• Codeinum acts primarily on the nervous system, leading to heightened sensitivity and disordered coordination.

• Trembling of the whole body.

• Involuntary twitching of muscles, especially in the arms and lower limbs.

• Itching with a feeling of warmth, numbness, and prickling sensations.

• Profound muscular weakness and lassitude.

• Marked sensitivity to pain; neuralgic affections.

• General feeling of discomfort and unease.

• Diabetes with nervous symptoms.

• General aggravation from touch and motion.

• Emaciation may be present.

• Codeinum affects the sensorium, circulation, and respiration.

• Codeinum acts more on the spinal cord than on the brain.

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• Mental confusion and difficulty concentrating.

• Irritability and impatience; easily angered.

• Anxiety and apprehension, especially about health.

• Dread of impending doom.

• Restlessness and a desire for constant change.

• Aversion to mental work; mental fatigue.

• Marked emotional sensitivity; easily moved to tears.

• Hysterical tendencies.

• Fear of being alone.

• Forgetfulness; difficulty remembering recent events.

• Indifference to surroundings.

• Depressed mood, with a feeling of hopelessness.

• Difficulty in thinking clearly.

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• Codeinum, an alkaloid derived from Opium (C18 H21 NO3), possesses a unique symptomatic profile.

• Primary action upon the nervous system, affecting sensory and motor functions.

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• Apathy and indifference to surroundings.

• Irritability and easily angered.

• Difficulty concentrating; mental confusion.

• Restlessness and anxiety, often without clear cause.

• Depression with a sense of hopelessness.

• Scalp sore after neuralgia.

• Headache, pressing or throbbing, often located in the forehead or temples.

• Vertigo, with a tendency to fall to the left.

• Sensation of a tight band around the head.

• Headache aggravated by mental exertion.

• Head feels too large.

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• Headache, especially in the forehead or occiput.

• Vertigo, with a tendency to fall.

• Heaviness and pressure in the head.

• Blurred vision.

• Pupils dilated or contracted.

• Sensitivity to light.

• Pain in the eyes, worse from using them.

• Double vision (diplopia).

• Dim vision, as if a mist were before the eyes.

• Flickering before the eyes.

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• Dimness of vision.

• Pupils may be contracted.

• Sensations of dryness or burning in the eyes.

• Tinnitus; ringing or buzzing in the ears.

• Impaired hearing.

• Pain in the ears.

• Sensation of fullness in the ears.

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• Tinnitus, buzzing, or ringing sounds.

• Impaired hearing.

• Dryness of the nasal passages.

• Frequent sneezing.

• Coryza with watery discharge.

• Loss of smell.

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• Dryness and congestion of the nasal passages.

• Sneezing.

• Loss of the sense of smell.

• Sore throat, with a raw, burning sensation.

• Difficulty swallowing.

• Hoarseness.

• Sensation of a lump in the throat.

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• Dryness and burning sensation in the throat.

• Difficulty swallowing.

• Hoarseness.

• Dry, hacking cough, worse at night.

• Difficult breathing (dyspnea).

• Feeling of constriction in the chest.

• Whooping cough-like paroxysms.

• Cough aggravated by lying down.

• Short, rapid breathing.

• Mucus in the trachea.

• Palpitations, with anxiety.

• Pain in the chest, sharp or stabbing.

• Irregular heartbeat.

• Feeling of oppression in the chest.

• Angina-like pains.

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• Slow pulse.

• Palpitations.

• Oppression in the chest.

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• Nausea and vomiting.

• Loss of appetite.

• Pain in the stomach, often relieved by eating.

• Belching and flatulence.

• Acidity in the stomach.

• Weight in the stomach after eating.

• Abdominal pain, cramping or colicky.

• Distension of the abdomen.

• Rumbling in the bowels.

• Tenderness in the abdomen.

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• Constipation.

• Abdominal distension with gas.

• Colicky pains.

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• Constipation, with hard, dry stools.

• Diarrhea, with watery, offensive stools.

• Tenesmus.

• Ineffectual urging to stool.

• Painful defecation.

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• Frequent urination, especially at night.

• Increased thirst.

• Increased sugar in the urine (glycosuria).

• Burning sensation during urination.

• Scanty urine.

• Involuntary urination.

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• Retention of urine.

• Frequent urination.

• Scanty urine.

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• Decreased libido.

• Impotence in men.

• Irregular menses in women.

• Leucorrhea.

• Painful menses.

• Suppression of menses.

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• Decreased libido.

• Impotence in males.

• Amenorrhea or irregular menstruation in females.

• Pain in the back, especially in the lumbar region.

• Stiffness in the back.

• Weakness in the back.

• Pain extending down the spine.

• Trembling of the hands and feet.

• Weakness in the limbs.

• Pain in the joints, worse from motion.

• Neuralgic pain in the limbs.

• Numbness and tingling in the hands and feet.

• Coldness of the extremities.

• Heaviness in the limbs.

• Cramps in the legs.

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• Weakness and heaviness in the limbs.

• Numbness and tingling in the extremities.

• Pains in the limbs, especially in the back.

• Trembling of the hands.

• Back pain, especially in the lumbar region.

• Itching, with feeling of warmth, numbness, and prickling sensations.

• Dry skin.

• Eruptions on the skin.

• Urticaria.

• Formication (sensation of ants crawling on the skin).

• Sleeplessness.

• Restless sleep.

• Vivid dreams.

• Dreams of danger.

• Difficulty falling asleep.

• Drowsiness during the day.

• Night.

• Cold.

• Touch.

• Motion.

• Mental exertion.

• Suppression of discharges.

• Lying down (for some symptoms).

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• Warmth.

• Rest.

• Lying down (for some symptoms).

• Open air.

• Bryonia, Belladonna, Hyoscyamus.

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• Opium, Nux Vomica.

• Nux Vomica, Opium.

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• Nux Vomica, Belladonna.

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• Morphinum, Hyoscyamus, Belladonna, Ignatia, Stramonium, Coffea.

• Cough, dry and hacking, often worse at night.

• Shortness of breath, especially on exertion.

• Nausea and vomiting.

• Loss of appetite or anorexia.

• Epigastric pain.

• Motion

• Night

• Cold

• Pressure

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• Rest

• Warmth

• Morphium, Opium, Coffea.