Naja tripudians
Made from cobra venom — the serpent whose neurotoxin taught pharmacology the nerve-muscle junction, and the classical remedy of the malignant, low-pulse heart.
The whole picture, in one breath
Think of a heart that fails with a strange calm: palpitations with a slow, feeble pulse, pain and constriction about the heart with the left side involved, faintness and collapse without the Arsenicum terror, and the books' great serpent remedy of the heart. The calm-failing cobra heart: that is Naja.
The substance, in plain words
The cobra is the great hooded viper of Asia and Africa, its venom a genuine neurotoxin — alpha-bungarotoxin and its kin — that fixed the understanding of the nerve-muscle junction and the nicotinic receptor for modern pharmacology. Antivenom against it is real, life-saving medicine; the proving gave the remedy its cardiac portrait.
The traditional picture Classical sources
The inner state
- Strange calm with the illness. The keynote of the mind: suffering without complaint — a peculiar equanimity, unlike the anxious cardiac remedies.
- Anxiety at night. Under the calm, fear and restlessness at night.
- Irritability. Cross, worse from contradiction and from noise.
The body
- Palpitations with low pulse. The keynote: violent palpitations with a slow, feeble pulse — the books' great malignant-cardiac sign.
- Constriction about the heart. A sensation of pressure and constriction encircling the heart, worse lying on the left side.
- Left-side involvement. The left arm, the left side of the chest — the books record the serpent's leftward path.
- Faintness and collapse. Sinking, fainting, without the cold sweat of Veratrum or the anxiety of Arsenicum — Naja's signature.
- Worse lying on the left. The quoted position modality of the remedy.
- Better for rest and open air Rest and quiet steady the failing pump.
Modalities (worse and better factors)
| Worse from ⬇ | Better from ⬇ |
|---|---|
| lying on the left side; exertion; night; cold. | rest; quiet; warmth. |
Where it acts (organ affinities)
Heart and circulation, left side, respiration, general vitality.
Where the classical picture comes from
The cobra's neurotoxic chemistry — paralysing quietly, calmly — gave the proving its equanimous failing-heart portrait; Naja became the classical remedy of the malignant, low-pulse cardiac state, standing with Crotalus and Lachesis in the venom chapter of the heart.
The substance in real medicine Pharmacology
What this section is: the pharmacology and toxicology of the source substance. It is not clinical evidence that a homeopathic preparation of it treats any condition. What controlled trials do and do not show is set out on the Evidence page.
Cobra neurotoxins are genuinely foundational pharmacology: alpha-bungarotoxin mapped the nicotinic acetylcholine receptor and the entire neuromuscular junction — tools that built modern neuroscience. Cobra antivenom saves thousands of lives yearly. The venom that paralyses quietly taught science how muscles listen to nerves; few sources in the library carry so real a laboratory legacy.
Look-alikes (how the classical authors told it apart)
| Remedy | Looks similar because… | Tells it apart because… |
|---|---|---|
| Cactus grandiflorus | Heart constriction | Cactus is the iron band with the left-arm radiation; Naja the constriction with the low pulse and the calm. |
| Digitalis purpurea | Slow failing heart | Digitalis is slow with nausea and dropsy; Naja slow with calm and the left side. |
| Lachesis muta | Serpent remedies | Lachesis is hot, talkative and worse after sleep; Naja calm and low-pulsed. |
| Arsenicum album | Prostration, anxiety | Arsenicum is anxious, chilly and sipping; Naja is calm and quietly failing. |