Dictionary of Medical Actions
This information is provided for educational purposes only and is not intended as a substitue for proper medical care. Do not self administer these or any other plants without further, more advanced study. Your health is the most important asset you have, please use good judgment.
Medical Definitions
Abortifacient Herbs thusly labeled are likely to cause a miscarriage and are considered highly dangerous after the first 12 weeks of pregnancy and dangerous during the first 3 months of fetal growth. Examples blue cohosh, ergot, goldenseal, tansy oil and valerian
Alterative These herbs function loosely as a tonic and produce a hastening of renewal and healing. Their effects are not directly observed since their active ingredients work specifically on the tissue. Red clover is currently being investigated by the medical community as a treatment for tumors; results are still pending though the outlook is promising. Examples burdock and elder
Anesthetic Similar to herbs termed anodynes, but stronger in their pain relieving effects. Rather than healing the source of the pain, anesthetics dull nerve endings causing them to lose sensation thus making the individual less aware of the pain. Examples birch bark, clove oil, and mandrake
Anodyne Like anesthetics, anodynes relieve pain but may be narcotic in effect. Examples belladonna, coca leaves, henbane, and white willow bark
Anthelmintic Herbs classed as anthelmintic contain active ingredients that expel and deter parasitic worms that attach to the intestinal walls. These parasites most often occur in tropical and subtropical climates, especially in malnourished communities. Examples flax seeds, tansy, and wormwood
Antiemetic These herbs actively aid digestion and alleviate indigestion and nausea. Not all herbs that possess antiemetic properties are safe and should be administered only under medical supervision. Examples clove, frankincense, and spearmint
Antiseptic Like commercially marketed antiseptics, herbs with antiseptic compounds combat and destroy or retard the growth of microorganisms that cause infection. Bactine is a common over the counter antiseptic that is topically applied to burns, cuts and abrasions. Examples basil, pennyroyal, and thyme
Antispasmodic Antispasmodic herbs are prescribed to calm muscles and stop spasms and convulsions. Many women choose to drink teas brewed from these herbs to ease menstrual cramping. Examples blue & black cohosh, eucalyptus, and valerian
Aperient More subtle acting and gentle than herbs classed as laxatives, aperients produce natural movement of the bowels. Examples dandelion, rhubarb
Aromatic The pleasing fragrance and flavor of aromatic herbs have led many of them into spice racks and teas. They are often used to mask the taste of less appealing herbs or to add special flavor to everyday dishes. Examples allspice, cinnamon, clove, and peppermint
Astringent Astringent herbs contract tissue and are ingredients in facial creams and washes used to tighten pores. They are also employed for their ability to halt bleeding. Examples agrimony, blackberry, sage
Cardiac As the name implies, these herbs have a direct effect on the heart. Individual effects vary widely from plant to plant and dosage should be exact. Medical supervision is strongly advised. Examples foxglove, tansy, yarrow
Carminative The active constituents in the herbs classified as carminative aid digestion, ease stomach ailments and relieve cramping and muscular tension. Many carminatives are also aromatic. Examples allspice, catnip, dill, and spearmint
Cathartic Use only in extreme situations and under medical guidance. These herbs stimulate intestinal secretions and cause severe movement of the bowels. Examples boneset, broom, and castor oil.
Demulcent The naturally occurring gums contained in these herbs sooth and relieve inflammation. They are often eaten after heavy dinners to aid digestion, but they may also be applied topically in the form of salves. Examples licorice root and marshmallow root.
Diaphoretic The effects of diaphoretic herbs are similar to sudorific herbs in that they stimulate perspiration but are generally less extreme. They are suggested to help bring down mild fevers. Examples angelica, catnip, pennyroyal
Diuretic Primarily used for kidney ailments, diuretics cleanse the organ by stimulating the need to urinate. Some people include them as part of purification regime, believing that they eliminate toxins in the body. Example agrimony, dandelion, elder, and fennel
Potentially Dangerous Herbs
Bloodroot promoted as an expectorant, purgative, stimulant, and plaque and cavity preventer, is used in such a range of does that it can be dangerous. It has cause death when used to induce vomitingChan su a topical aphrodisiac also known as stone, love stone, and rockhard, has been fatal when mistakenly ingested
Chaparral teas claimed to be an antioxidant and pain reliever, has caused liver failure, necessitating liver transplant
Coltsfoot used for respiratory problems, has caused liver problems
Comfrey used to promote wound healing has caused liver problems and cancer
Lobelia used to treat respiratory congestion, has lead to respiratory paralysis and death
Pennyroyal used to induce menstruation and treat colds, fevers and the flu, has caused liver failure, kidney failure, coma and death
Yohimbe bark used as an aphrodisiac and hallucination, has caused psychotic behavior
Emetic These herbs should be used only in extreme situation as they cause stomach contractions which induce vomiting. Individual effects vary from extreme to mild. Examples boneset, lobelia, vervain
Emmenagogue Used to promote menstruation, a number of these herbs also ease cramping. They should not be taken during pregnancy. Examples blue & black cohosh, pennyroyal, tansy
Emollient Emollients soften and sooth the skin and are key ingredients in commercial skin care products. Examples linseed, marshmallow, comfrey
Expectorant Over the counter cough medicines are often promoted for their expectorant, or cough inducing, properties. Expectorants work by loosening phlegm in the lungs and sinuses, which is then easily evacuated from the body. Examples boneset, horehound, and marshmallow
Febrifuge These herbs have the ability to lower body temperature and some stimulate the sweat glands. They are recommended in the case of fevers. Examples boneset, sage, wormwood
Haemostat As the prefix haemo implies, these herbs work on the blood. They have strong astringent qualities and quickly coagulate the blood; therefore they are sued to stop bleeding. Examples corn ergot, marigold, and sage
Hepatic These herbs function directly on the liver, cleaning and rejuvenating the organ. They are commonly associated with the ailment jaundice and hepatitis, which both stem from and affect the liver. Examples agrimony, celandine, tansy
Irritant Herbs affect individuals differently and great care should be taken when administering them either internally or externally. Some have clear skin irritating properties and should be used with knowledge and respect. Examples bryony, cayenne, mustard
Laxative Laxatives promote bowel action to a lesser extreme then purgatives and have recently become a means of weight loss for some. This practice is strongly advised against. Examples boneset, licorice root, mandrake
Mucilage Mucilage refers to the naturally occurring gum substance in certain plants. It is water soluble and creates a sticky compound which is soothing to inflammation and lubricating to the skin. Examples arrowroot, comfrey and marshmallow root
Narcotic The effects of narcotic herbs are almost immediately felt since they go to work directly on the nervous system. The most common example is nicotine, an active ingredient in tobacco. Generally narcotics are addictive, though some such as peyote and mescal are used by indigenous culture when embarking on a vision quest since they induce hallucinations.
Nervine Nervine constituents also work directly on the nervous system by calming nervous excitement and soothing the emotions. Many over the counter medication are touted as having these effects, but the same results can be made naturally by brewing a cup of tea from certain herbs. Examples chamomile, cinquefoil, lavender and marigold
Nutrient High in vitamins and minerals and more natural that chemically created vitamins, these herbs may be taken as a tonic to promote all around good heath. Examples dandelion and stinging nettle
Common Drugs Made from Plants
Aspirin from white willow bark and meadowsweet plantAtropine used to treat irregular heartbeat, made from belladonna leaves
Colchicine used for gout, made from autumn crocus
Digoxin (Lanoxin) the most widely prescribed heart medication is made from foxglove, a poisonous plant
Ephedrine used to widen or relax the airways, made from the ephedra plant
Morphine & Codeine potent narcotics made form the opium poppy
Paclitaxel (Taxol) used to treat metastatic ovarian cancer, made from the yew tree
Quinine a drug for treating malaria is made from cinchona bark
Vinblastine (Velban) & Vincristine (Oncovin) anticancer drugs
Pectoral Herbs falling under this classification work on the chest and lungs. Think pectoral muscles as a memory key. They are used to treat respiratory infections and are especially effective against chest colds. They may also be termed Pulmonary. Examples coltsfoot, marshmallow, wild cherry
Purgative The strongest classification of laxative herbs, these should only be used in extreme cases and under medical supervision. The cause extreme bowl evacuation and may be accompanied by uncomfortable side effects such as abdominal cramping. Examples bitter apple, mandrake, senna leaves
Refrigerant Think of a refrigerator, they cool and so do herbs that are classed as refrigerants. They relieve thirst and lower the temperature of the blood, thereby cooling the body. Chickweed is popular in parts of the southern United States where summer heat and humidity is stifling. Examples aconite, catnip, wormwood
Rubefacient As a memory key to the use of these herbs, focus on Rub. They are applied to the skin by massage which causes increased circulation and a reddening of the skin. Many are a mild irritant and may produce tingling of the epidermis as well. They are used to alleviate joint pain, arthritis, and headaches. Examples cayenne, stinging nettle
Sedative Sedative herbs calm, sooth and relax the nervous system and muscles and may induce sleep in larger doses. Correct dosages are essential as an excess some of these herbs may be fatal. Examples chamomile, jasmine, and valerian
Stimulants Stimulants stimulate. They impart a feeling of increased energy by raising the heart rate, rate of respiration and level of nerve awareness. Caffeine is considered a mild stimulant, but to those unaccustomed to it, its effects can produce light-headedness and nervous tension. Examples cayenne, cinnamon, horseradish
Stomachic These herbs are used for treating stomach ailments such as indigestion and what is commonly referred to as a nervous stomach. They may be added directly to food as seasoning to best enjoy their taste as well as their physiological effects. Examples dill and peppermint
Styptic Styptic herbs bind the blood, causing blood vessels to contract and clots to form which ceases the flow of blood. Examples avens, stinging nettle and sage
Sudorific These herbs are more intense in effect than diaphoretic herbs but are some times grouped together since both stimulate the sweat glands thereby reducing body temperature and eliminating toxins.
This classification refers to herbs that promote a state of good health and overall well being. They are gently in their effect as they cleanse and tone the body. Examples agrimony, catnip, dandelion, and yarrow
This information is provided for educational purposes only and is not intended as a substitue for proper medical care. Do not self administer these or any other plants without further, more advanced study.. Your health is the most important asset you have, please use good judgment.

