Does a higher number always mean a stronger effect?

No. In homeopathy, potency describes the number of dilution and succussion steps, not a simple strength rating. Higher dilutions are generally described as acting at a different level rather than more forcefully. Treating the number as a straightforward strength scale is one of the most common errors.

What is the difference between 30C and 30X?

The number is the same but the scale differs. C (centesimal) uses a 1:100 dilution at each step, while X or D (decimal) uses 1:10. The two preparations are not equivalent, which is why the scale letter should always be written and read.

Should potency be increased if there is no response?

Not automatically. An unsatisfactory outcome more often points to the remedy choice, the repetition schedule, or the original case assessment. Changing the potency is the quickest change to make but frequently the least informative one. A qualified practitioner can help review the whole picture.

Can I choose a potency myself from a guide like this?

This guide explains terminology and common errors; it does not provide individual prescribing advice. Potency selection is part of a clinical decision that also involves remedy choice and follow-up. For any severe, worsening, or unclear presentation, seek qualified medical assessment.

Aconitum Napellus Potency Selection: A Glossary of Mistakes

Why potency selection is a separate skill from remedy selection

Choosing Aconitum napellus is one decision; choosing the potency is another, and the two are governed by different logic. In homeopathy, the remedy name identifies what is prescribed, while the potency identifies how the substance is prepared and diluted. A practitioner can be entirely confident about the remedy and still get a poor result because the strength was mismatched to the case in front of them.

The word potency in homeopathy does not mean pharmacological strength in the ordinary sense. It refers to the degree of dilution and succussion (serial shaking) a preparation has undergone. A 6C and a 200C both begin from the same plant material but arrive at very different preparations, and the clinical reasoning that selects between them is what this guide addresses.

Because Aconitum napellus is used in situations that are often acute and sometimes urgent, potency choices tend to be made quickly. That speed is exactly where mistakes cluster. The glossary below names the recurring errors so they are easier to recognise before they are repeated.

Blue-violet hooded flowers of the aconite plant growing on a tall stem

Core terms: potency, scale, and dilution

Before the mistakes make sense, the vocabulary needs to be pinned down. The three terms below are the ones most often used loosely, and loose use is itself a source of error.

A potency is written as a number plus a scale letter, such as 6C, 30C, or 200CK. The number is the number of dilution steps, and the letter names the scale used. The two common scales are centesimal (C), where each step is a 1:100 dilution, and decimal (X or D), where each step is 1:10. A 6C and a 6X are therefore not interchangeable, even though the number matches.

Dilution is the ratio applied at each step, and succussion is the vigorous shaking applied between steps. Both are part of the preparation. When people talk about a remedy being 'stronger' at a higher number, they are using a shorthand that hides the fact that higher dilutions are typically described as acting on a different level rather than simply more forcefully.

Term	Short definition	Common confusion
Potency	A number plus scale letter describing the preparation's dilution history	Treated as a simple strength rating
Scale (C, X/D)	The dilution ratio per step: 1:100 for C, 1:10 for X	The number is read without the letter
Dilution	The ratio of substance to diluent at each step	Assumed to mean the final concentration only
Succussion	Vigorous shaking between dilution steps	Omitted from the description entirely
Low potency	Fewer dilution steps, e.g. 3X, 6C	Assumed to be weak or ineffective
High potency	Many dilution steps, e.g. 200C, 1M	Assumed to be simply stronger

Mistake glossary: errors in matching potency to the case

These are the errors that appear most often when potency is chosen. Each is defined briefly, with the reasoning that makes it a mistake.

Several of these overlap. A practitioner may escalate potency out of impatience and simultaneously ignore the case's intensity, which compounds the problem. The definitions are separated here for clarity, not because they occur in isolation.

Potency escalation by default: raising the number after a single disappointing response, without asking whether the remedy, the repetition, or the case assessment was the actual problem.
Treating number as strength: assuming 200C is simply 'more' than 30C rather than a different preparation with a different expected action.
Ignoring the acute/chronic distinction: applying chronic-case potency habits to a sudden onset presentation, or the reverse.
Scale substitution: reading '30' as 30C when the prescription said 30X, or swapping scales because the number looked equivalent.
Dose-repetition confusion: changing potency when the real issue was how often the remedy was repeated.
Matching potency to symptom severity alone: using the loudness of the presentation as the only guide, while overlooking the person's overall state.
Copying a potency from a case report: reproducing a number from a published or secondhand case without checking whether the situations correspond.

Mistake glossary: errors in sourcing, storage and record-keeping

A potency can be selected correctly and still fail because of what happens to the preparation afterwards. These errors are administrative rather than clinical, which is why they are easy to overlook.

Record-keeping deserves particular attention because it compounds. If the potency, scale, and date of a previous dose are not written down, the next decision is made on memory, and memory is unreliable across weeks or months.

Unverified source: obtaining a preparation without confirming the manufacturer's stated scale and potency on the label.
Label drift: transferring a remedy to an unlabelled or mislabelled container, losing the scale letter in the process.
Storage neglect: keeping preparations where heat, light, or strong odours can affect them, contrary to the supplier's instructions.
Incomplete notes: recording 'aconite 30' without the scale, the date, or the reason the potency was chosen.
Mixing batches: combining or topping up containers so the actual dilution history becomes unknown.
Assuming a previous bottle is still what it was: using an old preparation whose label has faded or whose contents may have been replaced.

What reliable potency selection actually depends on

The errors above share a common root: potency is being treated as a standalone variable. In practice it is one of several linked decisions, and it cannot be judged well in isolation from the others.

The first dependency is the case assessment itself. The intensity, speed of onset, and overall pattern of the presentation inform whether a lower or higher dilution is being considered. The second is the remedy's own traditional profile, which describes the situations in which Aconitum napellus is considered indicated. The third is practical: what preparations are actually available, verified, and properly stored.

The fourth dependency is follow-up. A potency choice is provisional until there is a response to observe. Without a written record of what was given, when, and in what potency, there is nothing to compare against, and the next decision is guesswork dressed as experience.

Small glass remedy bottles with handwritten labels arranged on a plain surface

How to avoid the most consequential mistakes

The practical takeaway is not a rule about which number to use. It is a set of habits that make the errors above harder to commit.

Write the scale letter every time, without exception. Treat 30C and 30X as unrelated entries. Record the date and the reason for the choice alongside the potency, so a later review has something to work from. Verify the label at the point of use rather than trusting a memory of the purchase.

Above all, resist changing potency as a first response to an unsatisfactory outcome. The more common culprits are an incorrect remedy, an unsuitable repetition schedule, or a case assessment that needs revisiting. Changing the number is the easiest action and often the least informative one.

Mistake	Better habit
Raising potency after one poor response	Review remedy, repetition, and case assessment first
Writing 'aconite 30'	Write the full potency with scale, e.g. 30C
Trusting memory of a previous purchase	Read the label at the point of use
Copying a potency from a case report	Check whether the situations genuinely correspond
Changing potency when repetition was the issue	Adjust the schedule before the strength

When to involve a qualified practitioner

Potency selection sits inside a broader clinical decision that includes remedy choice, repetition, and ongoing assessment. That decision-making is the domain of trained homeopathic practitioners, and it is not something a glossary can substitute for.

If a presentation is severe, worsening, or unclear in origin, the appropriate step is to seek qualified medical assessment rather than to adjust a potency. Homeopathic preparations are not a substitute for that assessment, and no guide of this kind can tell an individual reader which potency suits their particular situation.

The value of understanding these terms and mistakes is that it makes conversations with a practitioner more precise. Being able to say which scale and potency were used, when, and with what result is useful information. It is not a licence to self-prescribe, and it should not be treated as one.