Colloidal silver has been around a long time and has interesting aspects, such as turning the skin permanently silver-grey.
Here are parts of text from the long-respected Mayo Clinic about use of colloidal silver; see their website for more details.
"Colloidal silver isn't considered safe or effective for any of the health claims manufacturers make. Silver has no known purpose in the body. Nor is it an essential mineral, as some sellers of silver products claim.
"Colloidal silver products are made of tiny silver particles suspended in a liquid — the same type of precious metal used in jewelry, dental fillings, silverware and other consumer goods.
"Colloidal silver products are usually marketed as dietary supplements that are taken by mouth. Colloidal silver products also come in forms to be injected or applied to the skin.
"Manufacturers of colloidal silver products often claim that they are cure–alls, boosting your immune system, fighting bacteria and viruses, and treating cancer, HIV/AIDS, shingles, herpes, eye ailments and prostatitis.
"However, no sound scientific studies to evaluate these health claims have been published in reputable medical journals. In fact, the Food and Drug Administration has taken action against some manufacturers of colloidal silver products for making unproven health claims.
"It's not clear how much colloidal silver may be harmful, but it can build up in your body's tissues over months or years. Most commonly, this results in argyria (ahr–JIR–e–uh), a blue-gray discoloration of your skin, eyes, internal organs, nails and gums. While argyria doesn't pose a serious health problem, it can be a cosmetic concern because it doesn't go away when you stop taking silver products.
"Rarely, excessive doses of colloidal silver can cause possibly irreversible serious health problems, including kidney damage and neurological problems such as seizures. Colloidal silver products may also interact with medications, including penicillamine (Cuprimine, Depen), quinolone antibiotics, tetracycline and thyroxine (Levothroid, Levoxyl, Synthroid) medications."
Bottom line: I wouldn't take it.
Thank you for posting this Jackie.
We are all familiar with controversies, gaps, cracks, inefficiencies,
mistakes, "deliberate" ignorance, botched/ biased scientific studies and (mis)information based on pseudoscience in the medical/pharmaceutical industry.
So, I'm not totally surprised with the information on Colloidal Silver, supplied by the Mayo Clinic website.
Some key points to note:
1.Environmental Protection Agency (EPA) recommends that the silver level in drinking water not exceed 50 ppb, drinking water supplies.
--Trace Minerals Colloidal Silver 30 ppm
Suggested Use: Adults take 1 teaspoon three times daily for one week, then ½ teaspoon three times daily until desired results are attained. Children under age 12 take ½ teaspoon three times daily for one week, then ¼ teaspoon three times daily until desired results are attained. Do not exceed the recommended daily serving without consulting your health care provider.
You could be ingesting greater quantities of colloidal silver than this from your drinking water supply!
I haven;t been able to find any documented cases of argyria
(the turning of the skin permanently silver-grey) from the ingestion of low concentration colloidal silver.
Many medical authorities are basing their conclusions on isolated cases like the one appearing in the Dermatology Online Journal article titled:
---Systemic argyria associated with ingestion of colloidal silver---
One 38 year old man, developed argyria after having ingested approximately 16 ounces (~ 450 ml) of 450 ppm colloidal silver three times a day for 10 months !!!
Just do a search under the above title for the complete article.
Please note that the dose taken by this patient was 90x the volume and 15x the concentration (week 1) and 30x the concentration ( week 2) of the recommended dosage!
If this is not an insult to our intelligence, what is?
Why does it even appear in a peer reviewed medical journal?????
It would be safe to assume that the quantity ingested, cannot be greater than the quantity the body is able to process and eventually eliminate
at any given time
And since there are no strict toxic levels established, , "Evaluating Colloidal Silver, Based on EPA Guidelines" is one of the few acceptable online sources, that we may use as a guideline for safe use of Colloidal Silver.
Also search under:"Nanosilver Non-Toxic in New Human Clinical Study
I can supply anyone interested with numerous links to studies and reports on CS efficacy.
Just let me know. Battery running low!
"Many medical authorities are basing their conclusions on isolated cases like the one appearing in the Dermatology Online Journal article titled:
---Systemic argyria associated with ingestion of colloidal silver---"
I would rather have the issue flagged early on than wait until many people try such a risky intake. "Isolated cases" caused by human stupidity need to be flagged early.
You say: "Please note that the dose taken by this patient was 90x the volume and 15x the concentration (week 1) and 30x the concentration ( week 2) of the recommended dosage! If this is not an insult to our intelligence, what is?"
I do not see this as an insult to anyone's intellgence: it is instead a warning to medical personnel to be on the look out for patients who do such stupid things.
"Why does it even appear in a peer reviewed medical journal????? "
So that medical personnel are aware that some people do such things and then show up in the emergency room.
"Environmental Protection Agency (EPA) recommends that the silver level in drinking water not exceed 50 ppb, drinking water supplies.
--Trace Minerals Colloidal Silver 30 ppm"
The difference between 50 parts per BILLION and 30 parts per MILLION is quite significant. I think you'd have great trouble getting a measurable amount from your drinking water (and we would all be setting up little distilleries and other chemical apparatus to collect the silver) ;-) Furthermore, if the amounts were comparable we would all be seeing any potential benefits from it without having to buy it as a supplement!
I have been noting the purported benefits of colloidal silver when I come across them, but it seems to me that when I see information on it, it's mostly marketing and advertising. I haven't really come across any actual studies showing statistically significant benefit.
You are so right, I also wondered at first-not realizing it was ppm in the drinking water instead of ppb.
Nonetheless, in order to hopefully help clarify this somewhat, here's an excerpt from the report:
--Evaluating Colloidal Silver, Based on EPA Guidelines--
Here is a summary of reference points to work from:
1. One tsp.contains 5ml of liquid.
2. One ppm concentration is the same as 1 milligram (mg.) per liter. (That is, 0.001mg/ml, which is the same as 1.0 microgram/ml. Therefore, 10 ppm equals 10mcg/ml.)
Example: 10 ppm colloidal silver contains 10mg of silver in one liter of liquid.
Example: One tsp. of 10 ppm colloidal silver contains 50 micrograms of silver (That is, 0.050mg.)
3. The EPA reference dose for a 160 pound adult (the average amount consumed per day in food and water): 364 micrograms per day.
4. The EPA critical dose for a 160 pound adult (the amount that should not be exceeded in daily consumption): 1.09 milligrams per day.
5. The EPA proposed limit for silver in drinking water is: 0.1mg per liter (0.1ppm)
6. The average person consumes approximately 90mcg of silver per day in their food.
7. The estimated dosage of silver required to trigger an anti-infective response (based on anecdotal reports and other data) is believed to be approximately 1milligram of silver.
8. References (8) and (70) state that the estimated total dosage of silver required to treat serious infections such as LYME disease is: approximately 18 to 90 milligrams of silver over the period of one month.
9. The estimated accumulated dosage required to produce argyria is: approximately 1 to 6 grams grams of silver, depending on the reference cited. Some references state as high as 50 grams. (1)(62)"
For more details & references please search under the title of the report.
My apologies for any confusion I might have caused.