Friday, 16 November 2018

Synergy of Baical Skullcap and Antibiotics for MRSA

Article and photo by Ann Walker
The term methicillin-resistant Staphylococcus aureus (MRSA) refers to a group of bacteria that are genetically distinct from other strains of S. aureus – a common bacteria found normally on human skin or nasal passages. The MRSA strains are resistant to most common antibiotics and are often associated with hospital infections which are very difficult-to-treat.

The root of Scutellaria baicalensis, also called Chinese skullcap or Baical skullcap, has long been used in traditional Chinese herbal medicine. The herb is often found in herbal formulas designed to alleviate inflammatory symptoms including allergies, auto-immune disorders and bacterial infections. Impressed with its wide applications, many western herbal practitioners, like myself, have included it in their own materia medica. It is the flavonoids, baicalin, wogonin and baicalein, in Baical skullcap which are of most interest: these compounds have clear anti-inflammatory and anti-allergic activity in laboratory studies. But what has caused some excitement among researchers over recent years is the finding, first hinted at 18 years ago, that these flavonoids can act in synergy with antibiotics to enhance their activity against MRSA (PMID: 10757427), by reversing the mechanisms leading to resistance.

Baical skullcap and its flavonoids have good bactericidal properties in their own right, including, notably, against H. pylori, the bacteria which cause stomach ulcers and upper digestive discomfort (PMID: 18826148). But, more recently, the ‘synergy’ story of the herb, taken along with antibiotics has been followed up. There is now evidence that baicalein can reverse both penicillin resistance (PMID: 26028441) and ciprofloxacin resistance (PMID: 21782012) of MRSA in test-tube studies. News that an ancient remedy may be profitably used as an adjunct to modern antibiotics to enhance their effect or even reverse resistance is encouraging for future healthcare.

PMID = PubMed identifier

Ann Walker PhD FCPP MNIMH RNutr
Course Director DHM
Herbal Practitioner

Tuesday, 6 November 2018

Therapeutic Potential of Ivy Leaf (Hedera helix)

Article & Photo by Ann Walker
I took this photo a few days ago near the River Thames at Wallingford on a lovely autumn day. Ivy (Hedera helix) is one of the few plants in bloom at this time of the year and some species of bees are totally dependent on it for their winter supplies of honey. Ivy is a tough plant in the same family as ginseng (Panax ginseng), so herbal connections should not be unexpected.

However, I was surprised to find earlier this year that at least two herbal supplement products containing ivy have been granted THR (Traditional Herbal Registration) status by the MHRA (Medicines & Healthcare products Regulatory Agency, UK), yet ivy is not a herb much used by herbal practitioners in Britain. (A list of herbal products granted a THR can be found on the MHRA website by entering “List of products granted a Traditional Herbal Registration” in the search box.)

As the criteria for obtaining a THR is very strict and these ivy products are now available freely for sale to the public, I thought it would be worthwhile to include a monograph on ivy for our updated version of the Discovering Herbal Medicine course.

Ivy leaf has a long-documented history of use, particularly in continental Europe, for its ability to loosen sticky phlegm in the airways. The herb contains an impressive number of active compounds and, in particular, saponins – a group of compounds related to those found in ginseng. These ivy compounds show physiological and anti-microbial actions in test-tube and animal studies, which support the ivy’s traditional use for respiratory-tract infections. Although clinical trial data is scarce, three randomized clinical studies carried out in Germany show positive effects on respiratory health of the consumption of ivy extracts for adults and children (PMID: 22532491; 24916707; 29441845).

Ivy leaf preparations are safe taken in recommended (small) doses combined with other herbs and as such are well tolerated. Syrups, drops, tablets, suppositories and liquids containing ivy leaf extracts often combined with thyme (Thymus vulgaris) (see PMID: 17063641) are now available throughout the EU for symptoms of coughing, especially following bacterial infections. Potentially, the herb holds promise for treating conditions wider than just the respiratory tract, but more research is needed. Ivy leaf is clearly a herb with therapeutic potential and herbal practitioners in the UK might consider including it in their own materia medica.

PMID = PubMed identifier

Ann Walker PhD FCPP MNIMH RNutr
Course Director DHM
Herbal Practitioner

Wednesday, 24 October 2018

Spearmint for Memory?

Article by Ann Walker
Spearmint (Mentha spicata) is a parent species of peppermint or black mint (Mentha x piperita), which was discovered in England only a few centuries ago, as a hybrid cross between spearmint and watermint (M. aquatica). Spearmint is considered by herbal practitioners as being a milder version of peppermint, but - not surprisingly considering its origin - many of the traditional health benefits which have been attributed to peppermint are also ascribed to spearmint: including its use for symptoms of nausea, indigestion, gas, headache, etc. However, in the last few years spearmint itself has been the subject of at least three clinical studies.

This year, following on from promising results in the laboratory, a water-based extract of spearmint in tablet form was tested in a randomised, placebo-controlled, clinical trial (Kelli L. et al. J Alt & Comp Med 2018, 24, 37) of 90 otherwise healthy men and women aged 50-70 years. These subjects who consumed 900 mg per day of the spearmint extract for three months showed marked improvements in memory compared to those taking placebo.

The second study (PMID: 25058311) conducted recently was on spearmint tea, which was shown to reduce pain and stiffness in knee osteoarthritis compared with placebo. However, the numbers of people of this trial were regarded as too small to be certain of the effect. An earlier clinical study (PMID: 19585478) of spearmint tea showed reductions in testosterone levels compared with placebo in women with excess facial hair due to polycystic ovarian syndrome. Unfortunately, the short time of the study did not allow for any noticeable changes in hair growth. Nevertheless, these studies, although small, show potential new applications in healthcare for a tasty culinary herb which warrant more attention.

PMID = PubMed identifier

Ann Walker PhD FCPP MNIMH RNutr
Course Director DHM
Herbal Practitioner

Wednesday, 17 October 2018

The Many Uses of Lavender

Article by Ann Walker
I am currently writing a monograph on lavender as part of an up-date addition to the Discovering Herbal Medicine course. Delving into the literature for this monograph, even as a herbal practitioner, I have found it astonishing how numerous and diverse are the documented applications of lavender, which extend from actions on the nervous and digestive systems to skin problems and more.

Traditionally, lavender has been used (mainly as a tea) for various psychological conditions, including anxiety, stress and insomnia. Tradition also speaks of its use for somatic conditions, including digestive problems and migraines. Topically, lavender has been used for a variety of skin ailments, ear infections and painful muscles. In more recent times, research has cast new light on the herb’s healthcare potential, as well as supporting some of its traditional uses, including its antimicrobial and anxiolytic properties and its positive effects on mental function (including in Alzheimer’s disease), insomnia and the stress response. It also has a proven role in midwifery, which was not documented in earlier times. Indeed, there are several clinical trials showing benefit of external application of lavender oil to post-natal vaginal and perineal wounds for pain reduction, speeding healing and lowering the risk of infection.

Lavender has a unique mix of calming, balancing and uplifting properties on the human body and is, therefore, well indicated for alleviation of all types of stress and emotional situations. Lavender oil is gentler on the skin than most other essential oils and can be safely applied direct (without dilution) to the skin in small quantities. Less commonly, but increasingly, the oil is used as an oral remedy and capsules of high-quality lavender oil are now available over-the-counter in the UK and EU for relief of symptoms of mild anxiety such as stress and nervousness (see advice from the British Herbal Medicine Association). Despite undoubted medicinal uses, lavender oil is still mainly used for its fine aroma, which, although having therapeutic properties, is also a delightful addition to the bath-water! It is not often that herbs with strong medicinal properties smell good too!

Ann Walker PhD FCPP MNIMH RNutr
Course Director DHM
Herbal Practitioner

Friday, 21 September 2018

5 Facts About: Cramp Bark

Article & Photo: Debs Cook
Cramp Bark (Viburnum opulus) is a deciduous shrub which is native to Europe and North America; it grows to a height of 2–5 metres. The leaves grow 5-10cm in length; and are a mid-green in colour, opposite, 3-lobed and smooth on the upper surface. The inflorescences are hermaphrodite, creamy-white in colour and form ‘balls’ of individual 5-petaled flowers - hence one of cramp bark’s folk names the Snowball tree - the flower balls can be 4–11cm diameter and occur at the top of the stems. The berries form bright red drupes approximately 7–10mm in diameter each berry contains a single seed.

Other names that Cramp bark is known as include: - Guelder Rose, King's Crown, High Cranberry, Red Elder, Rose Elder, May Rose, Marsh Gueldres-Rose, Whitsun Rose, Whitsun Bosses, Gaitre Berries, Kalyna, Water Elder, European Cranberry Bush, Snowball Tree, Whitten Tree, Squaw Bush, Pimbina, Schneeball Rinde and Obier. In the Victorian language of flowers, cramp bark is referred to by its common name of guelder rose and is used to symbolise winter. In the Ukraine, cramp bark is known by the name Kalyna and is a national symbol of the country. According to a legend Kalyna was associated with the birth of the Universe, the so-called Fire Trinity: the Sun, the Moon, and the Star.

Geoffrey Chaucer in the 14th century wrote about cramp bark under its then common name of the Gaitre-berry tree, saying that the berries were edible, which is true but they are rather bitter, they were more palatable cooked and used to make preserves, other sources state that the herb was known as the ‘Goitre’ tree. John Gerard in the 16th century referred to the herb as Rose Elder and wrote how it was ‘used as a sedative in the treatment of cramp, particularly uterine dysfunctions’, whilst John Parkinson called it the ‘Gelder Rose’ and made the observation that the 16th century naturalist Conrad Gessner referred to the plant by the Latin name Sambucus palustris vel aquatic and believed that some ancient European herbal texts referred to the herb by the name ‘Chamaeplatanus’, yet despite describing at great lengths the different names for the Guelder rose, Parkinson gave no uses for it.

Early 20th century German Naturopath Otto Mausert in his book ‘Herbs for Health’ first published in 1932 wrote “as its name indicates, this bark is very effective in relieving cramps and spasms of all kinds. As it exerts a decided influence upon the generative organs, it is especially useful in menstrual cramps and pains, giving tone and energy to the uterus.” R. C. Wren a herbalist who inherited Potter’s Herbals in the 1930’s included Cramp Bark in “Potter’s Cyclopaedia of Botanical Drugs & Preparations” citing it as being “effectual in cases of cramp, convulsions and spasms of all kinds.” Wren wrote that cramp bark was primarily used in tincture form, but said it may be given as a decoction when made up at the rate of ½ ounce of cramp bark to 1 pint of water.

1) Cramp bark has antispasmodic, astringent, hypotensive, nervine, sedative and tonic properties, it helps with muscle pains and cramps, hence the name. Native American Indian tribes such as the Meskwaki and Penobscot tribes used cramp bark as a means of alleviating muscle cramps, spasms and pains, they taught the use of the herb to the European settlers.

By the 19th century cramp bark were being used by the America Eclectic doctors to treat cases of mumps and swollen glands, and conditions such as goitre [an abnormal swelling of the thyroid gland that causes a lump to form in the neck] which is possibly the reason for calling cramp bark by the alternate name goitre tree? The bark was also used by the American eclectic herbalists to treat cases of biliary colic [linked to gall stones] and renal colic [linked to kidney stones].

2) A 100g dry weight of cramp bark contains 354 calories and 34g of dietary fibre, plus the following vitamins and minerals: -

• Calcium – 70.2mg
• Chromium – 2,354mg
• Cobalt – 2.1mg
• Iron – 11.5mg
• Magnesium - 88mg
• Manganese – 311mg
• Phosphorus – 4.9mg
• Potassium – 65mg
• Selenium – 8.6mg
• Silicon – 2.3mg
• Sodium – 9.9mg
• Zinc – 1.8mg

3) Cramp bark contains: - Bitter glycosides including viburnine and verbenalin, the later has a soporific (sleep inducing) property. Flavonoids are also present these include astragalin, catechin, quercetin and paeoniside, quercetin has both antioxidant and anti-inflammatory actions. There are a number of hydroquinones found in cramp bark, chiefly arbutin and methylarbutin, the former appeared in a study on the analogues in dermatology of hydroquinone published by the German Institute of Food Research in Potsdam in 2006 concluded that intestinal bacteria can transform arbutin into hydroquinone under certain conditions.

Polyphenolic acids including baldrianic, capric, chlorogenic, cinnamic, and valerianic are present, studies are currently being carried out on the potential antihypertensive effect that may be exhibited by chlorogenic acid. Valerianic acid is one of the constituents that give cramp bark its antispasmodic and relaxant properties.

Coumarins including aesculetin and scopoletin can be found in cramp bark, aesculetin is a natural lactone that can have an anticoagulant effect, and thus taking cramp bark should be avoided by people taking anticoagulant drugs like warfarin. Cramp bark also contains tannins these tannins give cramp bark its astringent action which enable the bark to help in cases of heavy menstrual bleeding.

4) An old remedy for cramping during a woman’s menses popular in the late 19th and early 20th centuries was a tea known as ‘Wildwood Tea’ which was an infusion of Cramp Bark, Senna Leaves, Eastern Skullcap (Scutellaria baicalensis), German Cheese Plant aka cleavers (Galium aparine), Colic Root aka Button Snake Root (Liatris spicata), Horsetail Grass aka Horsetail and Chicory Root, the tea was prescribed for its antispasmodic properties. Other 20th century medical botanists such as Harold Ward prescribed cramp bark for use as a nervine as well as an antispasmodic, to ease cramps he prescribed a decoction of cramp bark at the rate of “1 ounce to 1 pint of watered (simmered from 1½ pints)” the resulting decoction was to be administered in “1-2 tablespoon doses”.

Another old remedy that used cramp bark as its primary ingredient to ease cramping involved soaking the root of Cramp Bark with Skullcap and Skunk Cabbage to which a little bruised ginger and cloves were added, all the ingredients were macerated in a base of sherry or madeira wine, a small wineglass full was drunk 3 times a day to bring relief from the cramps.

5) The berries of cramp bark are high in Vitamins C and K and contain anthocyanins which gives them an antimicrobial property, these anthocyanins are water-soluble vacuolar pigments, the particular pigments in cramp bark berries can be used to make a red dye, and in fact early Native American Indians used them to make red ink. Hilda Leyel in her book Compassionate Herbs writes that “the berries were often used as a substitute for cranberries in Canada.” They were also often used to make a poultice to ease minor throat irritations.

Disclaimer: Whilst every effort has been made to source the most up to date and accurate information, we cannot guarantee that remedies in our articles are effective, when in doubt, consult your GP or a qualified Medicinal Herbalist. Remember also that herbal remedies can be dangerous under certain circumstances therefore you should always seek medical advice before self-treating with a homemade remedy, especially if you are pregnant, breast feeding or suffer from any known illness which could be adversely affected by self-treatment.

Friday, 14 September 2018

A Herbal Glossary of Terms

Written by Debs Cook
For a beginner on the journey to seek herbal knowledge, picking up a book on the subject of herbal medicine or browsing websites with herbal information can sometimes be rather confusing if they don’t know their Abortifacient from their Vulnerary. Often in these mediums herbs have their ‘Medicinal Properties’ listed using their medicinal term in information and recipe notes, and if the reader is not familiar with all these formal and scientific terms it can be rather confusing.

Our guide briefly explains over 100 terms, giving their technical name in laymen’s terms and offers a few examples of herbs that contain the property described, to help you better understand what is meant when an herbs herbal property is given. It should be noted that a single herb can have more than one property for example Peppermint (Mentha piperata) has antibacterial, carminative, cholagogue and stomachic properties amongst others. This is where studying herbal medicine reaps its rewards the more you study, the more you understand each herb and what it can be used for.

N.B. This guide is purely for educational purposes and should not be used to self-treat or be used in place of consulting your GP or a qualified herbalist.

Term
Action
Herb Examples
Abortifacient
The word abortifacient is a Latin word which means ‘to cause a miscarriage’ and describes and herb or a substance that induces an abortion.
Blue Cohosh, Pennyroyal, Rue.
Adaptogen
Adaptogen herbs help to support the adrenal glands, and the endocrine system.
Astragalus, Siberian Ginseng, Golden Seal.
Adjuvant
An adjuvant herb helps to modify and aid the action of another medicinal agent.
Astragalus, Panax Ginseng,  Plantain Seed.
Alterative
An alterative herb can help to alter the body’s state of health to be normal.
Burdock Root, Red Clover,  Sarsaparilla.
Analeptic
An analeptic herb that can stimulate and restore the central nervous system to health.
Camphor, Shepherd’s Purse,  Yerba Mate.
Analgesic
An analgesic herb helps to relieve pain, acting on the nervous system.
Angelica, Cramp Bark, White Willow.
Anaphrodisiac
An anaphrodisiac works in the opposite way to an aphrodisiac herb, reducing the desire and decreasing libido.
Hops, Liquorice, Marjoram.
Anaesthetic
An anaesthetic herb gives a loss of sensation or consciousness due to the suppression of nerve function.
Clove, Spilanthes (aka Toothache Plant), Valerian.
Anodyne
An anodyne herb helps to reduce or relieve mild pain.
Clove, Da Zao (Chinese Date), Opium Poppy.
Anthelmintic
An anthelmintic herb helps to destroy and expel parasitic worms from the body.
Butternut Bark, Tansy, Wormwood.
Antianemic
An antianemic herb helps to prevent or curing anaemia.
Bergamot, Dong Quai (Chinese Angelica), Shu Di Huang (Rehmannia Root).
Antibacterial
An antibacterial herb helps to destroy or stop the growth of bacteria
Bayberry, Oregon Grape Root, Tea Tree.
Anti-bilious
An anti-bilious herb helps the body to remove access bile from the digestive system, easing stress to the stomach.
Bayberry, Dandelion, Vervain.
Anti-catarrhal
An anti-catarrhal herb helps reduces inflamed mucous membranes and remove excess phlegm.
[Also referred to as a decongestant.]
Hyssop, Sage,  Yarrow.
Antidepressant
An antidepressant herb helps to prevent or alleviate mental depression.
Goat Weed, St John’s Wort, Valerian.
Anti-diabetic
An anti-diabetic herb helps to prevent or relieve diabetes mellitus.
Artichoke, Bilberry, Chicory.
Anti-diarrheic
An ant-diarrheic herb helps to prevent or treat diarrhoea.
Blackberry, Dead Nettle, Tormentil Root.
Antiemetic
An antiemetic herb helps to prevent or alleviate vomiting.
Fennel, Lemon Balm, Spearmint.
Antifungal
An antifungal herb helps to destroy or inhibit the growth of fungus.
Burdock Root, Calendula (Marigold), Neem.
Anti-haemorrhagic
An anti-haemorrhagic herb helps to control haemorrhaging, which in effect stops a wound from bleeding.
Agrimony, Self-Heal, Witch Hazel.
Anti-inflammatory
An anti-inflammatory herb helps to control inflammation caused by an injury or infection.
Arnica, Chamomile, Yarrow
Antilithic
An antilithic herb helps to prevent the formation of stones or gravel in the urinary system.
Buchu Bark, Corn Silk, Stone Root.
Antimalarial
An antimalarial herb helps to prevent or relieve malaria.
Cinnamon, Eucalyptus, Quassia. 
Antimicrobial
An antimicrobial herb helps to destroy microbes that cause disease.
Barberry, Clove,  Garlic.
Antioxidant
An antioxidant herb helps to remove potentially damaging agents which cause oxidation in the body.
Bilberry, Green Tea, Turmeric.
Antiperiodic
An antiperiodic herb helps to prevent the regular recurrence of the symptoms of a disease, for example malaria.
Barberry, Boneset, Vervain.
Antipruritic
An antipruritic herb helps to prevent or relieve itching.
Chickweed, Oats, Peppermint.
Antipyretic
An antipyretic herb helps to prevent or reduce fever.
Boneset, Feverfew, Meadowsweet.
Anti-rheumatic
An ant-rheumatic herb helps to ease the pain of rheumatism, inflammation of joints and muscles.
Chamomile, Prickly Ash Bark, Yarrow
Antiscorbutic
An antiscorbutic herb helps to cure or prevent scurvy.
Barberry, Shepherd’s Purse,  Watercress.
Antiseptic
An antiseptic herb helps to prevent infection by cleaning wounds and also inhibiting the growth of microorganisms in the body.
[Also referred to as a Germicide.]
Barberry, Calendula (Marigold), Echinacea.
Antispasmodic
An antispasmodic herb helps to calm the nervous and controls muscular spasms or convulsions in the body. [Also referred to as a Bronchospasmolytic.]
Cramp Bark, Pasque Flower, Skullcap.
Antitussive
An antitussive herb helps to control and alleviate a cough.
Hyssop, Peppermint, White Horehound.
Antiviral
An antiviral herb helps to inhibit the growth of viruses.
Garlic, Lemon Balm, Quassia.
Aperient
Aperient herbs have very mild laxative properties which help ease minor cases of constipation.
Barberry, Flax Seed, Senna.
Aperitive
An aperitive herb helps to stimulate the appetite.
Cleavers (Clivers), Dandelion, Winter Savory.
Aphrodisiac
An aphrodisiac herb helps to increase sexual arousal.
Ashwaganda, Damiana, Muira Pauma.
Aromatic
Aromatic herbs have strong and pleasant odours that help to stimulate the digestive system. 
Caraway, Fennel, Peppermint.
Astringent
An astringent herb helps to shrink tissue by triggering the binding of proteins.
Bayberry, Meadowsweet, Oak Bark.
Bitter
Bitter herbs help to stimulate the digestive system through a reflex via the taste buds.
Burdock, Dandelion, Milk Thistle.
Cardiotonic
Cardiotonic herbs affect the heart in varying ways depending on the specific herb, they can increases strength and tone of the heart amongst other actions.
[Also referred to as a Cardiac Tonic.]
Astragalus, Hawthorn, Motherwort.
Carminative
A carminative herb is rich in volatile oils which help to stimulate the digestive system and relax the stomach.
Aniseed, Dill, Peppermint.
Cathartic
Cathartic herbs have strong laxative properties that help produce bowel movements in severe cases of constipation.
Burdock Root, Rhubarb Root,  Senna Pods.
Cholagogue
Cholagogue herbs stimulate the release and secretion of bile from the gall bladder.
[Also referred to as a Choleretic.]
Dandelion, Milk Thistle, Vervain.
Counterirritant
Counterirritant herbs contain substances that cause one kind or irritation to relieve other kinds or irritation by producing an inflammatory response in  an adjacent area
Cayenne Pepper, Horseradish, Nettle
Demulcent
Demulcent herbs help to sooth irritated tissue and inflammation; they have a soothing action, especially on the mucous membranes.
Flax Seed, Marshmallow, Slippery Elm
Deobstruent
Deobstruent herbs help to remove obstructions and blockages in the ducts of the body such as the bile duct thus helping to regulate the passage of fluids such as bile.
Butcher’s Broom, Dandelion, Golden Seal.
Depurative
A depurative herb helps to removes toxins, waste products and impurities from the body, they also cleanse the blood.
Ashwaganda, Pau d’Arco, Valerian.
Diaphoretic
Diaphoretic herbs help the skin to eliminate toxins and aid perspiration.
[Also referred to as Sudorific]
Boneset, Ginger, Yarrow.
Digestive
Digestive herbs help to stimulate the digestion system aiding it to breakdown and absorb nutrients from food ingested.
Basil, Chamomile, Lemon Verbena.
Diuretic
Diuretic herbs help to increase the flow of elimination of urine from the body.
Boldo Leaf, Buchu Bark, Parsley Piert.
Emetic
Emetic herbs help to induce vomiting and are often used when poisoning is suspected.
Boneset, Cascara Sagrada, Wild Yam.
Emmenagogue
Emmenagogue herbs help to normalise the flow of menstruation and to stimulate the menses.
Black Cohosh, Chaste Tree,  Motherwort.
Emollient
Emollient herbs are used to soften and sooth the skin, externally they act in the way that demulcents act internally.
Chickweed, Marshmallow Root, Slippery Elm.
Estrogenic
Estrogenic herbs help to increase the production of oestrogen in the body.
Black Cohosh, Ginkgo, Red Clover.
Euphoriant
Euphoriant herbs create a sense of euphoria; the effect is temporary and often addictive.
Damiana, Nutmeg, Opium Poppy.
Expectorant
Expectorant herbs help to remove excess amounts of mucous from the respiratory system.
[Also referred to as Anticatarrhal.]
Elecampane, Liquorice Root, Thyme.
Febrifuge
An herb with febrifuge properties helps to reduce and relieve a fever.
[Also referred to as Antipyretic.]
Feverfew, Hyssop, Vervain.
Galactagogue
Galactagogue herbs help to promote the flow of milk and increase the activity in the mammary ducts.
[Also referred to as a Galactogenic.]
Fennel, Fenugreek,  Milk Thistle.
Hemagogue
Hemagogue herbs help to increase the flow of blood.
[Also referred to as an Emmenagogue.]
Angelica, Black Cohosh, Pennyroyal.
Hemostatic
Hemostatic herbs help to control the flow of blood or to stop bleeding.
Bistort Root, Cranesbill Root, Yarrow.
Hepatic
Hepatic herbs help to tone and strengthen the liver and aid the flow of bile.
Barberry, Dandelion, Wild Yam.
Hypnotic
Hypnotic herbs have a sedative and calming effect on the central nervous system and also help to induce sleep.
Chamomile, Hops, Passionflower.
Hypertensive
Hypotensive herbs affect the heart in varying ways depending on the specific herb; they can help to increase blood pressure amongst other actions.
[Also referred to as a Cardiac Tonic.]
Astragalus, Panax Ginseng, Hawthorn.
Hypoglycaemic
Hypoglycaemic herbs help to lower the level of glucose in the blood and regulate blood sugar.
Burdock Root, Cinnamon, Goats Rue.
Immune Enhancer
Immune enhancing herbs help to enhance the function of the immune system and are used when the immune system is underactive.
Astragalus, Echinacea, Wild Indigo.
Immunosuppressant
Immune suppressing herbs reduce the function of the immune system and are used when the immune system is overactive.
Cascara Sagrada, Indian Sarsaparilla, Long Pepper.
Irritant
Irritant herbs cause stimulation and irritation.
Black Pepper, Cayenne Pepper, Mustard Seed.
Lactifuge
Lactifuge herbs inhibit the production or secretion of breast milk.
Black Walnut, Peppermint,  Sage
Laxative
Laxative herbs help to produce bowel movements for cases of constipation.
Dandelion Root, Flax Seed, Rhubarb Root.
Lithotriptic
Lithotriptic herbs help to dissolves stones in the urinary tract.
Boldo Leaf, Butcher’s Broom,  Oregon Grape.
Mucilaginous
Mucilaginous herbs contain mucilage and help to lubricate tissue, soothing inflammation and ease dryness.
Psyllium Seed, Slippery Elm,  Violet Leaf.
Narcotic
Narcotic herbs work in a similar way to analgesic herbs to help reduce pain. In high doses they also induce drowsiness.
Devil’s Claw Root, Dong Quai (Chinese Angelica), Opium Poppy.
Nauseant
Nauseant herbs have the ability to induce vomiting.
Boneset, Broom & Calamus Root.
Nervine
Nervine herbs help to strengthen, stimulate and calm the nervous system.
Passionflower, Skullcap, St John’s Wort.
Nutritive
Nutritive herbs help to restore vitality and increase help and improve the function of the body.
Astragalus, Marshmallow Root, Slippery Elm.
Pectoral
Pectoral herbs help to strengthen and heal the respiratory system.
Coltsfoot, Lungwort, White Horehound.
Progesterogenic
Progesterogenic herbs help with the production of progesterone in the body and to boost its effects.
Chaste Tree (Agnus castus), Sarsaparilla, Wild Yam
Purgative
Purgative herbs help to produce bowel movements for cases of severe constipation.
Buckthorn Bark, Cascara Sagrada,  Rhubarb Root.
Refrigerant
Refrigerant herbs have a cooling effect when applied externally; they can soothe irritation and bring down internal and external body heat.
Chickweed, Sorrel, Spearmint.
Restorative
Restorative herbs help to alter the body’s state of health to be back to normal function.
Cleavers (Clivers), Nettle, Yellow Dock Root.
Resolvent
Resolvent herbs help reduce inflammation or swelling.
Lungwort, St John’s Wort, White Dead Nettle.
Rubefacient
Rubefacient herbs help to increase the circulation to the skin by dilating the skin's capillaries; the action reddens the skin, dilates the vessels, and increases blood supply locally.
Cayenne Pepper, Ginger, Rosemary.
Sialogogue
Sialagogue herbs help to stimulate the secretion of saliva from the salivary glands.
Bayberry, Centaury, Gentian Root.
Sedative
Sedative herbs have a soothing and tranquilising effect on the body.
Hops, Passionflower, Valerian
Soporific
Soporific herbs have a calming effect on the nervous system and are used to help induce sleep.
Chamomile, Lemon Balm Skullcap.
Stimulant
Stimulant herbs help to quicken and enliven the physiological functions of the body.
Cinnamon, Ginger, Panax Ginseng.
Stomachic
Stomachic is another term for carminative, these herbs are rich in volatile oils which help to stimulate the digestive system and relax the stomach.
Caraway, Chamomile, Peppermint
Sudorific
Sudorific herbs help the skin to eliminate toxins and aid perspiration.
[Also referred to as Diaphoretic.]
Bayberry, Catnip, Prickly Ash Bark.
Styptic
Styptic herbs help to shrink tissue by triggering the binding of proteins. They are usually high in tannin content which helps to reduce haemorrhage, Secretions and discharges.
Bilberry, Golden Rod, Oak Bark.
Toenifuge
Toenifuge herbs help to expel tape worms.
Garlic, Mulberry Leaf, Pomegranate Bark.
Tonic
Tonic herbs help to strengthen and revitalise specific organs, they can also work on the whole body and help to increase strength and tone.
Gentian Root, Panax Ginseng, Raspberry Leaf.
Vasodilator
Vasodilator herbs help to constrict or narrow blood vessels.
Garlic, Hawthorn, Thyme.
Vermifuge
Vermifuge is another term for an anthelmintic herb, these herbs help to destroy and expel parasitic worms from the intestine.
Black Walnut, Rue, Wormwood.
Vulnerary
Vulnerary herbs help the body heal wounds ad cuts, they are usually applied externally.
Arnica, Calendula (Marigold), Thyme.

Disclaimer: Whilst every effort has been made to source the most up to date and accurate information, we cannot guarantee that remedies in our articles are effective, when in doubt, consult your GP or a qualified Medicinal Herbalist. Remember also that herbal remedies can be dangerous under certain circumstances therefore you should always seek medical advice before self-treating with a homemade remedy, especially if you are pregnant, breast feeding or suffer from any known illness which could be adversely affected by self-treatment.