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Calamus, the Mysterious, Medicinal Bitter

 
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No discussion of Bitters would be complete without Calamus.   Calamus, or Sweet Flag, is not only one of man's most ancient medicines but it has unique qualities that make it particularly remarkable.  Acorus Calamus is an herbaceous plant that grows commonly near water.  This is one you can wildcraft if it grows in your area, but make sure the water is clean.  A better plan would be to install a small ornamental pond in your herb garden... or an herb spiral with a pool at the base, and grow your own Calamus.  The use of Calamus dates, at least back to ancient Egypt.  It is mentioned in the Chester Beatty Papyrus VI, dating to approximately 1600 BC (according to Wiki).


Illustration from an 1885 flora by Walther Otto Müller

Pliny mentions Calamus in The Natural History, Book 5, Chapter 8.

The use of Calamus, Acorus calamus, in the domestic medication of India, is recorded from the very earliest times. It is sold commonly in the bazaars, and Ainslie (7) in his Materia Medica of Hindoostan, 1813, states that in consequence of its great value in the bowel complaints of children, a severe penalty was placed on the refusal of any druggist to open his door in the night to sell calamus, when demanded. The antiquity of its use is shown from the fact that it was one of the constituents of the ointment Moses was commanded to make for use in the Tabernacle, (Ex. xxx), while the prophet Ezekiel says of the commerce of Tyre, "Bright iron, cassia, and calamus were in thy market." Theophrastus (633) mentions calamus, and Celsus (136), nearly two thousand years ago, refers to it as a drug from India. In the sixteenth century Amatus Lusitanus (16a) reports it as imported into Venice, and in 1692 Rheede (547) figures it as an Indian plant under the name Vacha, the same name being still applied to it on the Malabar Coast. From its tropical home calamus has spread until it is now found in all temperate climates suitable for its growth, the market supply coming mainly from Southern Russia, through Germany. The therapeutic use of calamus in pharmacy and licensed medicine is, as with other like substances, a gift of empiricism founded in the far distant past.  https://www.henriettes-herb.com/eclectic/lloyd-hist/acorus.html\

Amy Stewart writes in her book, The Drunken Botanist:

The rhizome has a complex, spicy, bitter flavor that lends itself to amoros like Campari and herbal liqueurs like Chartreuse, as well as gin and vermouth.  The flavor has been described as woodsy, leathery, and also creamy...  but.. Some verities of the plant contain a potentially carcinogenic compound called Alpha-asarone.  For this reason, the FDA has banned it as a food additive.  However, not all sweet flag is equally dangerous.  The American variety, called A. calamus var. americanus or A. americanus, does not have any significant quantity of the potential toxin and European strains also have relatively low levels.  The European Union acknowledges the plant is widely used in bitters, vermouths and liquers ...

According to DIY Bitters, by Guido Mase and Jovial King:

This cosmopolitan reed.. had two major varietals; one grows in India (and naturalizes into Asia and Europe) and the other is native to North America.  The North American species is deemed safer.  Both have a long history of use and are favored for their unique, spicy pungency.  In the Old World, Calamus was used in incense blends from Egypt to Solomon's Temple; in the New World, pieces of the rhizome were chewed to relieve fatigue and lighten the spirit.

According to Herbalist, Michael Moore, Acorus Calamus is mildly simulative for Upper GI, Lower GI, Respiratory, Cardiovascular, Lymphatic, Mucosa, Muscular-Skeletal, Parasympathetic Nervous System  and strongly simulative to the Sympathetic Nervous System.

The National Center for Biotechnology Information states:  Acorus calamus (Sweet flag) has a long history of use and has numerous traditional and ethnomedicinal applications. Since ancient times, it has been used in various systems of medicines such as Ayurveda, Unani, Siddha, Chinese medicine, etc. for the treatment of various aliments like nervous disorders, appetite loss, bronchitis, chest pain, colic, cramps, diarrhea, digestive disorders, flatulence, gas, indigestion, rheumatism, sedative, cough, fever, bronchitis, inflammation, depression, tumors, hemorrhoids, skin diseases, numbness, general debility and vascular disorders. Various therapeutic potentials of this plant have been attributed to its rhizome. A number of active constituents from leaves, rhizomes and essential oils of A. calamus have been isolated and characterized. Of the constituents, alpha and beta-asarone are the predominant bioactive components. Various pharmacological activities of A. calamus rhizome such as sedative, CNS depressant, anticonvulsant, antispasmodic, cardiovascular, hypolipidemic, immunosuppressive, anti-inflammatory, cryoprotective, antioxidant, antidiarrheal, antimicrobial, anticancer and antidiabetic has been reported. Genotoxicity and mutagenecity of beta and alpha-asarone is reported, which limits their use at high dosage. Though A. calamus has been used since ancient times, many of its uses are yet to be scientifically validated. In the present review an attempt has been made to explore traditional uses and pharmacological properties of A. calamus.     https://pubmed.ncbi.nlm.nih.gov/24200497/

But, wait... there's more!  Calamus also has a long history of use as a psychoactive substance.  If you dig around the murky corners of the web... or a physical library for that matter, probably half the information you will find on Calamus is its purported drug or "magical" effects.  According to "The Vaults of Erowid"..

SWEET FLAG (Acorus calamus), also called sweet calomel, grows in damp places in the north and south temperate regions. A member of the arum family, Araceae, it is one of two species of Acorus. There is some indirect evidence that Indians of northern Canada, who employ the plant as a medicine and a stimulant, may chew the rootstock as an hallucinogen. In excessive doses, it is known to induce strong visual hallucinations. The intoxicating properties may be due to a-asorone and ß-asarone, but the chemistry and pharmacology of the plant are still poorly understood.  https://www.erowid.org/library/books_online/golden_guide/g71-80.shtml#SWEETFLAG

The author who wrote about Calamus for "Erowid", had a rather hellish experience in using it as a hallucinogen, but eventually found a way to use it more subtly.  

On the other side of the coin is Maria Treben.  Her recommendations for Calamus used medicinally are nearly miraculous!  From Health Through God's Pharmacy:  






So, what is the verdict?  It seems to me that Calamus is a tried and true medicinal bitter herb.  It can be quite healthful and potentially dangerous if misused.  I use calamus in Bitters and in tea.  I have chewed the root on long hikes for endurance and mental clarity (that is another traditional use).  It is very bitter, but there is a nice sweetness lurking in the root as you chew it, once you get past the initial bitterness.   Frankly, I think it would take huge doses of a very concentrated for of the herb, used almost constantly to actually cause cancer in a healthy person (like tobacco, sassafras, comfrey and many other plants).... but, some people are very genetically prone to cancer.  Some people are exposed to massive carcinogens from chemicals and even electromagnetic fields in their daily environment.  Could Calamus be the "straw that broke the camels back" to to trigger cancer in certain people?  Likely, yes.  I am not recommending it.  I've used it it occasionally since I was 17 or so... "and I ain't dead yet."  So, I will leave you with my standard disclaimer at the end of this post.

Herb: Sweet Flag

Latin name: Acorus calamus

Family: Araceae (Arum Family)

Medicinal use of Sweet Flag: Sweet flag has a very long history of medicinal use in many herbal traditions. It is widely employed in modern herbal medicine as an aromatic stimulant and mild tonic. In Ayurveda it is highly valued as a rejuvenator for the brain and nervous system and as a remedy for digestive disorders. However, some care should be taken in its use since some forms of the plant might be carcinogenic - see the notes above on toxicity for more information. The root is anodyne, aphrodisiac, aromatic, carminative, diaphoretic, emmenagogue, expectorant, febrifuge, hallucinogenic, hypotensive, sedative, stimulant, stomachic, mildly tonic and vermifuge. It is used internally in the treatment of digestive complaints, bronchitis, sinusitis etc. It is said to have wonderfully tonic powers of stimulating and normalizing the appetite. In small doses it reduces stomach acidity whilst larger doses increase stomach secretions and it is, therefore, recommended in the treatment of anorexia nervosa. However if the dose is too large it will cause nausea and vomiting. Sweet flag is also used externally to treat skin eruptions, rheumatic pains and neuralgia. An infusion of the root can bring about an abortion whilst chewing the root alleviates toothache. It is a folk remedy for arthritis, cancer, convulsions, diarrhoea, dyspepsia, epilepsy etc. Chewing the root is said to kill the taste for tobacco. Roots 2 - 3 years old are used since older roots tend to become tough and hollow. They are harvested in late autumn or early spring and are dried for later use. The dry root loses 70% of its weight, but has an improved smell and taste. It does, however, deteriorate if stored for too long. Caution is advised on the use of this root, especially in the form of the distilled essential oil, since large doses can cause mild hallucinations. See also the notes above on toxicity. A homeopathic remedy is made from the roots. It is used in the treatment of flatulence, dyspepsia, anorexia and disorders of the gall bladder.

Propagation of Sweet Flag: Seed - best sown in a cold frame as soon as it is ripe. Stand the pot in about 3cm of water. Pot up young seedlings as soon as they are large enough to handle, keep them wet by standing the pots in shallow water and overwinter for the first year in a greenhouse or cold frame. Seed is rarely produced in Britain. Division in spring just before growth starts. Very easy, it can be carried out successfully at any time in the growing season and can be planted direct into its permanent positions.

Known hazards of Acorus calamus: The fresh root can be poisonous. When using the plant medicinally, the isolated essential oil should not be used. The essential oil in the roots of some populations of this plant contains the compound asarone. This has tranquillising and antibiotic activity, but is also potentially toxic and carcinogenic. It seems that these compounds are found in the triploid form of the species (found in Asia) whilst the diploid form (found in N. America and Siberia) is free of the compounds. However, the root (but not the isolated essential oil) has been used in India for thousands of years without reports of cancer which suggests that using the whole herb is completely safe, though more research is needed.

http://www.naturalmedicinalherbs.net/herbs/a/acorus-calamus=sweet-flag.php

https://southernappalachianherbs.blogspot.com/2020/09/calamus-mysterious-medicinal-bitter.html
 
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