Homeopathy 4 Health

The alternative medical modality of holistic, natural,

safe, individualised, side-effect-free and affordable health care

Hermes once separated two serpents entwined in mortal combat to bring about peace. These serpents were later included in the medical Caduceus as a sign of wellbeing.



















site stats










You are viewing: Homeopathics - Hydrochloric acid - Level 2
to  Homeopathics - Hydrochloric acid - Level 2

Hydrocyanic acid

Dr Peter's
Tabular Materia Media

Hydrocyanic acid

1. Description

Latin Name:
Hydrocyanic acid

Acide cyanhydrique, Acide cyanhydrique, Aero liquid hcn, Carbon hydride nitride (chn), DCN, Formonitrile, HCN, Hydridonitridocarbon, Hydrocyanic acid, Hydrocyanic acid, anhydrous, Hydrocyanic acid aqueous, Hydrocyanic acid, liquefied, Hydrogen cyanide, Hydrogen cyanide anhydrous, Hydrogen cyanide aqueous solution, Hydrogen cyanide alcohol solution, Hydrogen cyanide stabilised, Prussic acid, Prussic acid anhydrous, Prussic acid  stabilised, Prussic acid unstabilized.

Scroll right for
Getting the best from Dr Peter's MM

2. Source & History

Hydrocyanic acid (HCN), originally called prussic acid, is an organic acid which does not contain oxygen. It was first isolated from the dye Prussian blue by Pierre Macquer in 1752. HCN is also obtainable from fruits that have a pip, such as cherries, apricots, apples, and bitter almonds, from which almond oil and flavoring are made. Today it is synthetically produce by the reaction of methane and ammonia.

It was used by Nazi Germany in concentration camps and even today some US states employ it as a judicial means of execution. It also has applications as a crop pesticide, as a killing agent in whaling harpoons, in chemical warfare and in mining where the gas liberated upon decomposition is highly explosive.

3. Mentals & Generals

Click More below for General characteristics on Acids collectively.

More button

Discouraged, depressed, anguish which is felt in the pit of the stomach, averse to mental work,
Vacant, distant unconscious looking gaze
Vivid dreams of an unpleasant nature of hiding from the authorities or of pleasant times with family and friends. Fear of vehicles.
Convulsions & paralysis of a hysterical and epileptic nature express the constitutional condition. Constriction of the larynx, feeling of suffocation, tightness in chest, Pulmonary collapse.
Cyanosis with extreme coldness, marble coldness  within and without, particularly extremities, cold even on a warm day, shivering and shuddering.
The attacks appear with great suddenness and are accompanied with acute prostration, weakness & weariness of limbs, stiffness of muscles particularly back, and face
(It is interesting to note overtones of the holocaust in the above provings which were taken long before the historical event.)

4. Particulars

Brain feels on fire with violent headache
Tongue and jaws locked
Sinking sensation in epigastrium
Drink rumbles in stomach
Abdomen feels extremely cold.
Noisy, deep, gasping, agitated breathing.
Oppression of chest with feeling of suffocation and great pain.
Sleep difficult with much yawning.

            <     5. Modalities     >

After food
Open air


6. Keywords

Vacant, distant unconscious looking gaze
Fear of vehicles
Cyanotic lips & face
Extremities extremely cold
Stomach gurgling
Respiration difficult with much pain
Muscle stiffness jaw, tongue, back, extremities.

7. Clinicals

Respiratory problems, asthma
Stomach dyspepsia

8. Constitutional Prescribing

Click More above for further information on Constitutional types & treatment

The use of Hydr-ac is usually restricted to symptomatic situations. 
However as always it is the patient picture that is important especially the mental & general manifestations that are the key determinants for its Constitutional use.
High potency Constitutional prescription may be used as background together with a concurrent lower potency symptomatic remedy administered according to the Law of Similars in situations where two or more of the main symptoms occur together in the patient. For example
Asthma and Convulsions
Chest pain and Stomach dyspepsia with coldness. 

9. Relationships

Lauro, Oena.
Camph (coldness), Cicut (spinal cramp), Con (paralysis), Hell (respiration), Helod (coldness), Lach (asphyxia), Nux-v (tetanus)
Does not Follow Well
Remedies that Follow Well

10. Posology

For more information on Posology
click More button
More Button

Click More button below for computer software posology programme 
More Button
(A pop up window may appear requesting
User name and Password. Just click Cancel and proceed normally).

11. Further Information

Click More above for Classical information 
by Sylvian Cazalet Homeopathe International Reversed Kent's Repertory
Click More above for Contemporary information 
By Deborah Collins


HCN was used in German prison camps
HCN was used in German prison amps

An early painting using Prussian Blue by A Watteau (1710)
An early painting using Prussian Blue
by A Watteau (1710)

Kingdom: Plant
Latin Name: Hydrocyanicum  
Common Name: Hydrochloric acid or Prussic acid
Homeopahtic: Hydrochloric acid

Return Button
to Acids (General) Level 2 

Getting the Best from 
Dr Peter's 
Tabular Materia Medica

Materia Medica (MM) is Latin for medical material. MMs are a listing of remedies together with their respective symptoms and differ from Repertories which are a listing of symptoms and illnesses.


This Tabular MM is not presented as an exhaustive comprehensive list of all that is known about a remedy. Rather the opposite. It is intended to be used only as an aid memoire to highlight the foundation upon which by further study and experience a fuller knowledge of homoeopathics can be obtained. Consider the Tabular MM as a word picture showing a black and white sketch of the remedys main essential characteristics upon which colour, shade and tone has still be painted.


Remember to rank case symptoms according to their hierarchy giving first priority to
Mentals & Generals when comparing the MM remedy picture of one remedy against another.

Further information on
The Hierarchy of Symptoms

may be had by clicking
More Button

For more information about evaluating Modalities click
More Button

Remember also that you don't need to match everything listed under a remedy to benefit from the remedy. All that is required is to find the closest remedy match for those case  symptoms which rank the highest and are the most troublesome. The easiest way to find remedy matches is by Repertorisation. 


For more information on Repertorisation click 
More Button

Once the main case symptoms have been captured in say 4 - 6  remedies fine tune the final remedy selection manually by refering to the MM, or clicking the Further Information tabs or looking up any other approriate reference manual.  

Home | History & Basis | Homeopathics | Worldwide | Your Benefits | Your Consultation | Testimonials & Research |
Criticisms & Replies | News & Views | H4H Monographs | F.A.Q. | Links | Site Map | Who I Am | Code of Ethics | Acknowledgements | Contact