil is often an ingredient in dandruff shampoo.

Eucalyptus oil may be combined with other oils that have similar properties, such as niaouli, pine, Swiss pine, hyssop, and thyme oils. It also mixes well with lemon, verbena, balm, and lavender oils.


Eucalyptus is available as a tincture, cream, ointment, essential oil, or lozenge. Many health food stores carry fresh or dried eucalyptus leaf in bulk. Eucalyptus can be ingested through the use of teas or tincture preparations, inhaled, or applied externally.

Eucalyptus infusion is ingested to treat coughs, colds, bronchitis, congestion, and throat infections. To create an infusion, 1 cup of boiling water is poured over 1-2 teaspoons of crushed eucalyptus leaves. The mixture is covered and steeped for 10 minutes and is then strained. Up to 2 cups can be drunk daily.

Inhaling eucalyptus vapors is beneficial for sinus and bronchial congestion that occurs with bronchitis, whooping cough, colds, asthma, influenza, and other respiratory illnesses. A drop of eucalyptus oil or two to three fresh or dried leaves are added to a pan of boiling water or to a commercial vaporizer. The pan is removed from the heat, a towel is placed over the pan and the patient’s head, and the patient inhales the rising steam. Patients should close their eyes when inhaling the steam to protect them from eucalyptus’ strong fumes.

For healing wounds and preventing infection, the wound is washed and then diluted eucalyptus oil or crushed eucalyptus leaves are applied to the affected area.

For relief of muscle aches or arthritis pain, several drops of the diluted oil are rubbed onto the affected area, or a few drops of diluted oil are added to bath water for a healing bath. Adding eucalyptus leaves wrapped in a cloth to running bath water is also effective.

For gum disease, a few drops of diluted oil are placed on a fingertip and massaged into the gums.

Tinctures should contain 5-10% essential oil of eucalyptus. A person can take 1 ml three times daily.

Ointments should contain 5-20% essential oil of eucalyptus. The person should use as directed for chapped hands, joint and muscle pains, and dandruff.


Children or infants should not be treated with eucalyptus. Of special note, eucalyptus oil should not be applied to the facial areas (especially the nose or eyes) of small children or infants. Pregnant or breast-feeding women should not use eucalyptus.

People with digestive problems, stomach or intestinal inflammations, biliary duct disorders, or liver disease should not take eucalyptus.

Undiluted eucalyptus oil should never be ingested. Small amounts of undiluted oil (even in amounts as little as one teaspoon) are toxic and may cause circulatory problems, collapse, suffocation, or death. Eucalyptus oil should always be diluted in a carrier oil such as almond, grapeseed, or other vegetable oil before applying to the skin.

Side effects

Nausea, vomiting, or diarrhea may occur in rare cases. Applying eucalyptus to the skin may cause a rash in those who are sensitive or allergic to eucalyptus.


Eucalyptus works to detoxify the body. If it is used simultaneously with other drugs, the effects of those drugs may be weakened.

Eucommia bark

Eucommia ulmoides



Although traditionally only the bark of E. ulmoides was used for healing, research in the later half of the 1990s in Japan indicates that the leaves also have healing properties. The green leaves are shiny, narrow, and pointed. The tree’s flowers are very small and are not used in healing.

General use





Eucommia bark











Side effects


Evening primrose oil

Evening primrose flowers

Evening primrose (Oenothera biennis) is a tall, hardy, native biennial of the Onagraceae family. Its Latin name is derived from the Greek word oinos for wine and thera for hunt and reflects the folk belief that the herb could minimize the ill effect of over-indulgence in wine following a hunt.

The plant thrives in dry, sunny meadows, and is abundant in many parts of the world. The leaves of the firstyear plant form a bright-green, basal rosette. In the second year, the coarse, erect stalk reaches up to 4 ft (1.2 m) with hairy, alternate, lanceolate leaves with a distinctive mid rib. Leaves grow from 3–6 in (7.6–15.2 cm) long.

The blossoms are pale yellow with a slight lemon scent and a cup-like shape. They grow in clusters along the flower stalk, and bloom from June to September, opening at dusk to attract pollinating insects and night-flying moths. These phosphorescent blossoms inspired a common name for the herb: evening star. The seeds grow within an oblong, hairy capsule. The root is large and fleshy.

General use

The medicinal components of evening primrose are found in the seed-extracted oil, which contains essential fatty acids including gamma linoleic acid (GLA). GLA is often deficient in the Western diet and is needed to encourage the production of prostraglandins. Low levels of essential fatty acids may increase the symptoms of premenstrual syndrome (PMS), diabetes, etc. Evening primrose oil has been used to treat PMS and menopausal symptoms, asthma, and has been shown to reduce high blood cholesterol levels.

Research conducted in Great Britain has indicated that evening primrose oil can also be medicinally useful in the treatment of nerve disorders, such as multiple sclerosis and rheumatoid arthritis.

The essential oil does appear to be of some benefit in cases of alcohol poisoning and in alleviating hangovers, and to ease symptoms of alcohol withdrawal. The oil can also help relieve dry eyes, brittle nails, and acne when combined with zinc. When taken as a supplement, evening primrose has helped to promote weight loss.

Traditionally, Native Americans valued evening primrose as a treatment for bruises and cuts. The Flambeau Ojibwe tribe soaked the whole plant in warm water to make a poultice for healing bruises and to overcome skin problems.

Oenothera biennis

The mucilaginous juice in the stem and leaf can be applied externally to soothe skin irritations, or may be eaten to relieve digestive discomfort and for its stimulating effect on the liver and spleen. The astringent properties of the plant are helpful to soothe inflamed tissue. The plant has sedative properties and has been used to decrease hyperactivity in children.

The entire plant is edible. The root from the firstyear growth is a nutritious pot herb. Boiled roots taste somewhat like parsnips.

Evening primrose oil is valued for its antioxidant properties. Antioxidants are substances that counteract the damaging effects of oxidation in living tissue. A team of Canadian researchers has recently identified the specific antioxidant compounds in evening primrose oil; one of them, a yellow substance known as catechin, appears to inhibit the growth of cancerous tumors and to lower the risk of heart disease.


Evening primrose oil is prepared commercially and widely available in health food stores. The extract should be stored in a cool, dry place in order to avoid spoilage. Capsules are also available. Correct dosage should be decided in consultation with a practitioner.

An ointment can be prepared by mixing one part of the diced plant with four parts of heated petroleum jelly. Stored in a tightly closed container and refrigerated, the consistent preparation will maintain its effectiveness. Apply as needed to soothe the skin.


Use by persons with epilepsy is discouraged because evening primrose oil appears to lower the effectiveness of medications used to treat epilepsy. Physicians should be consulted before using evening primrose oil on children.

Side effects

There have been some reports of headache, nausea, loose stools, and skin rash after using evening primrose preparations.

Evodia fruit

Evodia fruit




General use




Dried evodia fruit










Side effects

Herbalists consider evodia fruit mildly toxic.







Regular exercise as a way of promoting health can be traced back at least 5,000 years to India, where yoga originated. In China, exercises involving martial arts, such as t’ai chi, qigong, and kung fu, developed possibly 2,500 years ago. The ancient Greeks also had exercise programs 2,500 years ago, which led to the first Olympic games in 776 B.C. Other exercise routines have been in use throughout Asia for hundreds of years.

Only within the last 100 years have the scientific and medical communities documented the benefits that even light but regular exercise has on physical and mental health.

The earliest forms of exercise stressed activities that involved stretching and light muscle resistance. Next came martial arts that promoted self-defense. In nearly all forms of Asian exercise routines, some type of meditation was a major component because the ancients believed physical and mental health went together.

The ancient Greek and Roman civilizations advocated vigorous physical activity since exercise was associated with military training. The Greeks also believed that a healthy body would promote a healthy mind.

“Physical culture” was popular in the nineteenth and early twentieth centuries. Medical journals showed exercise machines in the 1800s in Europe and North America. Although weight training became popular with a small number of people in the 1940s, it was not until the 1960s that regular exercise programs began to flourish throughout the United States.

Gymnasiums, once used mainly by male weight lifters and boxers as training facilities, now are common throughout the United States. Today’s gyms and health clubs offer a wide range of exercise activities for men and women that can fit every lifestyle, age group, and exertion level.


The medical community recognizes that regular exercise, along with a proper diet, is one of the two most important factors in maintaining good physical and mental health, and in preventing and managing many diseases. Most certified physical trainers advocate at least 20 minutes of exercise at least three times a week. But for people who have a sedentary lifestyle, even walking for 10 minutes a day has health benefits. One study of 13,000 people followed for more than eight years showed that people who walk 30 minutes a day have a significantly reduced risk of premature death than people who did not exercise regularly.

Walking and other cardiovascular exercises can reduce the risk of heart disease, some cancers, hypertension (high blood pressure), arthritis, osteoporosis, stroke, and depression. A study by the Centers for Disease Control and Prevention (CDC) reported in 2001 that running just once a month could help keep bones strong. In addition to physical benefits, a 2001 study showed that exercising just 10 minutes a day can improve mental outlook.

A study released in 2003 reported that exercise combined with behavioral therapy may even help manage the symptoms experienced by Gulf War veterans. Specifically, exercise helped improve symptoms related to fatigue, distress, cognitive problems, and mental health functioning.

In the same year, the American Heart Association released a statement saying that exercise was beneficial even for patients awaiting heart transplants. Another study showed that women who participated in strenuous physical activity over a number of years could reduce their risk of breast cancer. Finally, research showed that men and women age 40 to 50 who exercised moderately for 60 to 90 minutes a day were less likely to catch a cold than those who sat around.


Exercise comes in many forms, but there are three basic types: resistance, aerobics, and stretching. Yoga and martial arts are basically muscle stretching routines, walking and running are primarily aerobic, and weight lifting is mainly resistance. However, exercises such as swimming are considered crossover activities since they build muscle and provide a good aerobic, or cardiovascular, workout. Certified physical trainers usually advocate a combination program that involves stretching, aerobics, and at least some resistance activity for 30-60 minutes a day three times a week.

Stretching and meditative exercises

The most common types of alternative health exercises are the ancient disciplines of yoga and the martial arts (such as t’ai chi and qigong).

YOGA. The ancient East Indian discipline of yoga is probably the most widely practiced exercise advocated by alternative health practitioners. This may be because there is a heavy emphasis on mental conditioning as well as physical exertion.

Yoga is the practice of incorporating mind, body, and spirit through a series of physical postures, breathing exercises, and meditation. It improves muscle flexibility, strength, and tone while calming the mind and spirit. Most contemporary stress reduction techniques are based on yoga principles.

There are a variety of yoga styles, each with its own unique focus. In the United States, hatha yoga is the most practiced. The pace is slow and involves a lot of stretching and breathing exercises. Much like the Chinese philosophy of yin and yang, hatha yoga strives to balance the opposite forces of ha (sun) and tha (moon).

Astanga, or power yoga, involves more intense yoga postures done in rapid succession. Its vigorous workout is especially good in developing muscle strength. Iyengar yoga promotes body alignment while kripalu yoga develops mind, body, and spirit awareness. Pranayama yoga is a series of breathing exercises designed to increase vitality and energy.

Yoga helps strengthen the heart and slow respiration. Studies have shown it is beneficial in treating a variety of conditions, including heart disease, hypertension, arthritis, depression, fatigue, chronic pain, and carpal-tunnel syndrome.

A 2001 study at the Cleveland Clinic Foundation in Ohio looked at yoga’s effect on people suffering from lower back pain and pain due to conditions like carpal tunnel syndrome and arthritis. After a four-week period, investigators noted that yoga helped lessen pain, improve participants’ moods and decreased pain medication requirements.

There are four main groups of yoga postures, also called asanas: standing, seated, reclining prone, and reclining supine. Other groups include forward bends, back bends, side bends, twists, inverted, and balancing. Within each group there are dozens of different yoga poses at beginning and advanced levels.

MARTIAL ARTS. While the words “martial arts” may be associated with conflict, they usually are graceful exercise movements that keep the body and mind strong and healthy. They can be performed by young and old. Martial arts range from simple stretching and meditative exercises to complicated and demanding exercises requiring more physical activity and mental concentration.

Probably the most popular among alternative health participants is t’ai chi, derived from the Chinese philosophy of Taoism and based on the concept of yin and yang. T’ai chi has a self-defense aspect based on counteracting an opponent’s attack and then counterattacking, all in the same movement. As an exercise to maintain health, t’ai chi strengthens muscles and joints. It requires deep breathing techniques that increase blood circulation, benefiting the heart, lungs, and other organs. New research states that t’ai chi may improve physical functioning, like bending and lifting, in older age.

Another martial art growing in popularity in the United States is qigong (pronounced chee kung), although it has several forms that are more Taoist and Buddhist than martial. Qigong is a gentle exercise program that can increase vitality, enhance the immune system, and relieve stress when performed regularly. In China, there are hospitals that use qigong to treat terminal illnesses, particularly cancer.

Cardiovascular and aerobic

Aerobic, also called cardiovascular, exercises use a variety of muscle groups continuously and rhythmically, increasing heart rate and breathing. Specific aerobic activities include walking, jogging, running, bicycling, swimming, tennis, and cross-country skiing. Another popular form is aerobic dance exercise. Routines should last 10-60 minutes and be performed at least three times a week. Aerobic exercise is especially beneficial for losing weight and building endurance.

Aerobic exercises can be done outside a formal setting, with little or no equipment. However, since boredom is a frequent cause for stopping exercise, it often is beneficial to participate in exercise classes or join a gym or health club. Exercising with a group often helps with motivation. Also, health clubs usually offer a variety of stationary aerobic equipment, such as bikes, treadmills, stair climbers, and rowing machines.


Resistance exercises generally are accomplished by lifting weights such as barbells and dumbbells, or by using a variety of resistance machines. They can also be done using only the body as resistance, such as doing push-ups, pull-ups, and sit-ups. Resistance exercise is particularly good for building muscles.

For patients with kidney disease, weight lifting offers added benefit. Chronic kidney disease can lead to muscle wasting, which is compounded by low-protein diets that may be described for these patients. A 2001 study demonstrated that resistance training can improve muscle mass in kidney disease patients.

Unlike aerobics, which can be done daily, weightlifting exercises require a period for the muscles to rest and rebuild. A total-body workout should be done every other day, or two to three times a week. A more advanced workout would exercise the lower body muscles one day and upper body muscles the next. It is also important to do 5-10 minutes each of warm-up and cooldown exercises, which will help increase flexibility and decrease soreness and fatigue.


No advance preparations are required for exercising. However, a trainer can test a person’s strength level and outline an appropriate program. Proper shoes are essential, especially for running. Any exercise should start with a warm-up of 5-10 minutes.

Anyone considering a regular exercise program should consult first with a doctor, and possibly a sports podiatrist, to avoid strain and injury. Persons with serious health problems, such as heart disease, diabetes, AIDS, asthma, and arthritis should only begin an exercise regimen with their doctor’s approval.


In most people, the main exercise precaution is to avoid strain and overexertion. Exercise doesn’t need to be strenuous to be beneficial. People with certain chronic health problems should take special precautions. Diabetics should closely monitor their blood sugar levels before and after exercising. Heart disease patients should never exercise to the point of chest pain.

Exercise can induce asthma. It is essential for people with asthma to get their doctor’s permission before starting an exercise program. It also is important for people to be shown the proper form in any activity to avoid strain and possible injury, especially when using exercise equipment. People also should know what parts of the body might be stressed by a particular exercise. They can then use supplemental exercises or stretches to add balance to the exercise program.

Side effects

The primary adverse effects of exercising can be sore muscles and stiff joints a day or two after beginning an exercise routine. These pains may last for several days. Other minor problems can include headaches, dizziness, fatigue, and nausea, usually indicating the exercise routine is too strenuous. A person can agitate old injuries or create new ones by improperly using equipment or wearing inadequately cushioned shoes.

Research & general acceptance

There almost is universal acceptance by allopathic and homeopathic health practitioners that exercise can be beneficial to overall good health. Thousands of studies during the past several decades link regular exercise to reduced risks for heart disease, stroke, diabetes, obesity, depression, hypertension, and osteoporosis. For example, a 1998 study by Harvard University of more than 11,000 people showed that people who exercise for an hour a day cut their risk of stroke in half over people who do not exercise regularly.

Training & certification

No special training or certification is required for exercising. People who want help in developing an exercise program should consult a certified physical trainer.