Natrum Arsenicosum, also known as Arseniate of Sodium, is a homeopathic remedy primarily used for respiratory ailments, nasal catarrh, and skin conditions such as psoriasis.
It works well in cases where there is significant weakness and fatigue following a cold, helping to conserve strength and improve appetite.
This remedy is particularly useful for chronic bronchitis in children and nasal problems with headaches.

Table of Contents
ToggleSOURCE INFORMATION
Scientific Classification
- Kingdom: Mineral
- Class: Sodium compound with arsenic
- Formula: Na₃AsO₄
Origin and Historical Facts
- Natrum Arsenicosum is derived from Sodium Arseniate, a compound historically used in small doses for various medical purposes, particularly in treating chronic respiratory and skin conditions.
- The use of this remedy dates back to early homeopathic practices when arsenic-based compounds were explored for their powerful healing properties.
DRUG PATHOGENESIS
- Natrum Arsenicosum primarily affects the respiratory system, skin, and mucous membranes.
- It is known to act on both acute and chronic conditions, particularly those that involve catarrhal inflammation (excessive mucus discharge) and psoriatic skin lesions.
- The remedy facilitates the resolution of colds, improves breathing, and strengthens the body after illness.
PHYSICAL CONSTITUTION
This remedy suits individuals who tend to be:
- Thin and weak, with a tendency to become tired easily.
- Prone to chronic respiratory issues like bronchitis and nasal catarrh.
- Suffer from skin conditions, especially psoriasis or dry, scaly skin lesions.
WHAT IS CONSTITUTION IN HOMOEOPATHY?
DIATHESIS
- Predisposition to catarrhal and psoriatic conditions.
WHAT IS DIATHESIS IN HOMOEOPATHY?
TEMPERAMENT
- Individuals are often anxious, restless, and mentally fatigued, with a tendency to become weak and irritable.
WHAT ARE TEMPERAMENTS IN HOMOEOPATHY?
THERMAL STATE
- Cold intolerance: Patients prefer warmth and often feel worse in cold weather.
MIASM
- The remedy is mainly associated with the sycotic miasm, which relates to conditions involving mucus membrane disorders, chronic respiratory problems, and skin afflictions like psoriasis.
KEY CHARACTERISTICS
- Nasal catarrh, often with a headache and pain at the root of the nose.
- Psoriasis, especially when accompanied by bronchial symptoms.
- Post-nasal discharge of thick, yellow mucus.
- Chronic bronchitis in children over seven years old.
- General weakness and fatigue after illness.
PSYCHOLOGICAL PROFILE
- Anxiety and restlessness, particularly when ill or after physical exertion.
- Mental fatigue and weakness, accompanied by irritability.
- Prone to nervousness due to respiratory symptoms or skin conditions.
DETAILED ORGAN SYMPTOMS
HEAD SYMPTOMS
- Floating sensation when turning the head quickly, indicating a sense of imbalance or light-headedness.
- Aching in the frontal region (forehead) and at the root of the nose, with pain extending over the eye sockets (orbits).
- This type of headache can worsen with pressure or exposure to tobacco smoke.
NOSE SYMPTOMS
- A watery discharge from the nose that drips into the throat.
- The nose feels stopped up (blocked) with a sensation of pressure and pain at the root of the nose.
- Dry crusts form inside the nose, and removing them leaves the mucous membrane raw and irritated.
- Post-nasal dripping of thick, bland, yellow mucus.
- Crusts in the nose, which contribute to discomfort.
EYE AND EAR SYMPTOMS
- Catarrhal conjunctivitis: Inflammation of the eye’s conjunctiva due to mucus discharge.
- Blepharitis marginalis: Inflammation at the edges of the eyelids.
- Eyes feel weak with stiffness in the eyeballs, and the eyelids tend to droop as though they are too heavy to keep open.
- Eyes burn and become dry, often tiring quickly.
- Lachrymation (excessive tearing) occurs when exposed to the wind.
- Agglutination of the eyelids in the morning, meaning they stick together.
- Swelling (oedema) in the orbital region, causing puffiness around the eyes.
- Pain above the eyes (supraorbital pain).
THROAT SYMPTOMS
- The throat appears dark, purplish, and swollen with oedema (fluid buildup), creating a red, glassy look.
RESPIRATORY SYMPTOMS
- A racking cough with profuse greenish expectoration (mucus expelled during coughing).
- Oppression or a feeling of tightness in the chest and around the heart, as well as in the larynx (voice box).
- Miner’s asthma, a condition where the lungs feel as though smoke has been inhaled, causing breathing difficulties.
EXTREMITIES SYMPTOMS
- Aching in the arms, particularly in the shoulder area.
- Pain in the anterior crural nerves (nerves located in the thigh region).
- Stiff joints, especially in the arms and legs.
- A general sense of tiredness, with stiffness and cracking in the knee joints when moving.
MODALITIES
- Worse from: Pressure, tobacco smoke, cold weather.
- Better from: Warm surroundings and fresh air.
WHAT ARE MODALITIES IN HOMOEOPATHY?
RELATIONSHIP WITH OTHER REMEDIES
Compare with,
- Arsenicum Album: Similar respiratory and skin conditions.
- Kali Carbonicum: For chronic catarrh and bronchial conditions.
- Apis: For oedematous and swollen conditions, especially in the throat.
DOSE
- Third to thirtieth potency, depending on the severity and chronicity of symptoms.
Frequently Asked Questions
What conditions does Natrum Arsenicosum treat?
- It treats nasal catarrh, psoriasis, chronic bronchitis, and post-nasal discharge.
What are its key indications?
- Indications include headache, respiratory distress, racking cough, and psoriatic skin lesions.
How should the remedy be taken?
- It is commonly administered in the third to thirtieth potency, depending on the case. Always follow a homeopath’s recommendation for dosage.
Glossary of Terms
- Catarrh: Excessive discharge or buildup of mucus.
- Miasm: A constitutional tendency or predisposition to chronic disease.
- Psoriasis: A chronic skin condition characterized by red, scaly patches.
- Conjunctivitis: Inflammation of the outermost layer of the eye and inner surface of the eyelids.
- Crural nerves: Nerves located in the thigh region.