Nitricum acidum 30 (nitric acid, Aqua fortis in the old books) is the homeopathic dilution of HNO₃. Homeopaths classically give it when skin and mucosa meet — anus, mouth, urethra, nose — and the pain is splinter-like, with offensive discharges and jagged warts that bleed on washing. A properly made 30C contains no corrosive acid. Laboratory nitric acid and any “strong” tincture mishandled as a drink will burn tissue. This is not a cancer cure and not a substitute for fissure surgery when a chronic fissure needs it.

This article is for people searching nitric acid 30 uses, nitricum acidum for fissures, or nitric acid for warts. It is not a protocol for swallowing acid, treating syphilis, or delaying a rectal bleed work-up.
| Item | Detail |
|---|---|
| Source | Nitric acid, HNO₃ |
| Also written | Nit-ac, Nitric acid, Acidum nitricum, Aqua fortis (historical) |
| Lab / concentrated acid | Corrosive oxidiser — never ingest, never “detox” |
| 30C / 200C | Empty of HNO₃ if manufactured properly |
| Q / low x | Residual acid possible — not a home experiment |
| Main classical uses | Splinter pains at orifices, fissures, jagged bleeding warts, offensive urine |
| Usual home potency | 30C, short picture, then stop |
| Safety in one line | The number on the label is the whole safety story |
Boericke: it “selects the outlets of the body where mucous membrane and skin meet”; pains as from splinters; dark-complexioned, past middle life; offensive urine, stool and sweat; fissures with pain during stool as if the rectum were torn; jagged warts that bleed on washing; better riding in a carriage.
It is not a treatment for syphilis, a mouthwash made from drain cleaner, or an HPV virucide. The old page mixed industrial HNO₃ chemistry with piles and dysentery as if they were one bottle. Concentrated nitric acid causes severe chemical burns. That chemistry does not apply to a 30C globule and does apply if someone pours acid from a hardware shop. Chronic anal fissure care is stool softening, GTN/diltiazem ointment, and sometimes surgery — see anal fissures. Warts: salicylic acid / cryotherapy, not aqua fortis — see warts and Thuja. Mouth ulcers that last more than two weeks need a dentist or physician — see mouth ulcers.
Anus. Fissure with splinter, sticking pain lasting hours after stool; haemorrhoids that bleed easily; offensive stool. This does not close a chronic fissure the way a lateral sphincterotomy can. Blood mixed with stool, weight loss or a change in bowel habit after 50 is a colonoscopy conversation, not Nit-ac.
Warts. Large, jagged, bleed when washed. Thuja is the greasy sycotic wart; Nit-ac is the splinter-bleed wart.
Mouth. Ulcers with splinter pain on the palate or tongue edges; cracked corners; offensive breath as a picture. Thrush, neutropenia and oral cancer mimics still need a look.
Urine. Offensive, cold, smelling like horse urine in the old text; burning and stinging. Culture when infection is likely — see urine infection and Cantharis.
Mind. Irritable, vindictive, despairing — a Boericke colour, not an antidepressant.
| Form | What is in it | Typical use | Repeat |
|---|---|---|---|
| Lab HNO₃ | Concentrated acid | Industry — never medicine | Burns; 108 / 112 |
| Q / low x | Possible residual acid + alcohol | Not DIY | Prescriber only |
| 6C | Trace possible | Matching acute orifice pain | Short course |
| 30C | No HNO₃ | Splinter-pain picture | 3–5 globules, then stop |
| 200C | Empty | Constitutional | Not daily |
Boericke’s “sixth potency” line is historical. Indian OTC search is nitric acid 30. Do not “step down” toward material acid because a fissure hurt.
30C / 200C. Vehicle only; brief sharpening of the pictured pain. See homeopathy side effects.
Material acid. Immediate burns to mouth, oesophagus, stomach, eyes and skin. Do not induce vomiting as a home trick. Emergency services.
| Remedy | Picture | Not Nit-ac when |
|---|---|---|
| Nit-ac | Splinter at orifices, offensive, jagged bleed-on-wash warts | Greasy seedy Thuja wart without splinter |
| Thuja | Fig-warts, damp, greasy | Splinter and offensive outlets are Nit-ac |
| Graphites | Honey-crust cracks, obese chilly | Graphites is more sticky discharge than splinter |
| Paeonia / Ratanhia pictures | Post-stool anal burning hours long | Nit-ac is splinter-stick more than mere burn |
| Hepar | Splinter, chilly, suppurating | Hepar is more abscess-ready and cold-sensitive |
WeClinic is in Panki, Kanpur. Hours are 10 AM–9 PM, closed Monday. Packages run about Rs 1,600–5,000. Call +91 7905136461 if the splinter-orifice picture is a known Nit-ac one — after bleed, infection and “do not drink acid” have been thought about.
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