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Phosphoric acid

INDICATIONS Indications: PHOSPHORICUM ACIDUM Headache.

Checked against the official label · Updated

Sold without prescription in some countries Oral

Phosphoric acid: quick answers

Used for
INDICATIONS Indications: PHOSPHORICUM ACIDUM Headache.
Usual adult dose
Adults: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic.
Children
Children: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic.
Prescription
Sold without prescription in the United States; rules differ by country.

From the official label (Jan 2025). Your prescription and pharmacist come first.

How to use Phosphoric acid

What the official label says. If a doctor prescribed it, follow the prescription. Your pack's leaflet comes first if it is different.

Who it is for

INDICATIONS Indications: PHOSPHORICUM ACIDUM Headache

How to take it and how often
  • Adults: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic
  • Practitioner
  • Take at greater intervals as condition subsides
  • Children: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic
  • Practitioner
  • Take at greater intervals as condition subsides
Warnings

STOP USE AND ASK DOCTOR If symptoms persist/worsen or if pregnant/nursing, stop use and consult your practitioner.

How to store it

Keep out of reach of children.

If you miss a dose

Take it when you remember, unless it is nearly time for the next dose. Then skip the missed one. Never take two doses at once to make up for it. Check your leaflet, as some medicines are different.

From the official U.S. FDA label for this active ingredient. Your pack may have a different strength, so always read its leaflet. If a doctor prescribed it, follow the prescription. Ask a pharmacist if you are unsure. Label dated 2025-01-28.

Brands around the world

Products with Phosphoric acid as the active ingredient. Names differ between countries.

Registered products

United States (FDA)

Oss-regenPHOSPHORIC ACID 3 [hp_X]/100mL, ANGOSTURA BARK 4 [hp_X]/100mL, FERULA ASSA-FOETIDA RESIN 3 [hp_X]/100mL · Solution/ Drops · PEKANA Naturheilmittel GmbH
NDC 59469-153Label
Phosphoricum AcidumPHOSPHORIC ACID 15 [hp_C]/15[hp_C] · Pellet · Boiron
NDC 0220-4008Label
Phosphoricum AcidumPHOSPHORIC ACID 30 [hp_C]/30[hp_C] · Pellet · Boiron
NDC 0220-4009Label
Naturasil Acne AcnePHOSPHORIC ACID 6 [hp_X]/10mL · Liquid · Nature's Innovation, Inc.
NDC 10893-100Label
Viral HpATROPA BELLADONNA 30 [hp_X]/mL, ECHINACEA ANGUSTIFOLIA 30 [hp_X]/mL, EUPATORIUM PERFOLIATUM FLOWERING TOP 30 [hp_X]/mL · Liquid · Zorex International
NDC 81825-0008Label

Nigeria (NAFDAC)

NAFDACD & M Robin's Hospital Disinfectant## (strength format) A11-100620

Other countries: check your pack's registration number and we point you to your regulator.

Check your pack of Phosphoric acid

Type the registration number on the pack, or scan it with your camera.

Or take photos of the pack
3 free checks left today Official sources: U.S. FDA · EMA (EU) · Health Canada · WHO alerts

Questions about Phosphoric acid

What is Phosphoric acid used for?

INDICATIONS Indications: PHOSPHORICUM ACIDUM Headache (From the official U.S. FDA label.)

How do I take Phosphoric acid?

Follow your prescription or the leaflet in your pack. The official label says: Adults: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic. Practitioner. Take at greater intervals as condition subsides. Children: Dissolve 3 to 5 under the tongue three times a day or as directed by Lic. Practitioner. Take at greater intervals as condition subsides.…

Can I take Phosphoric acid while breastfeeding?

If pregnant/nursing,. Ask your doctor or midwife first.

Do I need a prescription for Phosphoric acid?

In many countries Phosphoric acid is sold without a prescription in some strengths. Rules differ by country, so ask a pharmacist.

What brands contain Phosphoric acid?

Phosphoric acid is sold under names such as Freamine Iii 10, Hepatamine 8, Procalamine 3, Aminosyn 3.5 % M, Sulfite Free, Emetrol, Phosphoricum Acidum Kit Refill. Brand names differ between countries.

Can children take Phosphoric acid?

The label gives a separate dose by age: Children: Dissolve 3 to 5 under. Check the pack or ask a pharmacist.

How can I check that my Phosphoric acid is genuine?

Scan the registration number on your pack with PillVera (NAFDAC number in Nigeria, NDC in the United States, DIN in Canada), check the expiry date and buy only from licensed pharmacies.

Sources

This page shows what official sources say, in plain words. It is not medical advice: your prescription and your doctor or pharmacist come first. Brand names, strengths and rules differ between countries.