Natrum phosphoricum is a homeopathic remedy used for the natural treatment of:

• digestive problems
• GERD
• acid reflux
• heartburn
• bloating
• belching 
• gas
• acidity

 Natrum muriaticum is a homeopathic remedy used for the natural treatment of:

• migraines
• headaches
• canker sores
• cold sores
• blisters
• sunstroke
• depression
• eczema
• psoriasis
• ringworm

Nitric acid is a homeopathic remedy used for the natural treatment of:

•  warts
• anal fissures
• ulcers
• urinary tract infections
• sore throats
• gingivitis
• sore, bleeding gums

From Boericke:

(Nitric Acid) Selects for its special seat of action the outlets of the body where the mucous membrane and skin meet; these pain AS FROM SPLINTERS. STICKING pains. Marked improvement of all symptoms while riding in a carriage. Acts best on the dark complexioned and past middle life. Syphilis, after abuse of Mercury. Pains appear and disappear quickly. (BELL.) Hydrogenoid constitution. Sycotic remedy. Blisters and ulcers in mouth, tongue, genitals; bleed easily. Fissures, with pain during stool, as if rectum were torn. All discharges very offensive, especially urine, faeces, and perspiration. Persons who have chronic diseases, and take cold easily and disposed to diarrhoea. Excessive physical irritability. Cachexia, due to syphilis, scrofula, intermittent fever with liver involvement and anemia, etc. Gravel; arthritis. Capillary bleeding after currettage.

Mind
IRRITABLE, hateful, vindictive, headstrong. Hopeless despair. Sensitive to noise, pain, touch, jar. Fear of death.

Head
Sensation of a BAND AROUND HEAD. Headache from pressure of hat; full feeling; worse from street noises. Hair falls out. Scalp sensitive.

Ears
Difficult hearing; better by riding in carriage or train. VERY SENSITIVE TO NOISE, as the rattle of wagons over pavements. (COFF.; NUX.) Cracking in ears when chewing.

Eyes
Double vision; SHARP, STICKING PAINS. Ulceration of cornea. Gonorrheal ophthalmia, photophobia, constant lachrymation. Syphilitic iritis.

Nose
Ozaena. Green casts from nose every morning. Coryza, with sore and bleeding nostrils. Tip red. Stitches, as of a splinter in nose. CARIES OF MASTOID. NOSEBLEED, with chest affections. Chronic nasal catarrh, with yellow, offensive, CORROSIVEdischarge. Nasal diphtheria, with watery and exceedingly excoriating discharge.

Mouth
Putrid breath. Salivation. Bleeding of gums. Painful pimples on the sides of the tongue. TONGUE CLEAN, RED AND WET WITH CENTER FURROW. Teeth become loose; gums soft and spongy. ULCERS IN SOFT PALATE, WITH SHARP, SPLINTER-LIKE PAINS. Salivation and fetor oris. BLOODY SALIVA. Throat. Dry. Pain into ears. Hawks mucus constantly. White patches and SHARP POINTS, AS FROM SPLINTERS, on swallowing.

Stomach
Great hunger, with sweetish taste. Longing for indigestible things-chalk, earth, etc. Pain in cardiac orifice. Dyspepsia with excess of oxalic acid, uric acid and phosphates in urine and great mental depression. LOVES FAT AND SALT. (SULPH.)

Abdomen
Great straining, but little passes. Rectum feels torn. Bowels constipated, with fissures in rectum. Tearing pains during stools: Violent cutting pains AFTER STOOLS, LASTING FOR HOURS. (RATANH.) Haemorrhages from bowels, profuse, bright. Prolapsus ani. Haemorrhoids bleed easily. Diarrhoea, slimy and offensive. After stools, irritable and exhausted. Colic relieved from tightening clothes. Jaundice, aching in liver. Urine. Scanty, dark, OFFENSIVE. Smells like horse's urine. COLD ON PASSING. Burning and stinging. Urine bloody and albuminous. Alternation of cloudy, phosphatic urine with profuse urinary secretion in old prostatic cases.

Male
Soreness and burning in glans and beneath prepuce. Ulcers; burn and sting; exude, offensive matter.

Female
External parts sore, with ulcers. (HEP.; MERC.; THUJA.) Leucorrhoea brown, flesh-colored, watery, or stringy, offensive. Hair on genitals falls out. (NATR. M.; ZINC.) Uterine haemorrhages. Menses early, profuse, like muddy water, with pain in back, hips and thighs. Stitches through vagina. Metrorrhagia after parturition.

Respiratory
Hoarseness. Aphonia, with dry hacking cough, from tickling in larynx and pit of stomach. Soreness at lower end of sternum. SHORT BREATH ON GOING UPSTAIRS. (ARS.; CALC.) Cough during sleep. (CHAM.)

Extremities
Fetid foot-sweat, causing soreness of toes, with sticking pain; chilblains on toes. Sweating of palms, hands; cold, blue nails. Offensive sweat in axillae at night.

Skin
Warts, large jagged; bleed on washing. Ulcers bleed easily, sensitive; splinter-like pains; zigzag, irregular edges; base looks like raw flesh. Exuberant granulations. Black pores on face, papules worse on forehead.

Modalities
WORSE, evening and night, cold climate, and also HOT weather. BETTER, while riding in carriage. (Reverse: COCCULUS.)

Relationship
Complementary: ARS.; CALAD.; LAC CAN.; SEPIA. Inimical: LACH. Compare: MERC; KALI C; THUJA; HEPAR; CALC.

Dose
Sixth potency. As the nitric acid patient begins to improve skin symptoms may appear for a time, a favorable indication.

Nux vomica (colubrina) is a homeopathic remedy used for the natural treatment of:

• indigestion
• constipation
• irritablity
• nausea and vomiting during pregnancy
• headaches
• migraines
• gastritis
• ulcers
• heartburn
• urinary tract infections with ineffectual urging

From Boericke:

 (Poison-nut) Is the greatest of polychrests, because the bulk of its symptoms correspond in similarity with those of the commonest and most frequent of diseases. It is frequently the first remedy, indicated after much dosing, establishing a sort of equilibrium of forces and counteracting chronic effects. Nux is pre-eminently the remedy for many of the conditions incident to modern life. The typical Nux patient is rather thin, spare, quick, active, nervous, and irritable. He does a good deal of mental work; has mental strains and leads a sedentary life, found in prolonged office work, overstudy, and close application to business, with its cares and anxieties. This indoor life and mental strain seeks stimulants, coffee, wine, possibly in excess; or, again, he hopes to quiet his excitement, by indulging in the sedative effects of tobacco, if not really a victim, to the seductive drugs, like opium, etc. These things are associated with other indulgences; at table, he takes preferably rich and stimulating food; wine and women play their part to make him forget the close application of the day. Late hours are a consequence; a thick head, dyspepsia, and irritable temper are the next day's inheritance. Now he takes some cathartic, liver pills, or mineral water, and soon gets into the habit of taking these things, which still further complicate matters. Since these frailties are more yielded to by men than women, Nux is pre-eminently a male remedy. These conditions produce an IRRITABLE, nervous system, hypersensitive and over impressionable, which Nux will do much to soothe and calm. Especially adapted to digestive disturbances, portal congestion, and hypochondrical states depending thereon. Convulsions, with consciousness; worse, touch, moving. ZEALOUS FIERY TEMPERAMENT. Nux patients are easily chilled, avoid open air, etc. Nux always seems to be out of tune; inharmonious spasmodic action.

Mind
Very IRRITABLE; sensitive to all impressions. Ugly, malicious. CANNOT BEAR NOISES, ODORS, LIGHT, etc. Does not want to be touched. Time passes too slowly. Even the least ailment affects her greatly. Disposed to reproach others. SULLEN, FAULTFINDING.

Head
Headache in occiput or over eyes, with VERTIGO; brain feels turning in a circle. Oversensitiveness. VERTIGO, WITH MOMENTARY LOSS OF CONSCIOUSNESS. Intoxicated feeling; worse, morning, mental exertion, tobacco, alcohol, coffee, open air. Pressing pain on vertex, as if a nail driven in. Vertigo in morning and after dinner. Scalp sensitive. Frontal headache, with desire to press the head against something. Congestive head-ache, associated with haemorrhoids. HEADACHE IN THE SUNSHINE. (GLON.; NAT. CARB.) Feels distended and sore within, after a debauch.

Eyes
Photophobia; much worse in morning. Smarting, dry sensation in inner canthi. Infra-orbital neuralgia, with watering of eyes. Optic nerve atrophy, from habitual use of intoxicants. Paresis of ocular muscles.; worse, tobacco and stimulants. Orbital twitching radiating towards the occiput. Optic neuritis.

Ears
Itching in ear through Eustachian tube. Auditory canal dry and sensitive. Otalgia; worse in bed. Hyperesthesia of auditory nerves; loud sounds are painful, and anger him.

Nose
Stuffed up, at night especially. STUFFY COLDS, SNUFFLES, after exposure to dry, cold atmosphere; worse, in warm room. Odors tend to produce fainting. Coryza; fluent in daytime; STUFFED UP AT NIGHT AND OUTDOORS; or alternates between nostrils. Bleeding in morning. (BRY.) Arid discharge, but WITH STUFFED-UP FEELING.

Mouth
Jaws contracted. Small aphthous ulcers, with BLOODY SALIVA. First half of tongue clean; posterior covered with deep fur; white, yellow, cracked edges. Teeth ache; worse, cold things. Gums swollen, white, and bleeding. Throat. ROUGH, SCRAPED FEELING. TICKLING after waking in morning. Sensation of ROUGHNESS, tightness, and tension. Pharynx constricted. Uvula swollen. STITCHES INTO EAR.

Stomach
Sour taste, and NAUSEA IN THE MORNING, AFTER EATING. WEIGHT AND PAIN IN STOMACH; WORSE, EATING, SOME TIME AFTER. Flatulence and pyrosis. Sour, bitter eructations. NAUSEA AND TOMITING, with much retching. Ravenous hunger, especially stout a day before an attack of dyspepsia. REGION OF STOMACH VERY SENSITIVE TO PRESSURE. (BRY.; ARS.) Epigastrium bloated, with pressure as of a stone, SEVERAL HOURS AFTER EATING. Desire for stimulants. Loves FATS and tolerates them well. (PULS. opposite.) Dyspepsia from drinking strong coffee. Difficult belching of gas. Wants to vomit, but cannot.

Abdomen
BRUISED SORENESS OF ABDOMINAL WALLS. (APIS.; SULPH.) Flatulent distention, with spasmodic colic. Colic from uncovering. Liver engorged, with stitches and soreness. Colic, with upward pressure, causing short breath, and desire for stool. WEAKNESS OF ABDOMINAL RING REGION. Strangulated hernia. (OP.) Forcing in lower abdomen towards genitals. Umbilical hernia of infants.

Stool
Constipation, WITH FREQUENT INEFFECTUAL URGING, incomplete and unsatisfactory; FEELING AS IF PART REMAINED UNEXPELLED. Constriction of rectum. Irregular, peristaltic action; hence FREQUENT INEFFECTUAL DESIRE, OR PASSING BUT SMALL QUANTITIES AT EACH ATTEMPT. ABSENCE OF ALL DESIRE FOR DEFACATION IS A CONTRA-INDICATION. Alternate constipation and diarrhoea-after abuse of purgatives. Urging to stool felt throughout abdomen. ITCHING, BLIND HEMORRHOIDS, with ineffectual urging to stool; very painful; after drastic drugs. Diarrhoea after a debauch; worse, morning. Frequent small evacuations. Scanty stool, with much urging. Dysentery; stools RELIEVE PAINS FOR A LIME. CONSTANT UNEASINESS IN RECTUM. Diarrhoea, with jaundice. (DIG.) Urine. Irritable bladder; from spasmodic sphincter. Frequent calls; little and often. Haematuria. (IPEC; TEREB.) Ineffectual urging, spasmodic and strangury. Renal colic extending to genitals, with dribbling urine. While urinating, itching in urethra and pain in neck of bladder.

Male
Easily excited desire. Emissions from high living. Bad effects of sexual excesses. Constrictive pain in testicles. Orchitis. (HAMA.; PULS.) Spermatorrhoea, with dreams, backache, burning in spine, weakness and irritability.

Female
Menses TOO EARLY, lasts too long; ALWAYS IRREGULAR, blood BLACK (CYCL.; LACH.; PULS.) with faint spells. PROLAPSUS UTERI. DYSMENORRHOEA, with pain in sacrum, and constant urging to stool. Inefficient labor-pains; extend to rectum, with desire for stool and frequent urination. (LIL.) Desire too strong. Metrorrhagia, with SENSATION AS IF BOWELS WANTED TO MOVE.

Respiratory
Catarrhal hoarseness, with SCRAPING IN THROAT. Spasmodic constriction. ASTHMA, WITH FULLNESS IN STOMACH, MORNING OR AFTER EATING. Cough, with sensation as if something were torn loose in chest. SHALLOW RESPIRATION. OPPRESSED BREATHING. Tight, dry, hacking cough; at times with bloody expectoration. COUGH BRINGS ON BURSTING HEADACHE and bruised pain in epigastric region.

Back
Backache in lumbar region. Burning in spine; worse, 3 to 4 a. m. Cervico-brachial neuralgia; worse, touch. MUST SIT UP IN ORDER TO TURN IN BED. Bruised pain below scapulae. Sitting is painful.

Extremities
Arms and hands go to sleep. Paresis of arms, with shocks. Legs numb; feel paralyzed; cramps in calves and soles. Partial paralysis, from overexertion or getting soaked. (RHUS.) Cracking in knee-joints during motion. Drags his feet when walking. Sensation of sudden loss of power of arms and legs in the morning.

Sleep
CANNOT SLEEP AFTER 3 a. m. UNTIL TOWARDS MORNING; AWAKES FEELING WRETCHEDLY. Drowsy after meals, and in early evening. Dreams full of bustle and hurry. BETTER AFTER A SHORT SLEEP, unless aroused.

Skin
BODY BURNING HOT, ESPECIALLY FACE; YET CANNOT MOVE OR UNCOVER WITHOUT FEELING CHILLY. Urticaria, with gastric derangement. Acne; skin red and blotchy.

Fever
Cold stage predominates. Paroxysms anticipate in morning. Excessive rigor, with BLUENESS OF FINGER-NAILS. Aching in limbs and back, and gastric symptoms. Chilly; MUST BE COVERED in every stage of fever. Perspiration sour; only one side of body. CHILLINESS ON BEING UNCOVERED, YET HE DOES NOT ALLOW BEING COVERED. Dry heat of the body.

Modalities
WORSE, morning, mental exertion, after eating, touch, spices, stimulants, narcotics, dry weather, cold. BETTER, from a nap, if allowed to finish it; in evening, while at rest, in damp, wet weather (CAUST.), strong pressure.

Relationship
NUX seeds contain copper, notice the cramp-causing proclivities of both. Complementary: SULPHUR; SEPIA. Inimical: ZINC. Compare: STRYCHNIA. Compare: KALI CARB.; HYDR.; BRY.; LYC; GRAPH. Antidotes: COFF.; IGNAT; COCC.

Dose
First to thirtieth potency and higher. Nux is said to act best given in the evening.

Petroleum is a homeopathic remedy used for the natural treatment of:

• eczema
• psoriasis
• dry cracked heels
• dry cracked hands
• herpes

 From Boericke:

(Crude Rock-oil) Strumous diathesis, especially the dark type, who suffer from catarrhal conditions of the mucous membranes, gastric acidity and cutaneous eruptions. Very marked skin symptoms, acting on sweat and oil glands. Ailments are worse during the winter season. Ailments from riding in cars, carriages, or ships; lingering gastric and lung troubles; chronic diarrhoea. LONG-LASTING COMPLAINTSfollow mental states-fright, vexation, etc. Chlorosis in young girls with or without ulceration of the stomach.

Mind
Marked aggravation from mental emotions. Loses his way in streets. Thinks he is double, or someone else lying alongside. FEELS THAT DEATH IS NEAR, AND MUST HURRY TO SETTLE AFFAIRS. Irritable, easily offended, vexed at everything. LOW-SPIRITED, WITH DIMNESS OF SIGHT.

Head
Sensitive, AS OF A COLD BREEZE BLOWING ON IT. Feels numb, as if made of wood; OCCIPUT HEAVY, AS OF LEAD. (OPIUM.) VERTIGO ON RISING, felt in occiput, as if intoxicated, or like seasickness. MOIST ERUPTION ON SCALP; worse, back and ears. Scalp sore to touch, followed by numbness. Headache, must hold temples to relieve; provoked by shaking while coughing. Use thirtieth.

Eyes
Loss of eyelashes. Dim sight; far-sighted; cannot read fine print without glasses; blenorrhoea of lachrymal sac; MARGINAL BLEPHARITIS. Canthi fissured. Skin around eyes dry and scurfy.

Ears
Noise unbearable, especially from several people talking together. Eczema, intertrigo, etc., in and behind ears, with intense itching. Parts sore to touch. Fissures in meatus. Dry catarrh, with deafness and noises. Ringing and cracking in ears. Chronic Eustachian catarrh. Diminished hearing.

Nose
NOSTRILS ULCERATED, CRACKED, BURN; tip of nose itches. Epistaxis. Ozaena, with scabs and muco-purulent discharge.

Face
Dry; feels constricted, as if covered with albumin.

Stomach
Heartburn; hot, sharp, sour eructation. Distension. Feeling of great emptiness. Strong aversion to fat food, meat; worse, eating cabbage. HUNGER, immediately after stool. NAUSEA, with accumulation of water in mouth. Gastralgia when stomach is empty; relieved by constant eating. (ANAC; SEP.) Ravenous hunger. Must rise at night and eat. (PSORIN.) Odor of garlic.

Abdomen
DIARRHEA ONLY IN THE DAYTIME; watery, gushing and ITCHING OF ANUS. After cabbage; with empty feeling of stomach.

Male
Herpetic eruption on perineum. Prostate inflamed and swollen. Itching in urethra.

Female
Before menses, throbbing in head. (KREOS.) Leucorrhoea, profuse, albuminous. (ALUM.; BOR.; BOV.; CALC. P.) Genitals sore and moist. Sensation of moisture. (EUP. PURP.) Itching and mealy coating of nipple.

Respiratory
Hoarseness. (CARBO; CAUST.; PHOS.) Dry cough and oppression of chest at night. Cough produces headache. Oppression of chest; worse, cold air. Dry cough at night, coming deep from chest. Croup and laryngeal diphtheria.

Heart
Sensation of coldness. (CARB. AN.; NAT. MUR.) Fainting, with ebullitions, heat, and palpitation.

Back
Pain in nape of neck, stiff and painful. Weakness in small of back. Coccyx painful.

Extremities
Chronic sprains. Fetid sweat in axillae. Knees stiff. TIPS OF FINGERS ROUGH, CRACKED, FISSURED EVERY WINTER. Scalding sensation in knee. Cracking in joints.

Skin
Itching at night. Chilblains, moist, itch and burn. Bed-sores. SKIN DRY, CONSTRICTED, VERY SENSITIVE, ROUGH AND CRACLED, LEATHERY. Herpes. Slightest scratch makes skin suppurate. (HEPAR.) Intertrigo; psoriasis of hands. THICK, GREENISH CRUSTS, BURNING AND ITCHING; REDNESS, RAW; CRACKS BLEED EASILY. Eczema. Rhagades WORSE IN WINTER.

Fever
Chilliness, followed by sweat. Flushes of heat, particularly of the face and head; worse at night. Perspiration on feet and axillae.

Modalities
WORSE, DAMPNESS, before and during a thunderstorm, from riding in cars, PASSIVE MOTION; IN WINTER, eating, from mental states. BETTER, warm air; lying with head high; dry weather.

Relationship
Compare: CARBO; GRAPH.; SULPH.; PHOS. Complementary: SEPIA. Antidotes: NUX; COCCUL.

Dose
Third to thirtieth and higher potencies. Material doses often better.