Mercurius Cyanatus.

Mercurius Cyanatus.

Bicyanide of Mercury. Mercuric Cyanide. Hg (CN)2. Solution. Trituration.


Clinical.-Diphtheria. Dysentery. Enteric fever. Haemorrhages. Kerato-iritis syphilitica. Phlebitis. Throat, sore. Varicosis.


Characteristics.-The history of this remedy is a romantic one. When Dr. Alexander Villers was an infant he had diphtheria. Known remedies had failed to arrest the disease, and his father, Dr. Dominic von Villers, was in despair. Taking counsel with his friend, Dr. Beck (of Monthey in Switzerland), the latter was struck with the likeness of the case to the effects of Merc. cy. in some poisoning cases, reports of which he had just been reading. He suggested the remedy A small quantity of the salt was procured and an attenuation rapidly made and administered. Improvement soon set in, and recovery happily followed. The patient, saved by Merc. cy., lived to do most brilliant work with the same remedy when practising in St. Petersburg, and Merc. cy. has taken a sure place at the head of remedies for this affection. The local symptoms are very clearly defined, and among the general symptoms profound prostration, coldness, and cyanosis are leading indications. Villers had better results with the 30th than with any lower attenuation. Merc. cy. is also a very efficient prophylactic in diphtheria. In the sensational New York poisoning case of February, 1899, Mr. Henry C. Barnett, the victim, was treated for diphtheria by his doctors before the cause of the illness was discovered. Beck (Rev. Hom. Fran., xii. 153) mentions among the leading symptoms: extreme feebleness, trembling, syncope. Icy coldness; general coldness with nausea. Diphtheritic membrane in throat, mouth, and at anus. Nash reports as particularly indicating it a chronic sore throat of public speakers, with rawness in spots and a broken-down appearance, as if about to ulcerate, and this additional condition-“it hurts the patient to speak.” Haemorrhages occur, dark and persistent. Swallowing is impossible or = severe cutting pains. Thought of food = retching. There are varicose veins with great tenderness on left leg. Symptoms are < after eating.


Relations.-Compare: Ar. tri., Caust., Hep., K. bi., Phyt., Echin., Lach., Gels.




1. Mind.-Excitement, anger, raved furiously at attendant.-Excessive ill-humour after eating a little too much.


2. Head.-Vertigo with singing in ears, < sitting up.-Very severe, tearing headache, esp. forepart, < night.


3. Eyes.-Eyes: sunken; fixed; injected; pupils dilated.-(Syphilitic kerato-iritis; much inflammation; severe nocturnal pains.)


4. Ears.-Ringing in ear.


5. Nose.-Profuse epistaxis several times a day for two weeks.


6. Face.-Face: flushed; cyanotic; pale and wan.


8. Mouth.-Teeth painful; gums swollen, covered with white adherent layers, under which is found a violet border.-Tongue: pale with a yellowish streak on base; swollen with red edges; grey, metallic-looking coat; eight blisters on l. margin and on soft palate, opening and becoming irregular ulcers; afterwards on r. margin.-Lips, tongue, and inside cheeks dotted with greyish-white ulceration.-Large grey leathery ulcer in mouth.-Inflammation of whole buccal cavity; salivation; fetid breath; great pain on swallowing.-Taste: bitter; disagreeable; styptic; metallic.


9. Throat.-Great redness of fauces with difficulty of swallowing.-White opalescent coating, like mucous patches on faucial pillars and tonsils.-Roughness of throat, difficult swallowing.-Follicular tonsillitis, < r.-(Chronic sore throat of public speakers; raw, sore, broken-down appearance, raw in spots; it hurts to speak.-Nash.).-Diphtheria; profound prostration.-Uvula oedematous.


11. Stomach.-Aversion to food.-Intense thirst, but drinks are speedily vomited.-Burning thirst, vomits but not ingesta; cannot endure soups or hot drinks, which always seem too salt.-Incessant hiccough.-Violent retching from merely thinking of sugared water.-Milk >.-Epigastrium sensitive to pressure.


12. Abdomen.-Abdomen soft, not painful on pressure.-Excessive colic < by every evacuation.


13. Stool and Anus.-Round anus: small piles; pains (and in rectum) when sitting; sensitive light red swelling; diphtheritic deposit.-Frequent urging to stool with tenesmus.-Frequent diarrhoea preceded by severe colic.-Offensive, green, slimy stools.-Bloody stools.-Scanty stools.-Obstinate constipation (later effect).


14. Urinary Organs.-Micturition painful.-Urine: albuminous; amber yellow; retained; completely suppressed.


15. Male Sexual Organs.-Semi-erection of penis (persisting even after death).-Dark blue colour of scrotum and penis (persisting after death).


17. Respiratory Organs.-Slight cough.-Hoarseness; talking = pain in throat.


19. Heart.-Violent and abrupt beating of heart.-Strong palpitation.


21. Limbs.-Slight spasms of extremities.


22. Upper Limbs.-Severe pain in l. calf; the veins of the part form two hard cords meeting above popliteal space, very painful to slightest touch; leg swells when standing.-(Inflammation of articular cartilages of r. wrist, with oedema of forearm.)


24. Generalities.-Great weakness; cannot stand up.-Repeated fainting.-Great debility during diarrhoea; at last he fell to the ground in a swoon.


25. Skin.-Skin moist and cold.-Scarlatina.


26. Sleep.-Drowsiness with easy waking.


27. Fever.-Icy coldness.-Great sensitiveness to cold.-Extremities very cold; in evening.-Skin moist and cold.

“Materia Medica” is a term commonly used in the field of homeopathy to refer to a comprehensive collection of information on the characteristics and therapeutic uses of various natural substances, including plants, minerals, and animal products.

One such work is “Materia Medica,” a book written by Benoit Mure, a French homeopath, in the 19th century. The book is considered a valuable resource for homeopaths and is still widely used today.

In “Materia Medica,” Mure provides detailed information on over 100 homeopathic remedies, including their sources, preparation methods, physical and mental symptoms, and indications for use. He also discusses the philosophy and principles of homeopathy, as well as its history and development.

The book is known for its clear and concise writing style, and it has been praised for its accuracy and depth of knowledge. It remains a popular reference for homeopaths and students of homeopathy.

Overall, “Materia Medica” by Benoit Mure is an important work in the field of homeopathy and is highly recommended for anyone interested in learning about the use of natural remedies in the treatment of various health conditions.

Online Materia Medica 

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Homoeopathy studies the whole person. Characteristics such as your temperament, personality, emotional and physical responses etc. are of utmost importance when prescribing a remedy. Thus please give as much information as possible and answer as many questions as possible. The answer boxes will scroll to meet your needs. You can ask for professional advice on any health-related and medical subject. Medicines could be bought from our Online Store or Homeopathic store near you.

Homoeopathy is a system of alternative medicine that is based on the concept of “like cures like.” It uses highly diluted substances that are believed to cause similar symptoms as the illness being treated.

There are many online homoeopathic Materia medica, which are resources that list and describe the properties and uses of different homoeopathic remedies. Some popular online homoeopathic Materia medica include:

Boericke’s Materia Medica: A comprehensive reference guide to homoeopathic remedies, including information on their uses, indications, and dosages.

Clarke’s Dictionary of Homeopathic Materia Medica: A well-respected and widely used reference that includes information on the symptoms that each remedy is used to treat.

Homeopathic Materia Medica by William Boer Icke: A popular homoeopathic reference book that provides in-depth information on a wide range of remedies, including their indications, symptoms, and uses.

The Complete Repertory by Roger van Zandvoort: A comprehensive online reference that provides information on remedies, symptoms, and indications, and allows users to search for treatments based on specific symptoms.

There are many writers who have contributed to the development of homoeopathic materia medica. Some of the most well-known include:

Samuel Hahnemann: The founder of homoeopathy, Hahnemann wrote extensively about the use of highly diluted substances in treating illness. He is best known for his work “Organon of the Medical Art,” which outlines the principles of homoeopathy.

James Tyler Kent: Kent was an American homoeopathic physician who is known for his contributions to homoeopathic materia medica. He wrote “Repertory of the Homeopathic Materia Medica,” which is still widely used today.

William Boericke: Boericke was an Austrian-American homoeopathic physician who wrote the “Pocket Manual of Homeopathic Materia Medica.” This book is considered one of the most comprehensive and widely used homoeopathic reference books.

George Vithoulkas: Vithoulkas is a Greek homoeopathic physician and teacher who has written several books on homoeopathic materia medica, including “The Science of Homeopathy” and “Essence of Materia Medica.”

Robin Murphy: Murphy is an American homoeopathic physician who has written several books on homoeopathic materia medica, including “Homeopathic Clinical Repertory” and “Homeopathic Medical Repertory.”

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