What is Acidum chromicum?

Acidum chromicum is a single remedy used in homeopathy. It is also called chromic acid. Homeopaths give it for thick, stringy mucus in the nose and throat.

It is also used for a sore throat with a hoarse voice. Some homeopaths give it for nasal polyps (small soft growths inside the nose). Long use within a tradition is not proof that a remedy works.

The remedy is made by diluting chromic acid over and over. At 30C, none of the starting acid is left. Trials do not show any effect beyond placebo (a dummy pill).

How does Acidum chromicum work?

Homeopathy rests on an idea called like cures like. The idea is that a substance which causes symptoms in a well person can treat those same symptoms in a tiny dose.

Chromic acid burns the nose, throat and skin of people who work with it. Homeopaths chose it for complaints that look like that damage. This is a rule of thumb, not a proven action in the body.

The liquid is shaken and diluted in steps. By 30C, the chance that even one molecule of the acid is left is close to zero. No one has shown a way for it to act, and trials do not tell it apart from placebo.

What forms does Acidum chromicum come in?

You will most often see small sugar pills soaked in the diluted liquid. Liquid drops in water and alcohol are also sold. Common strengths are 6C, 12C, 30C and 200C.

The C means the liquid was diluted one part in a hundred, again and again. A 30C has been through that step thirty times. Raw chromic acid is a lab chemical and is never sold to the public as a remedy.

Where it comes from:

Chromic acid came into homeopathy in the 1800s. Homeopaths of that time gave substances to healthy people and wrote down what those people felt. Those notes, called provings, shaped how the remedy is used today.

It has always been a small remedy. It sits in old prescribing books beside other acid remedies. No tradition outside homeopathy uses it.

What does Acidum chromicum help with?

• Thick, stringy mucus in the nose and throat: This is the classic picture in old homeopathy books. The mucus is said to be tough and hard to cough up. No human trial has tested the remedy for it, so this rests on tradition alone.
• Sore throat with a hoarse voice: Homeopaths pick it when the throat feels raw and the voice fades. There is no trial evidence to support this use. A sore throat with fever, or one that lasts over a week, needs a doctor.
• Postnasal drip (mucus running down the back of the throat): Old texts describe mucus dripping down the throat at night. This use comes from provings, not from studies. Nothing has been published that tests it in people.
• Nasal polyps (small soft growths inside the nose): Some homeopaths list the remedy for polyps. No study shows that it shrinks them. Any growth in the nose should be looked at by a doctor, since some growths are serious.
• Morning hoarseness in singers and speakers: Traditional use covers a rough voice that eases as the day goes on. Again, there are no human trials. A hoarse voice that lasts more than three weeks needs to be checked.

What are the side effects of Acidum chromicum?

• No known side effects from 30C pills, which hold no chromic acid
• A short flare of symptoms that homeopaths call an aggravation (a brief worsening)
• A small sugar load from the pills, which counts if you track carbs
• Rare rash or itching, most likely from the lactose (milk sugar) or the alcohol in drops
• Delay in getting care that works, which is the main risk
• Burns and poisoning from raw chromic acid, which is a lab chemical and not the remedy

Good to know:

Side effects from 30C pills are very rare. There is nothing in them but sugar, water and alcohol.

The real risk is not the pills. It is using them in place of care that works. See a doctor if your symptoms are bad, or if they last more than a few days.

How much Acidum chromicum should you take?

• Recommended daily: No safe and useful dose has been set, because no trial has shown the remedy works. Labels on shop products usually say to take three to five pills of a 30C, two or three times a day. Homeopaths often give fewer doses and then wait. Follow the label on the pack you buy, and do not take more in the hope of a stronger effect.
• Best time of day: There is no set time. Most labels suggest spaced doses through the day.
• With or without food: Labels often say to take it away from food, drink and strong tastes like mint or coffee. There is no evidence that this changes anything. It is a custom within homeopathy.
• Time to effect: No reliable time can be given. Colds and sore throats clear on their own, so any change may simply be the illness passing.
• How long to take it: Keep any trial short, a few days at most. Stop and see a doctor if nothing changes, or if you feel worse. Do not use it for weeks on end for a symptom you have not had checked.