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Phosphoricum Acidum
MindVertigo, DizzinessHeadEyeVisionEarHearingNoseFaceMouthThroatAbdomenRectumStoolUrineGenitalsRespirationCoughExpectorationChestBackExtremities, LimbsSleepChillFeverPerspirationSkinInjuries And AccidentsGeneralitiesPhosphoricum Acidum AvailabilityBuy Phosphoricum Acidum


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Nitricum AcidumHydrofluoricum AcidumSulphuricum AcidumPicricum AcidumSalicylicum AcidumOxalicum AcidumLactic Acid.Aceticum AcidumCortisone AceticumHydrocyanicum AcidumManganum AceticumSarcolacticum AcidumCarbolic AcidFormic AcidUricum AcidumCuprum AceticumBaryta AceticaGallicum AcidumBoricum AcidumNitro Muriatic Acid.Zincum AceticumPlumbum AceticumSuccinum AcidumSarcolatic AcidChromicum Acidum

Phosphoricum Acidum

Phosphoric Acid, Phos acid,Acid Phos, Phos ac, Phos-ac, Phosph-ac, Phos. ac, Acidum phosphoricum

Boiron and HomeodelWHP - Washington HomeopathicHylands and Standard Homeopathic
Available in 2C-200C, 4X-200X, 1M-50M, CM from $6.50
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HPUS label indication: Headache

Below are the strongest indications of Phosphoricum Acidum in traditional homeopathic usage, not reviewed by the FDA.

The common acid "debility" is very marked in this remedy, producing a nervous exhaustion. Mental debility first; later physical. A congenial soil for the action of Phos. acid is found in young people who grow rapidly, and who are overtaxed, mentally or physically. Whenever the system has been exposed to the ravages of acute disease, excesses, grief, loss of vital fluids, we obtain conditions calling for it. Pyrosis, flatulence, diarrhoea, diabetes, rhachitis and periosteal inflammation. Neurosis in stump, after amputation. Hemorrhages in typhoid. Useful in relieving pain of cancer.
BETTER, from keeping warm. WORSE, exertion, from being talked to; loss of vital fluids; sexual excesses. Everything impeding circulation causes worse of symptoms.
Compare: Oenothera Biennis - Evening primrose - (Effortless diarrhoea with nervous exhaustion. Incipient hydrocephaloid. Whooping-cough and spasmodic asthma). Nectranda amare ( Watery diarrhoea, dry tongue, colic, bluish ring around sunken eyes, restless sleep.) China; Nux; Pic-ac.; Lactic-ac.; Phos.
Antidotes: Coffea.
First potency.

    MIND (click for more)

Cannot collect his thoughts or find the right word
Delirium, with great stupefaction
Difficult comprehension
Effects of grief and mental shock
Impaired memory ( Anac.) Apathetic, indifferent
Ailments after death of part of body

Aversions, dislikes; thinking


Delusions, imaginations, hallucinations, illusions

Emotions, feelings, attitude, disposition; indifference, apathy, etc.
Emotions, feelings, attitude, disposition; indifference, apathy, etc.; during chill
Emotions, feelings, attitude, disposition; indifference, apathy, etc.; during fever
Emotions, feelings, attitude, disposition; indifference, apathy, etc.; to everything
Emotions, feelings, attitude, disposition; irritability
Emotions, feelings, attitude, disposition; love; silent grief
Emotions, feelings, attitude, disposition; quiet disposition
Emotions, feelings, attitude, disposition; unhappy; sadness, mental depression; from masturbation

Excitement; ailments from emotional excitement

Home-sickness (see desires home)

Intellectual faculties; ideas; deficiency of ideas
Intellectual faculties; impaired thinking; difficulty concentrating
Intellectual faculties; impaired thinking; dull, sluggish
Intellectual faculties; impaired thinking; imbecility
Intellectual faculties; impaired thinking; weakness of mind

Memory; forgetful
Memory; forgetful; of words while speaking
Memory; weakness of memory

Mental symptoms from sexual excesses

Quiet, peace (or lack of); feeling of tranquillity
Quiet, peace (or lack of); quiet disposition

Symptoms follow intense emotions; ailments from grief
Symptoms follow intense emotions; disappointed love
Symptoms follow intense emotions; fright

Talking, conversation; answers not lucid; slowly
Talking, conversation; dislike of talking, desire to be silent, taciturn


Uncooperative; refuses to eat

Settled despair.

    HEAD (click for more)

Hair gray early in life; falls out

Hair thins out, turns gray early.

Pain as if temples were crushed together

crushing headache

Dull headache after coition; from eye-strain ( Nat-m.) Vertigo toward evening, when standing or walking

Brain; inflammation of brain; at spine
Brain; insufficient oxygen to brain

Heaviness (see pain; pressing); from mental exertion

Pain, headache; back of head (occiput)
Pain, headache; back of head (occiput); from emotions; after grief
Pain, headache; eyes and vision (affecting or affected by); from straining eyes
Pain, headache; from certain movements; rising (see morning, noon, night, etc., on rising, also movement; raising head); from lying
Pain, headache; from emotions
Pain, headache; from exertion; mental exertion
Pain, headache; pressing (see bursting, pulling); top of head (vertex)
Pain, headache; pressing (see bursting, pulling); top of head (vertex); inward
Pain, headache; school girls
Pain, headache; sides; one side
Pain, headache; with other pains; pain in nape of neck

Skin and scalp; perspiration; back of head (occiput)

Heavy; Confused

pressure on top

Worse, Shaking or noise

    EYE (click for more)

Lids inflamed and cold

Blue rings around

Pain as if eyeballs were forcibly pressed together and into head.

Amblyopia in masturbators

Averse to sunlight; sees colors as if a rainbow

Glassy appearance

Pain; burning, smarting, gnawing, biting

Feel too large

Glassy appearance

Optic nerves seem torpid

Pupils dilated

    VISION (click for more)


    EAR (click for more)

Noises in ear
Noises in ear; roaring
Noises in ear; while lying

Pain; cramp in
Pain; inside (in ear canal)
Pain; pulling in ear

Intolerant of noise.

Roaring, with difficult hearing

    HEARING (click for more)


    NOSE (click for more)



Bores fingers into nose

Nose bleed; from blowing the nose

Running or blocked nose (coryza); cold air

    FACE (click for more)

Inflammation; around bones of face

Skin; discoloration; pale
Skin; out-breaks on skin; crusty, scabby; lips

Pale, earthy; feeling of tension as from dried albumen

Sensation of coldness of one side of face.

    MOUTH (click for more)

At night, bites tongue involuntarily.

Bleeding gums; retract from teeth

Lips dry, cracked


Teeth; deposits on teeth during illness (see mucus)

Teeth feel cold

Tongue swollen, dry, with viscid, frothy mucus

    THROAT (click for more)

Tickling in the air passages; in trachea (wind pipe)

    ABDOMEN (click for more)

Distention and fermentation in bowels

Loud rumbling.

Pressure as from a weight, with sleepiness after eating ( Fel

Symptoms following sour food and drink

Bladder; urging to urinate (unhealthy desire); ineffectual
Bladder; urging to urinate (unhealthy desire); sudden
Bladder; urination; interrupted (intermittent); urine flows so thick, with cheesy masses like curdled milk

Stomach; burping, belching; food (regurgitation)
Stomach; desires, cravings; fruit
Stomach; desires, cravings; juicy things (see refreshing things)
Stomach; desires, cravings; refreshing things
Stomach; nausea; in throat
Stomach; without thirst


Enlarged spleen ( Ceanoth.) Aching in umbilical region


Sour risings

Stomach; Craves juicy things

tauri.) thirst for cold milk.

    RECTUM (click for more)

Diarrhoea; after catching cold; in summer
Diarrhoea; after certain foods or drinks; solid food
Diarrhoea; without weakness

Involuntary stool
Involuntary stool; on passing flatulence

    STOOL (click for more)

Diarrhoea in weakly, delicate rachitic children.

Diarrhoea, WHITE, watery, involuntary, Painless, with much flatus; not specially exhausting

Copious; which does not exhaust

Food appears to be passed undigested (lientery)



Thin, liquid
Thin, liquid; pouring out

Watery; like rice water
Watery; white

White; greyish white

Yellow; bright
Yellow; whitish

    URINE (click for more)

Micturition, preceded by anxiety and followed by burning


Frequent urination at night


Frequent, profuse, water, Milky

Albuminous (white, thick)

Cloudy; when standing up

Colour; pale
Colour; pale; while perspiring

Copious; during period

Milky; like curdled milk

Sediment; bloody
Sediment; phosphates

Sugar in urine

    GENITALS (click for more)

Female; Menses too early and profuse, with pain in liver

ACID.) Sexual power deficient; testicles tender and swollen

Eczema of scrotum

Female; flatulence from vagina

Male; erections; after emission
Male; thick emission from penis
Male; thick emission from penis; emission of prostatic fluid
Male; thick emission from penis; emission of prostatic fluid; during erections
Male; thick emission from penis; emission of prostatic fluid; during stool
Male; thick emission from penis; emission of prostatic fluid; during stool; difficult stool
Male; thick emission from penis; frequent

Herpes preputialis

Itching; yellow leucorrhoea after menses

Male; Emissions at night and at stool

Milk scanty; health deteriorated from nursing.

Oedema of prepuce, and swollen glans-penis

Parts relax during embrace ( Nux.) Prostatorrhoea, even when passing a soft stool

Seminal vesiculitis ( Oxal

Sycotic excrescences ( Thuja.)

    RESPIRATION (click for more)

Weak feeling in chest from talking ( Stann.) Pressure behind the sternum, rendering breathing difficult.

Chest troubles develop after brain-fag

Difficult respiration

Dry cough from tickling in chest


Salty expectoration

    COUGH (click for more)

Dry cough
Dry cough; evening; lying down

Tickling; chest
Tickling; in bronchia; where bronchia join (behind middle of breast bone)
Tickling; in wind pipe
Tickling; on talking


    CHEST (click for more)

Heart; palpitations
Heart; palpitations; anxiety

Movements in and of chest; fluttering

Heart; Palpitation in children, who grow too fast; after grief, self-abuse

Pulse irregular, intermittent.

    BACK (click for more)

Curvature of spine (scoliosis)

Pain; burning; neck
Pain; from sexual excesses
Pain; neck
Pain; pulling; lumbar (lower half of back)
Pain; sore, bruised, beaten; neck

Perspiration; neck

Weakness (tired feeling, in spine)
Weakness (tired feeling, in spine); sexual excesses

Boring pain between scapulae

Pain in back and limbs, as if beaten.

    EXTREMITIES, LIMBS (click for more)

Pains at night, As if bones were scraped

Stumbles easily and makes missteps

Great debility

Cramps in upper arms and wrists

Coldness; lower limbs; foot
Coldness; upper limbs; hands

Diseased hip-joint (see pain in hip)

Heat; foot; burning

Heaviness; tired limbs

Inflammation; bones
Inflammation; leg; shin bone

Numbness (see tingling); foot

Pain; aching; leg
Pain; aching; leg; shin
Pain; in bones
Pain; lower leg; growing pains
Pain; scraping
Pain; scraping; bones
Pain; scraping; leg, bones
Pain; sore, bruised; hip
Pain; sore, bruised; joints
Pain; sore, bruised; joints; morning
Pain; tearing; upper limbs; joints

Sensation of lightness

Skin; itching; like insects crawling on skin

Weakness; leg

Itching, between fingers or in folds of joints.

Tearing pains in joints, bones, and periosteum


    SLEEP (click for more)

Lascivious dreams with emissions.


Dreams; amorous

Sleepiness, tiredness

Sleeplessness, insomnia; night; after midnight

    FEVER (click for more)

Profuse sweat during night and morning


Continued fever; dazed from fever
Continued fever; evening

Internal heat

Low types of fever, with dull comprehension and stupor.

    PERSPIRATION (click for more)



During anxiety

Other symptoms worse after perspiring


    SKIN (click for more)

Falling out of the hair ( Nat-mur.; Selen.) Tendency to abscess after fevers.

Burning red rash

Formication in various parts

Pimples, acne, blood-boils

Abnormal growths; ulcers; bleeding
Abnormal growths; ulcers; coming and going quickly
Abnormal growths; ulcers; discharges; offensive
Abnormal growths; ulcers; painless, slow developing
Abnormal growths; ulcers; painless
Abnormal growths; ulcers; with jagged margins
Abnormal growths; wart-like growth

Discoloration; bluish; spots


Like insects crawling on skin

Out-breaks on skin; herpetic; moist
Out-breaks on skin; painful
Out-breaks on skin; pimples
Out-breaks on skin; rash (see granular)
Out-breaks on skin; suppressed

Pain; burning; spots
Pain; like bruising


Ulcers, with very offensive pus

    GENERALITIES (click for more)

After sleep

Bones; decay of bone; around the bone



General physical anxiety

Inflammation; bones
Inflammation; bones; around the bone

Insensitive to pain (see irritability)

Lack of irritability

Lack of reaction

Lethargic, tired
Lethargic, tired; after eating


Numbness; externally

Pain; around the bone
Pain; as if scraped; around the bone
Pain; bones
Pain; burning externally
Pain; constricting; internally

Pulse; abnormal
Pulse; frequent, accelerated, elevated, exalted, fast, innumerable, rapid
Pulse; intermittent
Pulse; irregular
Pulse; weak

Swelling; around the bone
Swelling; bones

Symptoms after perspiration

Symptoms after sexual intercourse; symptoms after sexual excesses

Symptoms from masturbation

Symptoms not symmetrical; symptoms on one side

Temperature (felt and effects of temperature); cold feeling; lack of vital heat
Temperature (felt and effects of temperature); from becoming cold

Weakness (see lethargic, weariness)
Weakness (see lethargic, weariness); after eating
Weakness (see lethargic, weariness); after emission
Weakness (see lethargic, weariness); from breast feeding
Weakness (see lethargic, weariness); from slight exertion
Weakness (see lethargic, weariness); morning
Weakness (see lethargic, weariness); morning; after rising
Weakness (see lethargic, weariness); morning; on rising
Weakness (see lethargic, weariness); paralytic
Weakness (see lethargic, weariness); paralytic; sliding down in bed
Weakness (see lethargic, weariness); walking

Weariness (see weakness)
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Homeopathic remedies are prescribed on the basis that in a tiny dilution like cures like, so while the very dilute homeopathic remedy may help, the raw product is often best avoided.

Entries on a white background are from Boericke's Materia Medica. Entries on a green background are from a reversed Kent's repertory, with some alterations to modernise the language. Uses are based on traditional homeopathic practice and have not been reviewed by the FDA.