Adaptogen

Helps the body resist physical, chemical, and biological stress without disrupting normal physiological function. Adaptogens work non-specifically, meaning they support overall resilience rather than targeting a single system. Common in Ayurvedic and Traditional Chinese Medicine traditions. Examples include ashwagandha, eleuthero, and rhodiola.

Alterative

Gradually restores proper function in the body and increases health and vitality. Alteratives work slowly over time, supporting the elimination of metabolic waste and improving tissue nutrition. Traditionally used for skin conditions, lymphatic congestion, and chronic inflammatory states.

Analgesic

Assists in reducing pain, taken internally or applied externally. Analgesic herbs may act through anti-inflammatory pathways, nerve-dampening compounds, or direct receptor activity depending on the herb and preparation.

Anodyne

Relieves or soothes pain. Used interchangeably with analgesic in many herbal traditions. The term anodyne is older and often appears in Western eclectic and folk herbal literature.

Antacid

Assists in neutralizing excess acid in the stomach and small intestine, helping to relieve heartburn and indigestion.

Anthelmintic

Expels parasitic worms from the digestive system. Also called vermifuge. Traditionally used with herbs such as wormwood, black walnut, and cloves.

Anti-anxiety

Reduces anxiety and nervous tension. Herbs with anti-anxiety properties typically calm the nervous system through sedative or nervine mechanisms, often without the full sedation of hypnotic herbs. See also: nervine, sedative.

Antiasthmatic

Helps relieve symptoms of asthma, including bronchospasm and airway inflammation. May work through antispasmodic, expectorant, or bronchodilating actions depending on the herb.

Antibacterial

Inhibits the growth of or helps destroy bacteria. See also: antimicrobial, antibiotic, antiseptic.

Antibiotic

Inhibits the growth of or destroys bacteria, viruses, or amoebas. In herbal medicine this term is used broadly to describe herbs with demonstrated antimicrobial activity against pathogens.

Antidepressant

Traditionally used to support mood and reduce symptoms associated with low mood or depression. In herbal practice this includes herbs that act on neurotransmitter systems, reduce inflammation, or support adrenal and nervous system function. St. John's Wort is a well-studied example.

Antidiabetic

Traditionally used to support healthy blood sugar levels. Herbs in this category may improve insulin sensitivity, slow carbohydrate absorption, or support pancreatic function. Always consult a healthcare provider if managing diabetes with herbs.

Antifungal

Inhibits the growth of fungi, including candida and dermatophytes. Antifungal herbs are used both internally and topically. Examples include oregano, pau d'arco, and garlic.

Anti-inflammatory

Assists the body in reducing inflammation. Herbal anti-inflammatories work through various pathways, including inhibiting COX enzymes, reducing pro-inflammatory cytokines, or acting as antioxidants. Turmeric and ginger are commonly studied examples.

Antimicrobial

Assists the body in destroying or inhibiting pathogenic micro-organisms, including bacteria, viruses, and fungi. A broader term than antibiotic or antibacterial.

Antioxidant

Neutralizes free radicals, reducing oxidative stress and associated cellular damage. Most herbs with significant polyphenol, flavonoid, or vitamin C content carry antioxidant activity.

Antipruritic

Reduces or relieves itching. Applied topically in preparations such as salves, poultices, or washes. Chickweed and plantain are common antipruritic herbs.

Antipyretic

Helps reduce or prevent fever. See also: febrifuge. These terms are used interchangeably in most herbal texts.

Antirheumatic

Traditionally used to relieve pain and inflammation associated with rheumatic conditions, including arthritis and joint stiffness. Actions may include anti-inflammatory, diuretic, and alterative effects.

Antiseptic

Applied externally to prevent the growth of bacteria on wounds or skin surfaces. Many aromatic herbs with volatile oil content, such as thyme and lavender, carry antiseptic properties.

Antispasmodic

Helps prevent or relax muscle spasms. Used for digestive cramping, menstrual cramps, respiratory spasms (as in coughs), and tension headaches. Acts on smooth and skeletal muscle depending on the herb.

Antitumor

Traditionally used or studied for activity against abnormal cell growth. This does not mean an herb treats or prevents cancer. Always work with a qualified healthcare provider for cancer-related care.

Antitussive

Suppresses or reduces coughing. Antitussive herbs may work by soothing irritated airways (demulcent action), relaxing bronchial spasms (antispasmodic), or reducing the cough reflex.

Aperient

A mild laxative that gently encourages bowel movements without the harsh action of a strong purgative. Often used as a long-term digestive regulator.

Aphrodisiac

Traditionally used to improve sexual potency, libido, or vitality. Actions vary by herb and tradition. Some work through hormonal pathways (maca, tribulus), others through nervine or circulatory support (damiana, ginseng).

Aromatic

Herbs with a strong, pleasant odor due to volatile oil content. Aromatics can stimulate the digestive system, improve appetite, and support the respiratory tract. Many also have antimicrobial and antispasmodic properties.

Aromatic Stimulant

An aromatic herb that additionally stimulates circulation, digestion, or metabolic activity. Ginger and turmeric are common examples in this category.

Astringent

A substance that has a constricting or binding effect on tissues. Astringents tighten and tone mucous membranes, reduce secretions, and stop minor bleeding. High tannin content typically produces this action. Used internally for diarrhea and externally for wound care.

Bitter Tonic

Herbs with a bitter taste that stimulate digestive secretions, including bile, gastric acids, and digestive enzymes. Bitter tonics improve appetite and overall digestive efficiency. Dandelion, gentian, and yellow dock are classic examples.

Blood Purifier

A traditional term for herbs that support the elimination of metabolic waste and improve blood quality. Largely overlaps with alterative. Used in folk medicine across many traditions for skin conditions, chronic infections, and toxic buildup.

Blood Tonic

In Traditional Chinese Medicine, herbs that nourish the blood and support its quality. Western equivalents include nutritive herbs high in iron, minerals, and vitamins. Dong quai and yellow dock are examples in their respective traditions.

Calmative

Produces a mild calming or sedating effect without strong sedation. Overlaps with nervine and relaxant. Suitable for daytime use to reduce tension without causing drowsiness.

Cardiac Tonic

Supports and strengthens heart function. Cardiac tonics may improve cardiac output, regulate heart rhythm, or support circulatory efficiency. Hawthorn is the most widely used cardiac tonic herb in Western herbalism.

Carminative

Helps relieve gas and cramping in the bowel. Carminatives relax the smooth muscle of the intestinal wall while expelling accumulated gas. Most aromatic herbs, including fennel, ginger, peppermint, and chamomile, act as carminatives.

Cholagogue

Promotes the flow of bile from the gallbladder into the small intestine, which also stimulates bowel movements. Cholagogues support fat digestion and liver function. Dandelion root, artichoke, and milk thistle are common examples.

Demulcent

A soothing, mucilaginous substance taken internally to coat and protect inflamed or irritated tissue. Used for sore throats, gastritis, ulcers, and urinary tract irritation. Slippery elm, marshmallow root, and licorice root are primary demulcent herbs.

Diaphoretic

Induces sweating. Used traditionally to break fevers, support elimination through the skin, and relieve cold and flu symptoms. Best taken as a hot tea. Elderflower, yarrow, and peppermint are classic diaphoretics.

Digestive

Supports or improves overall digestive function. This is a broad category that may include carminative, bitter tonic, cholagogue, or stomachic actions depending on the herb and preparation.

Diuretic

Increases the flow of urine, supporting elimination through the kidneys. Used for urinary tract infections, water retention, high blood pressure, and kidney health. Dandelion leaf, nettle, and corn silk are common diuretics.

Emmenagogue

Promotes or stimulates menstruation. Used traditionally to regulate irregular cycles or relieve amenorrhea. Emmenagogue herbs should be avoided during pregnancy as some can stimulate uterine contractions.

Emollient

Softens, soothes, and protects the skin or mucous membranes when applied topically. Emollient herbs contain oils, mucilage, or waxes. Calendula, chickweed, and plantain are common topical emollients.

Endocrine Agent

Influences hormone production, secretion, or receptor activity. In herbal medicine this includes herbs that support thyroid function, adrenal function, or sex hormone balance. Use with care alongside hormone-active medications.

Expectorant

Expels mucus from the lungs and throat by thinning secretions and stimulating their movement upward. Used for productive coughs, bronchitis, and congestion. Mullein, elecampane, and thyme are well-known expectorants.

Febrifuge

Helps reduce or prevent fever. Used interchangeably with antipyretic. Often overlaps with diaphoretic action in that both support the body's thermal regulation. Yarrow, elderflower, and boneset are traditional febrifuges.

Galactagogue

Increases milk production and secretion in nursing mothers. Also spelled galactogogue. Fenugreek, blessed thistle, and fennel seed are traditional galactagogues.

Heat-Clearing

A Traditional Chinese Medicine category for herbs that reduce internal heat patterns, including fever, inflammation, and hot, dry conditions. Cooling herbs such as chrysanthemum and coptis fall into this category.

Hemostatic

Assists in stopping hemorrhaging or excessive bleeding. Hemostatic herbs may constrict blood vessels, promote clotting, or tone and tighten tissue. Used internally for heavy menstruation or externally for wounds. Yarrow and shepherd's purse are classic hemostatics.

Hepatic

Assists the liver and helps increase the flow of bile. Hepatic herbs support liver detoxification, improve bile production, and protect liver cells from damage. See also: hepatic tonic, cholagogue.

Hepatic Tonic

Strengthens and restores the liver over time, beyond acute support. Milk thistle, schisandra, and dandelion root are commonly used as hepatic tonics.

Hypnotic

Helps to induce sleep. Not related to hypnotic trance. Hypnotic herbs are stronger than sedatives in their sleep-inducing action. Valerian, hops, and California poppy are common hypnotics.

Hypotensive

Lowers blood pressure. Hypotensive herbs may work through vasodilation, diuresis, nervine relaxation, or direct cardiac effects. Hawthorn, garlic, and linden are well-regarded hypotensive herbs. Monitor blood pressure carefully if using alongside antihypertensive medications.

Immunomodulating

Modulates immune system activity, either stimulating a low-functioning immune response or calming an overactive one. Distinct from simple immune-stimulating herbs. Reishi, astragalus, and eleuthero are commonly cited immunomodulators.

Laxative

Promotes bowel movements. Herbal laxatives range from gentle bulk-forming types (psyllium, slippery elm) to stimulating anthraquinone-based herbs (senna, cascara) that should be used short-term only.

Mucilage

Herbs that contain a gelatinous, slippery substance that soothes and coats tissues. Mucilaginous herbs are used internally for inflammatory conditions of the digestive and respiratory tracts. See also: demulcent. Marshmallow root and slippery elm are primary examples.

Nervine

Helps calm nervous tension and nourishes the nervous system. Nervines range from mildly calming (chamomile, lemon balm) to more deeply relaxing (skullcap, passionflower). Used for stress, anxiety, and nervous exhaustion.

Neuroprotective

Protects nerve cells from damage and supports long-term brain health. Neuroprotective herbs may reduce oxidative stress in the brain, support neurotransmitter function, or promote nerve growth. Ginkgo biloba and lion's mane mushroom are studied examples.

Nutrient

Provides vitamins, minerals, or other nutritional compounds the body requires. See also: nutritive.

Nutritive

High in vitamins, minerals, and nutrients that directly nourish the body. Nutritive herbs are generally food-grade and safe for regular, long-term use. Nettles, oatstraw, dandelion, and moringa are classic nutritive herbs.

Oxytocic

Helps stimulate uterine contractions to assist with inducing or augmenting labor. Use only under direct supervision of a qualified healthcare provider. Avoid during pregnancy unless specifically directed.

Parturient

Prepares the uterus for labor and childbirth or facilitates the birthing process. Raspberry leaf is the most commonly referenced parturient herb in Western herbalism, traditionally taken in the third trimester under midwife guidance.

Pectoral

A respiratory tonic that assists in strengthening and healing the respiratory system. Pectoral herbs are used for chronic respiratory weakness, coughs, and lung recovery.

Relaxant

Reduces tension in muscles or the nervous system. Relaxants may target smooth muscle (antispasmodic), skeletal muscle, or the central nervous system depending on the herb. Kava, valerian, and cramp bark carry relaxant actions.

Roborant

Strengthens and restores the body after illness or debility. An older term largely replaced by "tonic" in modern herbal texts. Found in 19th-century eclectic and physio-medical literature.

Rubefacient

Promotes blood flow to the surface of the skin when applied topically, causing local redness and warmth. Used for muscular pain, arthritis, and cold extremities. Cayenne and mustard are common rubefacients.

Sedative

Helps quiet the nervous system and reduce nervous excitement. Stronger in action than a nervine or calmative, but generally less forceful than a hypnotic. Used for anxiety, insomnia, and nervous agitation.

Stimulant

Increases circulation and energy of the body. Stimulant herbs raise metabolic activity, improve blood flow, and can increase alertness and warmth. Cayenne, ginger, and rosemary are circulatory stimulants.

Stomachic

Helps nourish and promote normal functioning of the stomach. Stomachic herbs improve appetite, ease nausea, and support gastric secretions. Chamomile, fennel, and ginger are commonly used stomachics.

Tonic

Promotes the normal function of the systems of the body over time. Tonics are taken regularly for sustained benefit rather than acute treatment. They improve the overall strength and function of an organ or system, and are generally safe for long-term use.

Vasoactive

Affects the diameter of blood vessels, either dilating (vasodilator) or constricting (vasoconstrictor) them. Vasoactive herbs influence blood pressure and circulation. Hawthorn and ginkgo are examples with vasodilating effects.

Vulnerary

Encourages cell growth and repair to heal wounds. Vulnerary herbs are used topically for cuts, abrasions, burns, and skin damage, and sometimes internally for healing ulcers or damaged mucous membranes. Calendula, comfrey, and plantain are classic vulneraries.