Shelf Life of Colloidal Silver

What is the shelf life of colloidal silver?

How long will colloidal silver last if stored properly? What is the best way to store it? The shelf life of colloidal silver has been proven to last over 10 years when stored correctly! This is dependent on meeting the proper storage conditions. Mountain Well-Being Colloidal Silver comes with a guaranteed shelf life of three years.

What are the proper conditions to maximize shelf life of colloidal silver?

It’s simple, to correctly store colloidal silver to last as long as you need, there are three key factors to keep in mind.

  1. Store colloidal silver at room temperature. Extreme temperatures can shorten the shelf life.
  2. Keep colloidal silver out of direct light and store it in amber or cobalt colored glass containers. Plastic containers will definitely shorten the shelf life.
  3. Keep colloidal silver away from strong electromagnetic frequencies, such as appliances or computers. Each silver ion and particle have an electric charge that keeps them colloidal (or suspended) in the liquid. They can lose their charge more quickly when exposed to strong electromagnetic fields.

A kitchen cupboard or a bathroom medicine cabinet is an ideal spot to keep your bottle of colloidal silver. But honestly, I keep a bottle in my bathroom, kitchen, truck, next to my bed, and in my Camelbak for when I’m on the trail. As long as the conditions above are met, it really doesn’t matter where you keep it.

Where and how do you store your colloidal silver?

42 Responses to Shelf Life of Colloidal Silver

  1. Tascha July 26, 2017 at 5:56 pm #

    So… if I kept mine in the refrigerator the shelf life might be diminished? It was recommended to me to extend the shelf life…

    • Jonathan Glauser July 27, 2017 at 12:00 pm #

      Hello Tascha,
      For the longest possible shelf life (10 years+), it’s best to store colloids at room temperature. If you’ve put yours in the refrigerator for a short time, there should be no problem.
      Be well,

      • Maria Roque March 6, 2018 at 3:45 pm #

        My unopened bottle expired this January, can it still be used? It’s atill in original sealed box

        • Jonathan Glauser March 7, 2018 at 7:35 pm #

          Hi Maria,

          If stored properly, like the blog post details, then the bottle should still be good for many more years. Minimum should be a decade but potentially much longer than that.

          Be well,

      • Kristy Keller July 17, 2018 at 3:32 pm #

        Is it okay to store the colloidal silver in a brown plastic bottle or is plastic out altogether?

        • Jonathan Glauser July 18, 2018 at 10:04 pm #

          Hello Kristy,

          I always use glass bottles unless I’m traveling and need to put my CS in a non-breakable bottle to go in my luggage. When I use plastic, I choose PETE (#1 recycle number) plastic. Brown would be better than clear, but as long as you don’t store it in direct light, clear will be fine for short term use.
          Glass is always best for long term storage and shelf life, but plastic is ok for short term use (months instead of years).

          Be well,

  2. Frank September 13, 2017 at 4:23 pm #

    How about opened bottles? I use colloidal silver for sinus/cold issues. If the seal is broken and you don’t use all off the bottle. What is the shelf life then if it’s stored properly?

    • Jonathan Glauser September 13, 2017 at 8:58 pm #

      Hello Frank,
      As long as you pour out of the bottle and replace the cap immediately, the shelf life should be the same. Make sure you don’t touch your lips to the bottle, and no foreign contaminants get into the bottle. Are you using colloidal silver both internally and in the sinuses? That’s what I’d recommend for sinus issues. Our newest product, Sulfur Silver Sinus Spray, works great if you haven’t tried it yet. You can find it here:
      Be well,

      • Frank September 14, 2017 at 6:40 pm #

        I just use it internal but I will look into the spray. Thanks for your quick response. Take care

    • Michelle Yap November 9, 2017 at 3:05 am #

      Did you still consume it tho Tascha? it’s actually making me curious and I’ve read so many articles about storage but I haven’t encountered anything about it still being okay to drink

      • Jonathan Glauser November 14, 2017 at 2:41 pm #

        Colloidal silver, when made properly, is safe to drink.

  3. Peter Finlay October 4, 2017 at 10:55 am #

    How effective is colloidal silver as a mouth wash for mouth ulcers? How long should it take for the ulcer to go?

    • Jonathan Glauser October 9, 2017 at 3:58 pm #

      Hello Peter,
      We are not allowed to make any medical claims, but if it were me, I’d swish with colloidal silver at least several times per day. The longer you can swish with it in your mouth, the better.
      Be well,

  4. Daniel October 27, 2017 at 9:48 am #

    I stored a quart of colloidal silver just as you recommend, in amber glass, dark, room temp. As I am working my way down the bottle I noticed that the color appears to be yellower than at first. That is what started my query about shelf life. Do you have an information about that? Is that an indication of spoilage? What are the indications of spoilage?

    • Jonathan Glauser November 7, 2017 at 1:19 pm #

      Hi Daniel,
      We make our colloidal silver as strong as possible while still keeping the particle size as small as possible. Although our colloidal silver label says 15ppm, it’s actually produced closer to 20ppm. Sometimes when a bottle if halfway used up, some evaporation occurs which can cause the CS to get a little more concentrated. This can make the liquid turn slightly yellow instead of being completely clear. This is not too unusual and is not a sign that your CS has spoiled. A slight yellow color is acceptable, it just means that some more of the ions have been reduced into particles, giving the slight yellow/golden color. Another thing that can cause this is any contaminants getting into the bottle, so make sure to always pour out of the bottle (never put your lips to the bottle) and replace the cap immediately. If dust, backwash, or any other contaminant get in, then the color can change. If it’s a pale yellow, then be assured it is still safe to use. Spoilage is rare and would be seen as black sediment on the bottom of the bottle.
      Be well,

  5. Michelle Yap November 9, 2017 at 2:58 am #

    Is it safe to consume colloidal silver if it was placed in the refrigerator for a few hours, what if the particles are still intact? Is it safe to consume?

    • Jonathan Glauser November 14, 2017 at 12:16 pm #

      Hello Michelle,
      Yes, your colloidal silver is definitely safe to consume. Putting CS in the refrigerator won’t ruin it, but it will have a longer shelf life if you keep it at room temperature.
      Be well,

  6. Julia Pythe November 30, 2017 at 10:46 pm #

    If my silver changes odor and taste, almost indescribable, is it still safe to consume?

    • Jonathan Glauser December 4, 2017 at 3:17 pm #

      Hi Julie,
      Thanks for your question. Mountain Well-Being Colloidal Silver contains both silver particles and silver ions. Some people can detect a slightly metallic aftertaste (sometimes described as bitter) when they swallow colloidal silver, which is due to the silver ions. It is perfectly normal and actually desired. Sometimes the taste is more obvious than other times, depending on what was on the tastebuds prior to taking colloidal silver. It may taste strong one time and then have almost no taste the next.

      As for odor, colloidal silver is generally odorless. What exactly do you smell? It’s very important to keep all contaminants out of the bottle. Never put your lips directly on the bottle. If any backwash or other contaminant get into the bottle, it can react with the colloidal silver and change color, taste and possibly odor. I’ll wait to hear back from you.

      Thank you,

  7. Joe b January 10, 2018 at 10:24 am #

    It is cool to take CS along with other antibiotics, for example cipro tab.?

    • Jonathan Glauser January 22, 2018 at 11:04 am #

      Hello Joe,
      Yes, it is safe and advisable to take CS along with other antibiotics. There have been studies proving that taking CS with an antibiotic has a more beneficial effect than taking just the antibiotic alone.

      For the future, try to use CS at the very first symptom. That way, you may hopefully avoid the need of an antibiotic altogether.

      Be well,

  8. Rose January 16, 2018 at 3:53 pm #

    I’ve heard that this could cure toenail fungus. Do you know of any cases where it really worked for that? Also, I put mine in travel size spray bottles that are dark in color, because I travel a lot , but they are plastic. How long will it last if it is stored in plastic?

    • Jonathan Glauser January 22, 2018 at 11:50 am #

      Hello Rose,

      We cannot make any claims that colloidal silver “cures” anything. But from personal experience, I can tell you that I have had great results using CS on my toenail fungus. What I did was soak my entire toe under CS for at least 10 minutes at a time. I used a large shot glass, although this was not the easiest thing to do. Alternatively, you can use a spray bottle to spray under the nail while simultaneously lifting the nail from the toe. It took a good month to get the results I wanted.

      Plastic bottles are ok for short term use (weeks or months while traveling) but glass is best for long term (years). Clear plastic that has the #1 recycling on the bottom is better than opaque #2 plastic. Dark color is good.

      Be well,

  9. Leo Woods January 17, 2018 at 3:50 pm #

    You mention keeping the CS away from electromagnetic energy, but in today’s homes these sources are everywhere including wires in the walls, outlets, etc.. What type of distance are you talking about when you say keeping CS away from them? Thanks.

    • Jonathan Glauser January 22, 2018 at 11:59 am #

      Hello Leo,

      For optimum shelf life, the idea is to keep CS away from any strong electromagnetic fields, such as appliances, computers, routers, etc. Ideal storage locations include a bathroom medicine cabinet, kitchen pantry, bedroom closet, etc. It’s not a critical issue, but can make a difference for very long term storage.

      Be well,

  10. Irene Kummerer February 14, 2018 at 7:46 pm #


    Can you comment on colloidal copper’s shelf life?



    • Jonathan Glauser February 26, 2018 at 9:45 am #

      Hello Irene,

      Colloidal copper has a shorter shelf life than other colloids. But if you store it correctly, which means at room temperature, away from direct light and away from strong electro-magnetic frequencies, it should last a few years. It’s best to use it up within one year, and always shake the bottle before use. Normally, when used everyday, a bottle of colloidal copper will last from 1-3 months.

      Be well,

  11. SUNNY LEVIN February 16, 2018 at 7:43 pm #

    what colloidal silver to use internally? I have an internal burning.

    • Jonathan Glauser February 26, 2018 at 9:48 am #

      Hello Sunny,

      For internal use, you will always want to choose the liquid colloidal silver. The silver gel, lotion and soap are great for topical use.

      Be well,

  12. Max March 20, 2018 at 1:13 am #

    I have read elsewhere that colloidal silver made at home only lasts about two weeks before it loses its charge. Are you putting yours through some special process to maintain such a long shelf life?

    • Jonathan Glauser March 20, 2018 at 2:31 pm #

      Hello Max,

      When colloidal silver is made at home, it is often made using low technology and sometimes only with 9 volt batteries connected together. As a result, the colloidal silver can be of poor quality and not very stable. That’s why some people say colloidal silver only lasts for a few weeks.

      However, when colloidal silver is made with state-of-the-art equipment which ensures uniform and minute particles, then the solution can be stable for a very long time. That is the reason Mountain Well-Being colloidal silver is stable for over a decade when stored correctly.

      Be well,

  13. Julia May 11, 2018 at 12:19 am #

    Hello if yo see shimmery small particles in th CS is that spoiled? TIA

    • Jonathan Glauser May 14, 2018 at 2:22 pm #

      Hello Julia,

      Are you referring to homemade colloidal silver or another brand of CS? Because if you see shimmery particles in CS, then you have very, very large particles of silver. We have never produced a batch with particles that are even remotely close to being visible with the naked eye. I wouldn’t call it “spoiled” but rather very poor quality.


  14. Janet Slocum May 14, 2018 at 11:48 pm #

    My CS has been in the fridge for about a year now atleast. A friend of mine gave it to me and told me to keep it refrigerated. I have never used it cuz I have been very sceptic about it, but I have a pretty bad infection and I’ll try anything that might help at this point. I just don’t know if its bad or not now. Is it unsafe to use it??

    • Jonathan Glauser May 17, 2018 at 2:34 pm #

      Hello Janet,

      For the longest shelf life, you want to store colloidal silver at room temperature. But more than likely, the CS you’ve had in your fridge for a year is still fine. If you don’t see visible particles at the bottom of the container, it should be fine. If it’s Mountain Well-Being brand, then it certainly won’t be unsafe to use, even if stored in the fridge. Worst case scenario is that it may have lost a little bit of potency, but even that is unlikely after only one year in the fridge.

      Be well,

  15. Stacee Kersley July 9, 2018 at 7:25 pm #

    I had ordered CS and the mailman jammed it in my mailbox rather than delivering it to my door. It has been close to 100 degrees and when I brought it inside, it was very warm and the bottle was wet (condensation possibly). Will this diminish the effectiveness?

    • Jonathan Glauser July 10, 2018 at 2:20 pm #

      Hello Stacee,

      For the longest possible shelf life, you want to store CS at room temperature. But if it briefly gets warm it will be fine. The wetness on the outside of the bottle is surely condensation. Nothing to worry about :)

      Be well,

  16. Debbie September 8, 2018 at 4:26 pm #

    I have been sick with sinus and sore throat for almost a week. A friend gave me a tablespoon of colodial silver and now I’m freaking out because it expired in 2005! It came from an unopened, cobalt colored plastic bottle that according to my friend, has not been exposed to extreme temps. It was clear looking on the spoon. Could this make me sick?

    • Jonathan Glauser September 11, 2018 at 4:04 pm #

      Hi Debbie,

      I’m not sure what brand you’re using, but a high quality colloidal silver (like Mountain Well-Being) should last for over a decade. Companies generally stamp a 2-3 year expiration date as that’s standard industry practice. But if stored properly, and if it was made correctly, it should be fine. Look at the bottom of the bottle to see if there is any sediment. If there is sediment on the bottom (it will look like fine black sediment) then I would not use it. If there is no sediment, it’s likely fine. Either way it should not make you sick.

      To learn about how to properly store CS, please read an article I wrote called Shelf Life of Colloidal Silver.

      Be well,

  17. Janet January 17, 2019 at 7:10 pm #

    What if you forgot and left in in your truck (not been opened) in cold freezing weather?

    • Jonathan Glauser January 18, 2019 at 1:30 pm #

      Hi Janet,

      While colloidal gold and copper are ruined if allowed to freeze, colloidal silver can freeze and still be ok, although it is definitely not ideal. Did your bottle freeze completely? If it’s an unopened bottle and did not break, then it’s likely it didn’t freeze. Our bottles are filled to a level where if the liquid inside freezes, then the bottle often breaks. I hope this helps.

      Be well,


  1. Constant scratching - Page 2 - Forums - Yorkshire Terrier Community - June 16, 2015

    […] It is also recommended that you keep the product away from sources of electromagnetic energy (microwaves, electrical outlets) and direct sunlight. Look at this link: Colloidal Silver Shelf Life & Storage – Mountain Well-Being […]

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