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Here is some detailed information I have found on the ingredients of absinthe.(from "Dick's Encyclopedia of Practical Receipts and Processes", 19th century, as transcribed by Dale Pendell in "Pharmako/Poeia")

30g Wormwood
Artemisia absinthium

The dried and powdered herb is used as a vermifuge. The oil is poisonous and should only be used externally. It should not be taken for more than a few weeks. In ancient Mexico, women enacted a ritual dance to honor of the Goddess of Salt, where they wore garlands of wormwood in their hair. It depresses the central medullary part of the brain, which is the area concerned with pain and anxiety. The tea is used to help alleviate the pain of childbirth. Used occasionally, it will soothe the nerves and balance the mind. Excessive long-term use of wormwood liqueur (absinthe) may be habit-forming and cause brain damage.
Family: asteraceae
Action: analgesic, anthelmintic, antifertility, antiseptic, antispasmodic, apertif, bitter, carminative, cholagogue, deobstruent, digestive, diuretic, emmenagogue, entheogen, febrifuge, narcotic, stimulant, stomachic, vermifuge
Used to Treat: anemia, anxiety, cancer (liver), childbirth, chlorosis, depression, depurative, fever, flatulence, gastric pain, gout, gravel, heartburn, indigestion, jaundice, leukemia, liver insufficiency, melancholy, migraine, nerves, neuralgia, orthopedic ailments, pain, poor appetite, rheumatism, sclerosis, skin irritation, tremors, wen, worms, wounds
Use: liqueur, poison

8.5 g Hyssop

History and Chemical Composition.?Hyssop inhabits Europe and this country, being raised principally in gardens. It flowers in July. The tops and leaves are the medicinal parts; their odor is pleasantly fragrant, and their taste hot, spicy and somewhat bitter, which properties are due to a volatile aromatic oil, which rises in distillation both with water and with alcohol.
Action, Medical Uses, and Dosage.?Stimulant, aromatic, carminative and tonic. Principally used in quinsy and other sore throats, as a gargle, combined with sage and alum, in infusion sweetened with honey. Also recommended in asthma, coughs, and other affections of the chest, as an expectorant.The leaves, applied to bruises, speedily relieve the pain, and disperse every spot or mark from the parts affected. The infusion (herb, iv to aqua Oj) may be given freely; the volatile oil, in doses of 1 or 2 drops.
ALSO SEE: Verbena hastata
Externally, blue vervain tea heals sores and wounds.
Family: verbenaceae
Action: anthelmintic, antiperiodic, diaphoretic, emetic, expectorant, febrifuge, hemostat, sedative, sudorific, tonic, tranquilizer, vermifuge
Used to Treat: albuminuria, common cold, congestion, ear ailments, fever, gastro-intestinal disturbances, insomnia, intestinal worms, nervous problems, sores, stomach ache, urinary ailments, viral infections, wounds
Use: medicine

1.8 g Calamus (Sweet Flag)
Acorus Calamis

Calamus Root is considered to have anti-arrhythmic, hypotensive, vasodilatory, anti-tussive, anti-bacterial and expectorant properties. Calamus has been used for lack of mental focus, stomach problems, acidity, and as an aid to quit tobacco smoking. Calamus has been shown to be of low toxicity in animals, and adverse reactions are rare. Though recent studies have revealed the presence of B-asarone, a carcinogen, the American variety is considered superior to the European because it seems to lack this ingredient. The Native Americans would chew the root while running long distances to increase endurance and stamina. Externally it is added to the bath to quiet the nerves and induce a state of tranquillity. Tincture of Calamus is useful as a parasiticide when directly, and frequently, applied to lice and scabies infestations. Calamus does have emmanagogic properties and should be avoided during pregnancy.
Calamus also called sweet-flag. The unpeeled dried rhizome of the perennial herb is used as a carminative, a tonic, and a stimulant. It can also be taken for coughs and used to scent potpourris. A bit may be chewed for dyspepsia and to suppress the urge for tobacco. It has a super-good delicious smell, but a somewhat bitter taste. It has been used medicinally since ancient Greek and Arabian times and is mentioned in the Old Testament, though in fact it was confused with citronella grass Roots are collected in late autumn or spring, washed, voided of root fibers and dried with moderate heat. Root may be chewed or broken up and boiled as a tea. Root deteriorates with age and is usually inactive after 1 year. Must be stored closed in cool dry place. A piece of dried root the thickness of a pencil and about 2 inches long provides stimulating and buoyant feelings. A piece 10 inches long is reported to act as a mind alterant and hallucinogen, but will more likely be violently emetic, especially when mixed with alcohol.
Family: acoraceae, araceae
Contains: asarone, beta asarone, b-asarone
Chemical Composition.?Trommsdorff found it to contain essential oil, resin, extractive with chloride of potassium, gum with phosphate of potassium, starchy matter, woody fiber, and water. The oil is lighter than water, and is pale yellow, very odorous and pungent. Kurbatow (1873) found this oil to contain a hydrocarbon (C10H16), which, with hydrochloric acid, formed a crystalline compound, and another hydrocarbon refusing to combine with this acid (Pharmacographia). Faust (1867) obtained a bitter glucosid, of a brownish color, and of a semi-fluid consistence, which he named acorin (C36H60O6). It contains no nitrogen when purified, is insoluble in water and benzol, but dissolves in alcohol, methylic alcohol, chloroform, and ether. Flückiger (Pharmacographia), by precipitating a decoction with tannin, and treating the precipitate with litharge, and exhausting the residue with chloroform, obtained a minute quantity of a very bitter, crystalline solid. Thoms (1886) thought to have obtained a crystalline alkaloid, calamine, which, however, in 1888 he declared to be trimethylamine. This result is supported by the observation of Kunz (1888) who found choline to exist in calamus root.
Action, Medical Uses, and Dosage.?The root is carminative, slightly tonic, and excitant, and forms a useful adjunct to other tonics and stimulants. It may be used in cases of flatulent colic, atonic dyspepsia, feebleness of the digestive organs, and to aid the action of cinchona or quinine in intermittents. It forms an excellent substitute, in syrup, for Godfrey's cordial. In flatulent colic of infants it is best combined with magnesia. Externally, it is a valuable application to indolent ulcers, and to keep up the discharges from blistered surfaces and issues. Dose of the infusion made by scalding 4 drachms of the root, coarsely bruised, in 8 fluid ounces of water, from 4 to 6 fluid ounces; of the powdered root, 20 to 40 grains; a tincture may be prepared from 1 part of the root and 5 parts of alcohol. Dose, from 5 to 30 minims The medicinal part of the plant is its fleshy underground stem, which stimulates appetite and digestion while combating spasms, relieving gas, and calming the nerves.

6.0 g Melissa
Melisse, Melissa officinalis

Used during pregnancy for headaches and dizziness. The warm infusion of the leaves has diaphoretic effects, and when added to bath water is also said to promote the onset of menstruation. Use the crushed leaves as a poultice for sores, tumors, milk-knots, and insect bites. Balm is also used in herb pillows because of its agreeable odor. When bruised, the whole plant smells like lemon. It is used to induce copious perspiration.
Although officially recognized only for its ability to calm the nerves, Lemon Balm has also been used as a remedy for bloating and gas, mood disorders, bronchial inflammation, high blood pressure, palpitations, vomiting, toothache, earache, and headache Only the plant's leaves are medicinal. Lemon Balm can be found in the form of dried herb, herb powder, and liquid or dry extracts, as well as various liquid and solid commercial preparations. To make a tea, pour a cup of hot water over 1.5 to 4.5 grams (about one-quarter to 1 teaspoonful) of crushed Lemon Balm, steep for 10 minutes, and strain.
Typical Dosage The usual daily dose of Lemon Balm is 8 to 10 grams (about 2 teaspoonfuls) Because the strength of commercial preparations may vary, follow the manufacturer's instructions whenever available.
Balm is a native of southern France, but is naturalized in various parts of Europe and the United States. It grows in fields, along roadsides, and is well-known as a garden plant, flowering from May to August. The whole plant is medicinal, and should be collected previous to its flowering. In the recent state, it has a lemon-like odor, which is nearly lost by drying. Boiling water extracts its virtues.
Chemical Composition.?Balm contains a bitter substance, some tannin., gum, and a peculiar volatile oil, which is yellowish, or reddish-yellow, very limpid, about 0.89 in density, and possessing the fragrance of the plant in a very high degree. A stearopten is present in it (Bizio); the oil is soluble in 5 parts of alcohol. The yield in oil does not exceed 0.1 per cent. The infusion of balm is incompatible with nitrate of silver, acetate of lead, and sulphate of iron.

30.0 g Anise Seed
Pimpinella Anisum

The fruit of Pimpinella Anisum, Linné"?(U.S.P.). (Anisum vulgare, Moench).
Nat. Ord.?Umbelliferae.
COMMON NAMES: Aniseed, Anise
Digestive, Calming, Relaxing.
Chemical Composition.?A volatile oil is contained in the external coat of the seeds, while a green-colored, fat oil of a butyraceous consistency, is obtained by expression of their inclosed substance. Brandes obtained from the fruit of anise, concrete fixed oil, green fat oil, resin, nitrogenous matter, sugar, gum, bimalate and binacetate of calcium, bimalate of potassium, volatile oil, lignin, silicate of iron, water, gum-resin, phosphate of calcium, extractive with various salts, etc.
The star-anise of cordial manufacturers possesses a taste and odor similar to the anise, but is procured from the Illicium Anisatum, Loureiro, a plant growing in Eastern Asia. A volatile oil is obtained by distillation from its fruit, which is often fraudulently substituted for the oil of anise; it is called oleum badiani or oil of star anise. Oil of common anise is sometimes adulterated with spermaceti or camphor, to promote its solidification; the former may be known by its insolubility in cold alcohol, the latter by its odor.
Oil of anise yields, upon oxidation, anisic acid (C8H8O3=C6H4[OCH3]COOH). This acid occurs in the form of colorless crystals, insoluble in water, but freely soluble in alcohol. It is an oxidation product of anethol (C10H12O) (the chief principle of the oils of anise [94 per cent, Flückiger], star anise and fennel), obtained by fractional distillation of the oil of anise, reserving and purifying that fraction distilling from 230° to 234° C. (446° to 453.2° F.).
Action, Medical Uses, and Dosage.?A stimulant and carminative; used in cases of flatulency, flatulent colic of infants, and to remove nausea. Sometimes added to other medicines to improve their flavor, correct griping and other disagreeable effects. The dose of aniseed, crushed or powdered, is from 20 to 40 grains. Infusion, for infants, in doses of a teaspoonful.
Derivatives.?ANISIC ACID is claimed to be antipyretic and antiseptic acting very much like salicylic acid, and has been employed with reputed success in articular rheumatism, and as a topical application to wounds. For internal use sodium anisate is preferred, the acid being but little used. Dose of the salt, 15 grains.

25.0 g Fennel Seed

"The fruit of Foeniculum capillaceum, Gilibert"?(U. S. P.) (Foeniculum vulgare, Gaertner; Foeniculum officinale, Allioni; Anethum Foeniculum, Linné, Meum Foeniculum, Sprengel).
Nat. Ord.?Umbelliferae.
COMMON NAMES AND SYNONYM: Common fennel, Fennel fruits, Fennel seeds, Sweet fennel, Roman fennel; Semen foeniculi.
Action, Medical Uses, and Dosage.?Carminative, stimulant, galactagogue, diuretic, and diaphoretic. Used in flatulent colic, and as a corrigent of unpleasant medicines. May be used in amenorrhoea and in suppressed lactation. Dose of powdered seeds, from 10 to 30 grains; infusion (grs. xl. to aqua Oss), 1 teaspoonful (infants) to wineglassful (adults).
Chemical Composition and Tests.?Oil of fennel contains from 50 to 60 per cent of anethol (see Oleum Anisi) which crystallizes out upon cooling, and dextro-fenchone (C10H16O, Wallach and Hartmann, 1890), an oily, camphoraceous ketone of bitter taste, solidifying above the temperature of melting ice, boiling at 192° to 193° C. (377.6° to 379.4° F.) and forming with hydroxylamine a crystallizable oxime (C10H16:N.OH), characterized by its melting point, 164° to 165° C. (327.2° to 329° F.). Furthermore, dextro-pinene and dipentene are present. Tardy (1897) found in a specimen of French fennel oil, in addition, methyl-chavicol (see Oleum Anisi), and perhaps anise-ketone (C6H4.OCH3.CH2COCH3). The relative amounts of these constituents vary according to the geographical sources of the oil; thus, fenchone is entirely absent in sweet or Roman fennel from southern France and Macedonia, while Sicilian fennel (Foeniculum piperitum, De Candolle) contains but traces of anethol. Oil of bitter fennel, growing wild in France, Spain, and Algeria, contains principally dextro-phellandrene, and traces of fenchone and anethol. According to Gildemeister and Hoffmann (Die Aetherischen Oele, p. 740), oil of fennel from which part of its anethol is removed by refrigeration, does not solidify at or above 3° C. (37.4° F.). An addition of alcohol or oil of turpentine reduces the specific gravity of the oil. The specific gravities, according to Schimmel and Co. (Report, April, 1897), range from 0.920 (Spanish fruit) to 0.987 (Asia Minor or Aleppo fruit). The U. S. P. gives the following tests for the purity of oil of fennel: "The oil is not colored by the addition of a drop of ferric chloride T.S. (absence of some foreign oils containing phenols, and of carbolic acid). If the oil be dropped into water, without agitation, it should not produce a milky turbidity (absence of alcohol)"?(U. S. P.).

10.0 g Star Anise

The fruit of Illicium verum, Hooker.
Nat. Ord.?Magnoliaceae.
COMMON NAMES AND SYNONYMS: Star-anise, Star-anise fruit, Chinese anise; Semen badiana, Anisi stellata fructus.
Star-anise should not be confounded with the very similar but poisonous fruit of Illicium anisatum, Linné
The volatile oil (oil of star-anise), amounts to about 4 to 5 per cent, and is almost identical with oil of anise (from Pimpinella Anisum, Linné). Star-anise oil (from Chinese fruit) according to Schimmel and Co.'s Semi-annual Report (October, 1893), has the specific gravity at 15° C. (59° F.), of 0.980 to 0.990, and its known constituents are anethol, phellandrene, safrol, and hydro-quinone-ethyl-ether, while only anethol (C6H4[OCH3][CH:CHCH3]) and pinene ([C10H16]) (Flückiger, Pharmacognosie, 1891) are given as the constituents of anise oil, which has the same density as star-anise oil.
Both the seeds and oil of star-anise possess the stimulant, diuretic, carminative, and slightly anodyne properties of anise. Locally applied and internally administered, they have been used for abdominal pains, particularly when associated with flatus, and in bronchitis, and locally alone in earache and rheumatic complaints. The dose of the powder is from 10 to 20 grains; of the oil, from 1 to 10 drops. Oil of star-anise is largely employed to impart a flavor to spirits, especially in France, Germany and Italy.

3.2 g Coriander Seed

Coriander is a stimulant and carminative, and is employed in medicine as an adjuvant or corrigent. Its dose is from 20 to 60 grains.

Put the dry herbs in a large jar. Dampen slightly. Add 800 milliliters of 85-95 percent alcohol. Wine spirits make a better product than pure grain alcohol. Let steep for several days - a week is better - shaking occasionally. Then add 600 milliliters of water and let the whole macerate for another day. Decant off the liquid squeezing as much from the mass of herb as possible. Wet the herbs with some vodka and squeeze again. Recipe should give a little over a liter and a half of green liquor. It must then be distilled.
Color the distillate by again adding:
4.2 g mint
1.1 g melisssa
3.0 g wormwood
1.0 g citron peel
4.2 g liquorice root

Other Plants containing thujone:
Salvia officinalis L. - Sage (Leaf)
Salvia triloba L. - Greek Sage (Plant)
Artemisia dracunculus L. - Tarragon (Shoot)
Mentha x rotundifolia (L.) HUDSON - Applemint (Leaf)
Pycnanthemum tenuifolium SCHRAD. - Slenderleaf Mountain Mint (Shoot)
Mentha pulegium L. - European Pennyroyal (Plant)
Thymus orospedanus H. del VILLAR - Orosped Thyme (Plant)
Achillea millefolium L. - Yarrow (Plant)
Capsicum frutescens L. - Cayenne (Fruit)
Carum carvi L. - Caraway (Fruit)
Glycyrrhiza glabra L. - Licorice (Root)
Juniperus sabina L. - Sabine (Plant)
Matricaria recutita L. - Annual Chamomile (Plant)
Mentha arvensis L. - Cornmint (Plant)
Sassafras albidum (NUTT.) NEES - Sassafras (Root)
Satureja hortensis L. - Summer Savory (Plant)