From plant to use
Simmering roots, bark and seeds so they release their flavour and compounds.
Hard plant parts give up little in a short infusion. That is why many traditions gently boil roots, bark, seeds and berries: a decoction. Think of ginger root, cinnamon bark and the herbal formulas of Ayurveda and traditional Chinese medicine.
Registry
Herbs on this site whose description mentions this preparation. That does not mean every herb is safe to prepare yourself: read the safety information for each one.
CautionOceania · Food · № 173
Acacia spp. (o.a. A. holosericea, A. decurrens)
Roasted wattleseed is a protein- and fibre-rich bushfood. The bark of some species is rich in tannins and was used for wounds and diarrhoea. There is little clinical research.
CautionAsia · Herb · № 682
Isatis tinctoria (syn. I. indigotica)
Traditionally attributed effects: root (ban lan gen) and leaf (da qing ye) cool heat and 'toxin' in viral infections, sore throat and mumps.
CautionEurope · Herb · № 86
Plantago major
The leaf is traditionally bruised and applied to insect bites, small wounds and grazes, and taken as tea for coughs. Clinical evidence is limited.
CautionCentral America and the Caribbean · Herb · № 397
Acacia farnesiana
Traditionally attributed effects: astringent, soothing, cleansing; for bleeding gums, gonorrhoea; gum as a substitute for gum arabic.
CautionAsia · Herb · № 640
Polygonatum odoratum
Traditionally attributed effects: nourishes the stomach and promotes the production of body fluids; for fatigue, poor appetite, weak digestion and exhaustion.
CautionNorth America · Herb · № 190
Thuja occidentalis
Traditionally attributed effects: expels worms, astringent, antimicrobial, anti-inflammatory, stimulates muscles, antiseptic.
CautionAfrica · Herb · № 373
Boswellia sacra
The resin is mainly used as incense and fragrance. Extracts of related Boswellia species have been studied for osteoarthritis, with modest and variable results.
CautionAfrica · Herb · № 921
Leonotis leonurus
A shrub of the mint family, two to three metres tall, with orange, tubular flowers in whorls around the square stems. Contains marrubiin and leonurine, as well as labdane compounds. Considered mildly calming; which substance causes the effect is not yet clear.
CautionAsia · Herb · № 767
Ziziphus jujuba var. spinosa
Traditionally attributed effects: nourishes heart yin and calms the mind in insomnia and restlessness; curbs night sweats.
CautionNorth America · Herb · № 156
Prunus serotina
The dried bark was long used in cough syrups to calm irritating coughs. Modern clinical evidence is lacking.
CautionNorth America · Herb · № 159
Dioscorea villosa
Traditionally used for abdominal and uterine cramps. Wild yam cream is sold as 'natural progesterone', but the body cannot convert diosgenin into hormones; only a laboratory can.
CautionAsia · Herb · № 651
Atractylodes macrocephala
Traditionally attributed effects: strengthens the spleen and regulates the stomach; for diarrhoea and fluid retention, and traditionally to help prevent miscarriage.
CautionNorth America · Herb · № 598
Quercus alba
Traditionally attributed effects: strongly astringent; strengthens lax tissue (diarrhoea, inflamed gums, chronic nasal congestion, weak bladder), stops bleeding (nosebleeds, internal bleeding).
CautionAsia · Herb · № 128
Morus alba en M. nigra
The leaf (sang ye) is being studied for post-meal blood sugar and is used in Chinese medicine for coughs and fevers; bark, twigs and berries each have their own use too. Evidence is preliminary.
CautionAsia · Mushroom · № 652
Tremella fuciformis
Traditionally attributed effects: a tonic for the yin energy and the lungs; supports breathing, energy and a balanced blood pressure.
CautionAfrica · Herb · № 429
Balanites aegyptiaca
Traditionally attributed effects: laxative, expels worms; seeds for cough and colic, oil on burns and freckles, seed extract lowers blood pressure.
CautionAsia · Herb · № 712
Dioscorea hypoglauca (syn. D. collettii)
Traditionally attributed effects: clears cloudy urine and expels wind and dampness in rheumatism and skin complaints.
CautionCentral America and the Caribbean · Herb · № 632
Anemopsis californica
Traditionally attributed effects: expels wind and dampness in joint pain that worsens in cold, wet weather, opens blocked sinuses and dries dampness in slow-healing wounds and swellings.
CautionAsia · Herb · № 478
Curcuma zedoaria
Traditionally attributed effects: stimulating, carminative, expectorant, soothing, diuretic, skin-irritant, purifies the blood.
CautionSouth America · Herb · № 324
Quillaja saponaria
Traditionally attributed effects: expectorant, cleansing, anti-inflammatory.
CautionNorth America · Herb · № 150
Actaea racemosa
Mainly sold for menopausal symptoms such as hot flushes. NCCIH reports that study results are mixed and there is not enough evidence that it helps.
CautionAsia · Herb · № 18
Glycyrrhiza glabra
A root with long use in several traditions; high-quality evidence does not support most health claims.
CautionAsia · Herb · № 706
Bassia scoparia (syn. Kochia scoparia)
Traditionally attributed effects: drains damp heat in cystitis and itchy, weeping skin.
CautionEurope · Herb · № 187
Quercus robur
The bark contains a lot of tannins and is astringent. It is used as a decoction for diarrhoea, as a mouthwash for inflamed gums and as a sitz bath for haemorrhoids.
CautionEurope · Herb · № 108
Berberis vulgaris
Bark and root contain berberine, which is being studied for blood sugar and cholesterol. The berries are rich in vitamin C. Evidence for barberry itself is limited.
CautionAsia · Herb · № 728
Atractylodes lancea
Traditionally attributed effects: dries dampness and strengthens the spleen; expels wind, cold and dampness.
CautionNorth America · Herb · № 933
Fraxinus nigra
An ash of wet ground. The wood has hardly any fibre between the growth rings, so after pounding it splits into thin strips. Medicinal effects have not been studied.
CautionAsia · Herb · № 411
Amomum subulatum
Traditionally attributed effects: stomachic, carminative, stimulates the heart, expectorant; for digestive complaints, liver congestion, tooth and gum complaints, kidney stones (with melon seed), inflamed eyelids; flavouring.
CautionAsia · Herb · № 363
Nigella sativa
Traditionally attributed effects: aromatic, diuretic and sudorific, promotes bile, stomachic, stimulating, carminative, expels worms, promotes menstruation and milk flow, antibacterial.
CautionAsia · Herb · № 475
Curculigo orchiodes
Traditionally attributed effects: bitter aromatic tonic, soothing, diuretic, aphrodisiac, cleansing; for haemorrhoids, diarrhoea, jaundice, asthma, itching and skin diseases, urinary stones, bronchitis, lumbago, recovery after illness.
CautionEurope · Herb · № 554
Solanum nigrum
Traditionally attributed effects: cleansing, calming, induces sweating and urination, expectorant; for oedema, chronically enlarged liver, jaundice, chronic skin diseases, coughing up blood, haemorrhoids, kidney and bladder inflammation, gonorrhoea, eye diseases; pain-relieving wash.
CautionAsia · Herb · № 135
Piper nigrum
Important warming spices in Ayurveda, used for sluggish digestion and colds. Piperine from pepper increases the absorption of some substances, such as curcumin.
CautionNorth America · Herb · № 575
Viburnum prunifolium
Traditionally attributed effect: antispasmodic and relaxing, especially for menstrual and uterine cramps. Clinical research is lacking; that it can prevent miscarriage has not been shown.
CautionAsia · Mineral · № 782
Sulfur
Traditionally attributed effects: externally for scabies and fungal infections.