Silverlab is the #1 selling
ionic⁺ Colloidal Silver brand
in South Africa.

As proud members of the Health Products Association (HPASA)
we prioritise user safety and product quality.

HPA - Membership Certificate 2023 - Silverlab Healthcare-pdf


“Silverlab improves people’s daily health through offering safe, natural, efficacious, and cost-effective remedies that fight germs and combats inflammation.  The product range is both preventative and therapeutic.”

Pharmacy Grading Certificate

Silverlab Healthcare has met the stringent regular inspections of the SA Pharmacy Council (SAPC). This means all Silverlab products are manufactured in a category “A” Laboratory that is registered with the SAPC.

2022 Grade A Pharmacy cert 9 June 2022

Silverlab is proudly registered with U.S FDA (Food and Drug Administration).

This certificate confirms that Silverlab Healthcare is registered with the U.S. Food & Drug Administration pursuant to The  Public Health Security & Bioterrorism Preparedness & Response Act of 2002.

Silverlab is proudly registered with U.S FDA (Food and Drug Administration).


This certificate confirms that Silverlab Healthcare is licensed to manufacure medical devices in terms of section 22C(1)(b) of the Medicens and Related Sustances Act, 1965, to act as manufacturer, distributor, importer and exporter.

Silverlab is proudly registered with U.S FDA (Food and Drug Administration).

About Silverlab – How it All Started

An interview between Silverlab’s CEO, Ian McQueen, and Dr Ivan Jardine:

1. What led you to look at Colloidal Silver Ian?

Wendy, my wife, and I have always been interested in natural healthcare and old-fashioned remedies. In 2000, a brother-in-law, Errol, got oesophageal cancer. This led us to search on the internet for natural and alternative therapies. This is when we first came across colloidal silver.

2. What is your background?

I have an engineering background. I worked at Schonland research centre, which was classified at the time as a CSIR centre of excellence. We worked with doctors and professors, designing and building equipment for them to verify their research. The research faculty had a state-of-the-art fully equipped engineering workshop at my disposal. I headed up the team that designed and built this equipment.

3. Are there different types and qualities of colloidal silver? What is Colloidal Silver? Nano or sub-Nano Silver, and What is Electrically Isolated Nano Silver?
  • The first type of silver is nano silver that is chemically produced.
  • The second type of silver is also known as nano silver, but is electrochemically produced.
  • Then you get standard colloidal silver.
  • Another type is ionic silver.
  • Most are made low-voltage while some are high-voltage sputtering.
  • the oldest form of colloidal silver is a strong silver compound suspended in a gelatinous protein.
4. Which form of silver does Silverlab manufacture?

All scientific evidence points to the fact that positively charged silver ions are the most efficacious. These is some science showing that nano silver, having a negative zeta charge, also has some benefit.

Because of my engineering and scientific background, I was able to choose which way I wanted to go. I have capacity to manufacture any of the above. We chose to produce ionic silver in combination with a small amount of nano silver.

Our 18 ppm ionic colloidal silver has 5 million billion particles per drop (0, 05 ml).
The surface area of this one drop is the size of half a rugby field 54 m x 54 m.

The full name of our product is electrically isolated ionic silver nanoparticles.

5. If Colloidal Silver is such a great product, why don’t the big well-known pharmaceutical companies manufacture it?

Normal colloidal silver cannot be patented so the barrier to entry is fairly low. The big companies don’t see large revenue from this.

6. I have seen several official-looking websites that say colloidal silver does not work. What made some in the Health Industry say there is no scientific evidence that Silver works?

There are two specific websites that I can refer to, one is called African horse sickness and the other one Web MD. Both these websites make a mockery of colloidal silver without any evidence. They say there is no evidence that silver works. So Silverlab made a decision in 2002 to mainly use our own research. This research is done in externally audited independent laboratories.

7. Are there any studies done with regards to the toxicity of Colloidal Silver?

Yes, the following tests have been performed:

Year Type
2008 Acute toxicity
2008 30-day toxicity
2008 90-day toxicity
2019 Acute oral toxicity at a strength of 450 ppm
2020 Intravenous toxicity at a strength of 450 ppm
2020 Topical and eye sensitivity at a strength of 450 ppm
2020 Inhalation toxicity at a strength of 450 ppm

Our testing in terms of safety and efficacy is ongoing.

There is a common term that arises and it is the term “heavy metal”. John H Duffus from applied chemistry says “heavy metal is a meaningless term”. A heavy metal is a member of an ill-defined subset of elements.

Therefore, bismuth is a transition element and is nontoxic. Beryllium is a light metal and is highly toxic.

The term we should be looking at is toxic metals. Looking at any chemical handbook or even Wikipedia, silver is blatantly missing from the group mercury, lead, arsenic and cadmium which are all highly toxic.

8. Are there any studies done with regards to the efficacy of Colloidal Silver?

Yes, studies indicate efficacy against Pseudomonas Aeruginosa, Staphylococcus Aureus, Streptococcus and Candida Albicans. There are also studies indicating the anti-inflammatory properties of ionic colloidal silver.


9. What are the typical Applications of Colloidal silver in the Health Industry?

For skin conditions such as dermatitis, eczema and acne.  It is also indicated for gastrointestinal conditions such as food poisoning, gastritis, vomiting and diarrhoea. Other indications include nasal congestion, ear conditions and eye conditions. It is regarded as a natural anti-inflammatory and antimicrobial agent. Many people use as a tonic it for daily immune support.


10. What would you say are the top 3 conditions your colloidal silver helps to manage?
  1. Gastrointestinal conditions
  2. Topical skin conditions
  3. Respiratory conditions


11. What do you keep in your own medicine cupboard at home?

I keep the full range of Silverlab products, namely:

  • Daily Immune Booster & Anti-microbial Liquid
  • Healing Liqui-Gel
  • Healing Spray
  • Hand, Face & Mask Sanitiser Spray
  • Nasal Spray
  • Ear Rescue
  • Healing Gel
  • Healing Cream
  • ioNano 46 Nebulising Liquid

I also keep zeolite, probiotics, selenium, zinc, vitamin D3, vitamin C and plasters.

12. Are there any dangers to using your silver-based products, and can you overdose on it? How much is dangerous?

If you compare Silverlab colloidal silver to your common over-the-counter medication, the answer is no, it is not considered dangerous and you cannot overdose. You could drink several bottles of Silverlab colloidal silver and it would not pose a danger. If, however your child found a bottle of painkillers or bottle of anti-inflammatories or bottle of antihistamines you are probably ending up needing urgent medical care.

How much is dangerous?

At 18 ppm one would need to ingest more than 555 L to reach the halfway mark of the skin condition argyria. Both the World Health Organisation and the EPA suggest a lifetime maximum of eight grains or 10 g of silver per lifetime, which equates to 8 L of 18 ppm SilverLab ionic colloidal silver per annum.

13. What would have to happen to get more doctors to use it?

Education, education, education!

It’s all about awareness. When doctors learn more about this wonderful product, they will be converted.

14. Why don’t more families use it?

Again, the answer here is awareness.  Being a small business is always the balancing act of marketing and research & development. We have a great team and we are dispelling ignorance.

15. What is the future potential of Colloidal Silver and Silverlab?

Our products have a very favourable safety profile.  They are also very cost effective to manufacture.  In the current economic climate, the majority of South Africans cannot afford medical aid cover and they no longer rely on clinics and hospitals for assistance.  Many people are taking their health into their own hands. Colloidal silver therefore has the potential to become a trusted household product. Silverlab is committed to conducting ongoing research and education, thereby maintaining the status of the leading manufactured of ionic colloidal silver in South Africa.  We are excited about the future!