What is Naphthalinum?
Origin and source. Naphthalinum is prepared from naphthalene, a crystalline hydrocarbon obtained from coal tar, familiar in its crude form as the substance historically used as a moth repellent. In homeopathy the purified naphthalene is taken through the standard process of serial dilution and succussion to prepare the remedy used in practice. As a homeopathic preparation it is highly diluted and defined by its symptom picture in the materia medica, distinct from any chemical or industrial use of the substance.
Preparation in homeopathy. As with all homeopathic remedies, the starting hydrocarbon is progressively diluted and succussed so that the final preparation is highly diluted. What remains is a remedy defined by its symptom picture in the materia medica rather than by any material quantity of the original substance. The proving of Naphthalinum recorded a distinctive cluster of urinary, gastric, skin, and head symptoms, and these are the themes that guide its traditional use.
Historical place in homeopathy. Naphthalene and its homeopathic preparation entered the materia medica through the study of coal-tar derivatives, documented in the standard repertories of Allen. It is remembered as a small but well-defined remedy whose picture is centred on the urinary tract -- sand, gravel, renal colic, and haematuria -- with accompanying gastric irritation, urticaria, and a headache with nausea that recalls the effect of coal-tar products. The older provings also noted eye affections, including opacity of the cornea and dimmed sight. This urinary-and-cutaneous signature gives Naphthalinum its identity among the many remedies that touch the kidney and skin.
How the remedy is understood. In the homeopathic method a remedy is chosen because the totality of a person's symptoms -- physical, general, and mental -- resembles the symptom picture the substance produced when proved. Naphthalinum is therefore not prescribed for a diagnosis such as "kidney stone"; it is prescribed for a person whose individual pattern of urinary gravel, renal colic, gastric irritation, and urticaria matches the remedy's documented picture. This distinction is central to responsible homeopathic practice and to reading this page correctly: the remedy names a pattern, never a cure.
Key Characteristics
- Urinary gravel and renal colic -- sand-like sediment with spasmodic kidney pain.
- Haematuria and dysuria -- blood in the urine with difficult, burning passage.
- Gastric irritation and vomiting -- nausea, burning, loss of appetite.
- Skin eruptions and urticaria -- itching, eczema-like, photosensitivity-like rashes.
- Headache with nausea -- a supraorbital head pain like the coal-tar effect.
- Opacity of cornea / eye affections -- dim sight recorded in provings.
- Irritable, despondent mind -- a dull, low mental state.
- Worse from odours and fats, better from open air -- traditional modalities.
Traditional Symptom Picture
In homeopathic practice, Naphthalinum is traditionally considered when a person's symptom pattern includes the themes above. The picture is built system by system:
Head
A supraorbital headache with vertigo and a heavy head accompanied by nausea is described, recalling the characteristic head effect of coal-tar exposure.
Eyes
Corneal opacity and dimmed sight are recorded in the older provings -- a notable but less-common feature that requires conventional eye review.
Nose
Not a leading feature; addressed as part of the whole constitution.
Throat
Not a primary sphere; dryness may accompany the general state.
Skin
Urticaria, itching, eczema, and photosensitivity-like eruptions are described -- the cutaneous sphere sits with the urinary and gastric picture.
Mind
Irritable, despondent, and dull -- a low mental state rather than a primary emotional disturbance.
Constitution & temperament
A sensitive, irritabile constitution with a tendency to urinary, gastric, and skin disturbance and a dislike of odours and fats.
Respiratory
Asthma, oppressed breathing, and cough are described, generally as part of the broader irritable constitution.
Digestive
Nausea, vomiting, gastric burning, loss of appetite, and liver congestion are described, with the gastric irritation running alongside the urinary and skin complaints.
Heart
Palpitation and irregularity are recorded, reflecting the general irritability rather than a primary cardiac state. Any cardiac sensation must be evaluated conventionally.
Urinary
The principal sphere. Sand and gravel, renal colic, haematuria, dysuria, and sediment resembling coffee-grounds are described, with nephritic irritation. Blood in the urine must always be reviewed medically.
Extremities
Rheumatic pains and weakness are described, generally as part of the broader irritable, toxic-sensitive constitution.
Modalities
Worse: from odours, from fats. Better: open air.
Every symptom is read as part of an individual's complete picture. Two people with the same diagnosis may receive different remedies.
Conditions Where Practitioners May Consider Naphthalinum
The conditions below are ones where homeopathic practitioners traditionally discuss Naphthalinum as one possible remedy among many, selected by the individual's complete symptom picture. Each links to its live condition overview and (where available) its in-depth guide.
Homeopathy individualises; responsible care includes medical diagnosis where indicated.
Common Patient Questions
- "I pass sand in my urine with flank colic -- could Naphthalinum be considered?" Urinary gravel with renal colic is a classic Naphthalinum feature, but only a qualified homeopath can confirm the match, and blood in the urine or severe flank pain must be reviewed by a physician.
- "I get itchy urticaria and feel nauseated -- is this my remedy?" Practitioners may consider Naphthalinum where skin eruptions join gastric irritation; it is one option among several, and persistent rash or vomiting needs medical assessment.
- "My headaches come with nausea like a chemical smell -- does that fit?" Supraorbital headache with nausea is in the Naphthalinum picture; individualised assessment is needed.
- "I've noticed dimness of sight -- could the remedy relate?" Corneal opacity and dim sight are recorded in older Naphthalinum provings; any eye change must be evaluated by an ophthalmologist promptly.
Potencies
Homeopathic preparations use potency scales indicating dilution and succussion:
- 6C / 30C -- lower Centesimal potencies, traditionally used in milder or more superficial presentations.
- 200C -- a higher potency, traditionally for deeper or constitutionally-matched cases.
- 1M -- a high potency used occasionally in individualised practice.
- LM -- a gentle, sequential potency format for sensitive individuals.
Potency is individualised -- chosen by the practitioner from your constitution and response. We do not advise self-selection of potency.
Dosage
Homeopathic dosage varies by individual: constitution, acuity, potency, and response. The practitioner sets the plan and reviews at follow-up; self-dosing over long periods is discouraged as it can obscure the remedy's effect.
Safety & Precautions
- Pregnancy & breastfeeding: discuss with your physician and a qualified homeopath.
- Children: practitioner-led remedy selection.
- Existing conditions / medications: homeopathy is a distinct system of medicine; keep your physician informed and continue prescribed treatment as needed.
- Urgent care: blood in urine, severe flank or abdominal pain, inability to pass urine, sudden eye changes, or any severe acute symptom -- seek conventional medical care promptly.
Side Effects
- Homeopathic aggravation: a brief, temporary intensification may occur as the remedy acts; judged by the practitioner.
- Stop & consult if symptoms worsen persistently or new severe symptoms appear.
Who May Benefit?
Framed as symptom patterns, not diagnoses: urinary sand and gravel with renal colic; haematuria and dysuria; gastric irritation with nausea and burning; urticaria and itching eruptions; supraorbital headache with nausea; recorded dimness of sight. Benefit is individual; a matching pattern -- not a disease label -- is what the practitioner assesses.
Who Should Avoid Self-Medicating?
Anyone with blood in the urine, severe flank or abdominal pain, inability to pass urine, or eye changes; pregnant/breastfeeding women without guidance; infants/young children; people with known kidney disease or on nephrotoxic medication without medical review.
Naphthalinum vs Other Remedies
Comparison tables show why remedy choice is individualised -- pattern contrasts, not rankings.
Naphthalinum vs Benzinum
Benzinum is the broader coal-oil derivative with urinary and skin themes -- see benzinum for the contrast.
Naphthalinum vs Terebinthina
Terebinthina is the turpentine type with kidney and urinary burning -- see terebinthina for the distinction.
Naphthalinum vs Berberis Vulgaris
Berberis vulgaris is the shooting, radiating kidney-stone type -- see berberis-vulgaris for the contrast.
Naphthalinum vs Lycopodium
Lycopodium is the bloated, right-sided, flatulent liver-kidney type -- see lycopodium for the distinction.
Naphthalinum vs Cantharis
Cantharis is the violent, burning, tenesmus urinary type -- see cantharis for the contrast.
Related Remedies
- Terebinthina -- kidney and urinary burning.
- Berberis Vulgaris -- renal colic, gravel.
- Lycopodium -- urinary and liver-kidney constitution.
- Cantharis -- burning dysuria.
- Sulphur -- deep urinary and skin constitution.
- Arsenicum Album -- burning, anxious urinary type.
- Nux Vomica -- gastric and urinary irritability.
- Phosphorus -- sensitive, bleeding type.
