Purification
Traditional methods use preparatory treatments intended to process the starting material.
Gold in Medicine: From Ancient Remedies to Modern Nanomedicine
An extraordinary journey from alchemy and ancient remedies to modern medical discovery.
For thousands of years, gold has represented something more than wealth. Ancient healers worked it into elaborate preparations. Alchemists searched for the secret of drinkable gold. Physicians later used gold compounds to treat disease. Today, scientists are exploring its remarkable properties at the nanoscale. Discover how one extraordinary element became part of medicine's evolving story.
Ancient Gold
Elixirs & Traditions
Alchemy
Faraday & Discovery
Medicine
Gold Salts & Treatments
Nanoscience
Modern Research
Why Has Gold Fascinated Healers for Centuries?
Imagine an alchemist standing over a glowing furnace, searching for a way to turn the world's most precious metal into an elixir of life.
Centuries later, a scientist watches a solution of gold turn a remarkable ruby red. In another laboratory, physicians begin investigating gold compounds as medicines.
Today, researchers work with gold structures measured in billionths of a metre, exploring applications that would have been unimaginable to those early experimenters.
These moments belong to different periods of history, yet they share one extraordinary element.
The story of gold in medicine is not simply one of ancient remedies becoming modern treatments. It is a story of changing ideas, unexpected discoveries and increasingly precise science.
Five Chapters in the History of Gold in Medicine
From mysterious golden elixirs to the frontiers of nanotechnology, follow the discoveries that transformed our understanding of this extraordinary metal.
The Dream of Drinkable Gold
Long before scientists could observe nanoparticles, healers and alchemists were asking a remarkable question: could the world's most treasured metal also become a medicine?
Gold seemed almost unlike any other material. It resisted corrosion, retained its brilliant colour and could survive centuries without losing its distinctive appearance.
In cultures where precious metals carried spiritual, royal and symbolic significance, it is perhaps unsurprising that gold also acquired a medical reputation.
Yet the history is more complicated than stories of ancient miracle cures suggest. Historical accounts often mix ritual, symbolism, metallurgy and attempts at healing.
To understand gold in medicine, we need to examine not only what people believed, but what they actually prepared.
Swarna Bhasma: Gold Transformed by Fire
One of the most distinctive traditional gold preparations comes from Ayurveda, where Swarna Bhasma, also written Suvarna Bhasma, is produced through elaborate processing methods.
Rather than simply grinding a piece of gold into powder, traditional preparation can involve repeated purification, grinding, heating and incineration stages.
These processes belong to Rasa Shastra, a branch of traditional Ayurvedic practice concerned with processed minerals and metals.
Grinding & Processing
Gold is worked through repeated processing steps, sometimes alongside other traditional materials.
Controlled Heating
Repeated heating and incineration help produce the finished traditional preparation.
Aurum Potabile: The Search for Liquid Gold
Picture a Renaissance laboratory: glass vessels catching the firelight, strange mixtures simmering over a furnace and an alchemist studying the transformation of metals.
Among the many ambitions of European alchemy was the creation of aurum potabile, Latin for drinkable gold.
The underlying idea was captivating. If gold could be transformed into a drinkable preparation, perhaps its valued qualities could be incorporated into medicine.
There was, however, a problem: gold is not easily dissolved or transformed using ordinary substances.
Alchemists therefore developed different recipes involving chemical treatments, solvents, precipitates and finely divided materials.
Some historical preparations may have contained dissolved gold compounds. Others could have contained fine gold particles or complex mixtures whose exact composition was uncertain.
Aurum potabile was not one universal medicine. It was a name applied to a diverse family of preparations.
Modern investigations of selected historical recipes have suggested that certain alchemical procedures could generate nanoscale gold.
That creates an intriguing connection between early experimental chemistry and modern nanoscience. But it does not establish that those preparations were safe or effective treatments.
When Gold Changed Colour
For centuries, alchemists had dreamed of transforming gold. But one of its most remarkable transformations required neither magic nor the creation of a new element.
It required a new way of looking at matter.
As experimental chemistry developed, scientists began replacing speculative theories with observations that could be repeated, measured and investigated.
The change was gradual. Alchemy had already contributed techniques such as distillation, filtration, dissolution, precipitation and crystallisation.
But modern chemistry introduced a crucial distinction: changing the form of a material is not the same as changing one chemical element into another.
The Scientist Who Revealed Ruby-Red Gold
Imagine holding a small glass vessel containing a brilliantly coloured ruby-red liquid.
It might look like a dye or an exotic chemical. Yet the colour could come from something far more surprising: extremely fine particles of metallic gold suspended in liquid.
Gold Was Still Gold. Its Appearance Had Changed.
In 1857, Michael Faraday published important observations on the interaction of light with finely divided gold.
His experiments showed that gold could display striking optical properties when present as extremely small particles.
Rather than behaving visually like a polished gold coin or a solid gold bar, finely dispersed gold could produce vivid red and other colours.
Faraday did not have modern electron microscopes or today's understanding of nanotechnology.
Nevertheless, his work helped establish a scientific foundation for studying how particle size and physical form affect the behaviour of materials.
What looked like a transformation of gold was actually a revelation of its physical properties.
Why Can Tiny Gold Particles Look Red or Purple?
The answer lies in the interaction between light and electrons within nanoscale gold.
Modern scientists describe an important part of this behaviour using localized surface plasmon resonance (LSPR).
In simple terms, light can cause electrons in certain metallic nanoparticles to oscillate collectively, affecting which wavelengths of light are absorbed and scattered.
Particle Size
The size of gold particles can influence how they interact with light and the colour observed.
Shape & Structure
Spherical particles, rods and other nanostructures can have different optical responses.
Surrounding Environment
Particle concentration, aggregation and the surrounding medium can also affect optical behaviour.
Discover more about colloidal gold, nanoparticle properties and the science behind them.
The Gold That Became a Drug
For centuries, people had searched for ways to make gold medicinally useful. In the twentieth century, gold finally became part of established pharmaceutical treatment.
But the breakthrough did not begin where you might expect.
It began with a disease that gold compounds ultimately failed to treat convincingly: tuberculosis.
What followed was one of the more unexpected chapters in medical history, connecting an abandoned theory of infection with the treatment of inflammatory arthritis.
This was no longer the world of mysterious golden elixirs. Physicians were now testing specific chemical compounds, measuring outcomes and confronting the risks of treatment.
From Tuberculosis to Rheumatoid Arthritis
Gold's route into twentieth-century medicine was shaped by laboratory observations, mistaken assumptions and eventually controlled clinical investigation.
A New Possibility
Laboratory findings encouraged researchers to investigate certain gold compounds against tuberculosis.
The Tuberculosis Detour
Gold treatments were tried clinically, but evidence of benefit proved unconvincing and toxicity became a serious concern.
A Different Disease
Gold compounds became established disease-modifying treatments for rheumatoid arthritis.
Newer Medicines Emerge
Safety concerns, monitoring demands and newer treatments gradually reduced the routine use of gold therapy.
When Gold Entered the Doctor's Toolkit
The medical use of gold compounds became known as chrysotherapy, a term derived from the Greek word for gold.
Pharmaceutical gold compounds were used to treat rheumatoid arthritis, a chronic inflammatory disease affecting the joints.
Unlike ordinary pain-relieving medicines, these treatments belonged to the category of disease-modifying antirheumatic drugs, or DMARDs.
The Promise — and the Problem
Injectable gold compounds, including gold sodium thiomalate, became established treatment options for rheumatoid arthritis.
Controlled clinical trials demonstrated that certain gold treatments could improve disease outcomes.
Later, the oral gold-containing drug auranofin offered another pharmaceutical approach.
Yet gold therapy came with important limitations.
Adverse effects could involve the skin, kidneys, blood and other organ systems. Patients required medical monitoring, and some discontinued treatment because of toxicity.
As newer disease-modifying therapies became available, gold compounds were increasingly displaced from routine rheumatoid arthritis treatment.
Gold had demonstrated genuine pharmaceutical activity, but its usefulness depended on the precise drug, its dose, its effects and its risks.
Gold Medicines and Colloidal Gold Are Not the Same
Two preparations may both contain gold, yet behave very differently inside the body.
Chemistry, particle characteristics, formulation, dose and administration route all matter.
Gold Salts & Auranofin
These are defined chemical compounds developed and administered as pharmaceutical treatments.
Their biological activity depends on molecular chemistry, including oxidation state, ligand structure and metabolism.
Evidence: Established clinical history in rheumatoid arthritis, alongside significant safety limitations.
Metallic Gold Dispersions
Colloidal gold generally refers to finely divided metallic gold dispersed within a liquid.
Its properties depend on particle size, shape, surface chemistry, concentration and formulation.
Evidence: Extensive materials research exists, but pharmaceutical gold-salt findings cannot simply be transferred to consumer colloidal gold.
The Nanotechnology Revolution
For thousands of years, gold was valued for what people could see: its brilliance, rarity and resistance to corrosion.
Modern science revealed something far less obvious.
When gold is engineered into structures just billionths of a metre across, its optical, chemical and physical behaviour can differ dramatically from that of bulk gold.
Scientists began exploring these properties for applications that earlier generations could scarcely have imagined.
Gold was no longer simply a precious metal or an ingredient in pharmaceutical compounds. It had become a remarkably versatile material for nanoscale engineering.
How Small Are Gold Nanoparticles?
A nanometre is one billionth of a metre. Gold nanoparticles are commonly engineered at dimensions measured in tens of nanometres, although their sizes vary considerably between applications.
At this scale, the relationship between surface area and volume changes dramatically, while the interaction between light and metallic electrons creates unusual optical properties.
Optical Properties
Gold nanoparticles can absorb and scatter light in distinctive ways, making them useful in optical research and sensing.
Surface Engineering
Researchers can modify nanoparticle surfaces with selected molecules to investigate targeting, stability and interactions with biological systems.
Structural Versatility
Gold can be engineered into spheres, rods, shells and other nanostructures, each offering different material properties.
How Are Gold Nanoparticles Being Studied in Medicine?
Modern nanomedicine explores ways to exploit the distinctive properties of engineered gold nanostructures.
Some applications already contribute to established diagnostic technologies. Others remain experimental and require further investigation before clinical use.
Medical Diagnostics
Gold nanoparticles can provide visible or measurable signals in certain diagnostic assays.
Their optical properties have made them useful in technologies including some lateral-flow tests.
Imaging & Detection
Researchers investigate gold nanostructures as contrast-enhancing materials in experimental imaging.
Their interactions with light and X-rays create opportunities for new approaches to visualising biological tissues.
Drug Delivery Research
Gold nanoparticle surfaces can be engineered to carry or associate with therapeutic molecules.
Researchers are investigating whether these systems can improve the delivery or controlled release of certain medicines.
Experimental Cancer Treatments
Some gold nanostructures are being investigated for their ability to convert absorbed light into heat.
This principle underlies experimental photothermal approaches intended to target tumour tissue. Clinical research remains specific to the engineered treatment being tested.
From Promising Discoveries to Real-World Medicine
Laboratory results can be remarkable, but turning an experimental nanotechnology into a medical treatment is a much longer journey.
Researchers must investigate how particles behave in biological environments, where they travel, how they are cleared and whether they produce unwanted effects.
Explore the science of gold nanoparticles and the distinction between engineered nanotechnology and colloidal gold dispersions.
Colloidal Gold Dosage, PPM and Concentration
What does 60ppm mean in colloidal gold? And how does concentration relate to the amount of gold in a liquid?
Understanding these measurements is useful when comparing colloidal gold preparations, but concentration alone does not establish quality, effectiveness or an appropriate dosage.
What Does 60ppm Mean in Colloidal Gold?
PPM stands for parts per million. For dilute water-based colloidal gold dispersions, a concentration of 60ppm is commonly expressed as approximately 60 milligrams of gold per litre of liquid.
This is equivalent to approximately 0.06 milligrams of gold per millilitre.
PPM describes concentration. It does not tell you how large the gold particles are, whether the dispersion is stable or how the particles were produced.
Comparing Colloidal Gold Concentrations
These examples show the approximate mass of gold per litre in dilute water-based preparations. They illustrate concentration only, not product effectiveness.
Approximately 0.01 mg of gold per millilitre.
Approximately 0.03 mg of gold per millilitre.
Approximately 0.06 mg of gold per millilitre.
Choosing Colloidal Gold: Look Beyond the PPM
Concentration is one useful measurement, but it should be considered alongside manufacturing methods, ingredient transparency and available quality information.
Explore the Gold Healing colloidal gold collection to learn more about our available preparations.
Colloidal Gold Shelf Life & Storage
How long does colloidal gold last? Does colloidal gold expire, and what is the best way to store it?
The stability of a colloidal gold dispersion depends on its formulation, particle characteristics, packaging and storage conditions. Proper handling helps reduce avoidable changes over time.
How to Store Colloidal Gold
Follow the storage instructions provided for your specific product. These general principles can help protect a dispersion from unnecessary environmental exposure.
LIGHT EXPOSURE
Avoid Prolonged Direct Sunlight
Keep the container away from prolonged direct sunlight and excessive heat. Light sensitivity varies between formulations, so follow the manufacturer's storage guidance.
TEMPERATURE
Maintain Suitable Temperatures
Avoid exposing the product to extreme temperatures or repeated temperature fluctuations. Do not freeze or refrigerate unless the product instructions specifically recommend it.
CONTAMINATION
Keep the Container Securely Closed
Close the bottle promptly after use and avoid introducing foreign substances. Contamination can change the liquid's composition and potentially affect dispersion stability.
PACKAGING
Retain the Original Packaging
Store colloidal gold in its original, properly sealed container where possible. Packaging compatibility and protection from contamination are important considerations.
Why Can Colloidal Gold Change Over Time?
Colloidal gold consists of small gold particles dispersed in a surrounding liquid. A stable dispersion resists unwanted aggregation and other changes during storage.
Stability depends on the characteristics of the particles and their interaction with the surrounding medium. Dissolved substances, changes in pH and contamination can influence those interactions.
Individual particles may cluster together, changing the effective particle size distribution.
Particle charge and surface interactions influence whether a dispersion remains stable.
Temperature, contamination and the surrounding liquid can influence how particles behave over time.
Colloidal Gold Storage Questions
Does Colloidal Gold Expire?
Colloidal gold products may have a stated expiry or best-before date based on the manufacturer's formulation and quality information. There is no single shelf life that applies to every colloidal gold dispersion. Follow the date and instructions on the individual product.
Should Colloidal Gold Be Refrigerated?
Refrigeration is not a universal requirement for colloidal gold. Appropriate temperatures depend on the specific formulation. Follow the manufacturer's recommendations rather than assuming colder storage is always preferable.
What If Colloidal Gold Changes Colour?
The appearance of colloidal gold can be influenced by particle size, shape, concentration and aggregation. An unexpected colour change, cloudiness or visible sediment should be treated as a reason to stop using the product and contact its manufacturer for guidance.
Protecting the Quality of Colloidal Gold
Good storage practices help reduce avoidable changes, but they cannot guarantee indefinite stability. Always follow the storage instructions and expiry information supplied with your particular product.
To explore Gold Healing's available colloidal gold preparations, visit our colloidal gold collection .
What Does the Future Hold?
From ancient golden preparations to laboratory-engineered nanoparticles, the medical story of gold has changed repeatedly.
Today, researchers are exploring whether gold's distinctive physical and chemical properties can contribute to more precise diagnostics, imaging systems and new therapeutic approaches.
Yet the future of gold in medicine is not about returning to the idea of a universal golden cure.
It is about designing specific materials for specific medical purposes, then testing them carefully.
Precision Diagnostics
Researchers continue developing gold-based sensors and diagnostic platforms designed to detect biological signals with greater sensitivity.
Targeted Therapeutics
Experimental nanomaterials are being investigated as potential delivery systems and components of precisely controlled treatment methods.
New Imaging Technologies
Gold nanostructures may offer new opportunities for imaging and sensing, although each application must demonstrate clinical usefulness and safety.
Could Gold Nanotechnology Help Us Study the Brain?
The human brain presents extraordinary challenges for medical research.
Its complex neural networks, sensitive tissues and protective blood-brain barrier make the development of new diagnostic and therapeutic technologies particularly demanding.
Scientists are investigating a range of engineered nanomaterials, including certain gold nanostructures, for applications involving neural imaging, biosensing and experimental delivery systems.
From Neural Signals to New Research Tools
Some experimental research explores how gold nanostructures interact with light, electrical environments and biological tissues.
Other studies investigate whether engineered particles could contribute to biosensors or methods for studying neural activity.
These possibilities are scientifically interesting because the brain depends on highly organised electrical and chemical signalling.
However, the existence of promising laboratory findings does not establish that gold nanoparticles can safely treat neurological diseases in people.
The challenge is to establish which engineered materials, if any, offer meaningful benefits without introducing unacceptable risks.
What Must Happen Before Research Becomes Treatment?
Developing a medical nanotechnology requires much more than showing an interesting effect in the laboratory.
Researchers must answer fundamental questions about manufacturing, biological behaviour, clinical effectiveness and long-term safety.
What Exactly Is the Material?
Particle size, shape, surface chemistry, purity and formulation must be measured and consistently controlled.
Where Does It Go?
Scientists need to understand distribution, metabolism, accumulation and clearance in biological systems.
What Are the Risks?
Researchers must evaluate toxicity, immune responses, interactions with tissues and possible long-term effects.
Does It Help Patients?
Carefully designed clinical studies must establish whether a proposed intervention is effective and sufficiently safe for its intended use.
The Story of Gold Is Still Being Written
Ancient healers saw gold as a symbol of vitality. Alchemists searched for the secrets of transformation. Early chemists discovered that finely divided gold could display extraordinary colours.
Pharmaceutical researchers later developed gold compounds that became established medicines for rheumatoid arthritis.
Today, scientists engineer gold nanostructures for research into diagnostics, imaging and experimental therapeutic systems.
These chapters are connected by a shared fascination with gold, but they represent different materials, technologies and levels of evidence.
Frequently Asked Questions
From ancient healing traditions to modern gold nanoparticles, here are answers to common questions about the medical uses of gold.
How is gold used in medicine today?
Gold has several distinct medical applications. Certain gold compounds have been used as prescription medicines for rheumatoid arthritis, while gold nanoparticles are used in some diagnostic technologies and investigated for imaging, drug delivery and experimental treatments. The evidence depends on the specific gold material and application.
Did ancient civilisations use gold for healing?
Yes. Gold appeared in several historical medical and alchemical traditions. Preparations associated with Ayurveda, including Swarna Bhasma, and European alchemical ideas such as aurum potabile reflect this history. However, traditional use does not establish modern clinical effectiveness or safety.
What did Michael Faraday discover about gold?
In the nineteenth century, Michael Faraday investigated finely divided gold and demonstrated striking optical properties associated with gold particles. His work helped establish an important foundation for the later scientific study of colloids and nanomaterials.
Why were gold salts used for rheumatoid arthritis?
Gold-containing medicines were developed and used to treat rheumatoid arthritis because of their effects on inflammatory and immune processes. These pharmaceutical gold compounds differ chemically from metallic gold nanoparticles and consumer colloidal gold products. Their use has declined as other treatments became available.
Are gold nanoparticles used in cancer treatment?
Researchers are investigating engineered gold nanoparticles and nanostructures for applications such as photothermal treatment, imaging and targeted delivery. Some approaches have reached clinical investigation, but research findings cannot be generalised to all gold nanoparticles or to consumer colloidal gold products.
Can gold nanoparticles cross the blood-brain barrier?
Research indicates that the behaviour of engineered gold nanoparticles depends on factors such as size, surface chemistry, formulation and the experimental model. Some experimental systems investigate transport across or interactions with the blood-brain barrier. This does not mean all gold nanoparticles cross it or that they treat neurological conditions.
Is colloidal gold the same as gold nanoparticles used in medicine?
Not necessarily. Colloidal gold broadly describes a dispersion containing fine gold particles, while medical research often uses highly characterised and specifically engineered gold nanomaterials. Their particle properties, purity, formulation and intended applications may differ substantially.
Read our guide to what colloidal gold is for a more detailed explanation.
Is gold safe for medical use?
Safety depends on the specific form of gold, its dose, route of administration and intended purpose. Approved medicines undergo regulatory assessment, while experimental nanomaterials require appropriate toxicological and clinical evaluation. Gold should not be assumed safe simply because it is a precious metal.
Not All Forms of Gold Are the Same
One of the most important lessons from the history of gold in medicine is that the word "gold" can refer to very different substances.
Swarna Bhasma
A traditional Ayurvedic preparation associated with processed gold.
Its composition can depend on preparation methods and should not be equated with modern pharmaceutical gold compounds or colloidal gold.
Aurum Potabile
The historical concept of "drinkable gold" found in European alchemical traditions.
Recipes and beliefs varied, and the term does not describe one standardised modern substance.
Gold Compounds
Chemically defined gold-containing medicines, including compounds historically used for rheumatoid arthritis.
Their pharmacology is different from that of metallic gold particles suspended in water.
Engineered Gold Nanoparticles
Precisely designed gold nanomaterials investigated for diagnostic, imaging and therapeutic applications.
Their behaviour depends on particle size, shape, surface chemistry and formulation.
Explore the Research
These historical and scientific sources provide further context for gold's role in chemistry, medicine and nanotechnology.
Michael Faraday — Experimental Relations of Gold (and Other Metals) to Light
Faraday's nineteenth-century research helped establish the scientific study of the optical behaviour of finely divided gold.
Read the historical paper ↗MedlinePlus — Auranofin
Information from the US National Library of Medicine about auranofin, a prescription gold-containing medicine used for rheumatoid arthritis.
Read the medicine information ↗National Library of Medicine — Gold Nanoparticles in Medicine
Explore indexed scientific publications discussing the use of gold nanoparticles in diagnostics, imaging, drug delivery and experimental therapeutics.
Explore scientific publications ↗ClinicalTrials.gov — Gold Nanoparticle Studies
Search registered clinical studies involving gold nanoparticles and related investigational technologies. Registration does not itself establish that a treatment is safe or effective.
Explore clinical studies ↗PubMed — Swarna Bhasma Research
Explore published investigations into the characterisation, composition and biological study of traditional Swarna Bhasma preparations.
Explore published research ↗Explore More About Gold & Nanoscience
Continue exploring the relationship between gold, particle science and modern research with these Gold Healing guides.
What Is Colloidal Gold?
Discover what colloidal gold is, how fine gold particles behave in liquid dispersions and why particle properties matter.
Read the Guide →Colloidal Gold Benefits
Explore the history, traditional associations and scientific questions surrounding colloidal gold.
Explore the Guide →Gold Nanoparticles Research
Learn more about the unusual properties of nanoscale gold and its importance in scientific research.
Explore the Research →
