I'm no expert, but my guess is that this could be true, because selenium is one 
of the factors that helps remove silver from the body, and people who use 
colloidal silver are recommended to supplement with selenium.  In helping to 
remove the silver from the body, the selenium most likely gets used up itself 
to some degree, more than if you were not using CS.

I take 200 micrograms (mcg) of selenium a day, and have since I started using 
CS.  

Del  
  ----- Original Message ----- 
  From: [email protected] 
  To: [email protected] 
  Sent: Monday, December 17, 2007 4:00 PM
  Subject: CS>Rebuttals please


  The following post came through one of my equine lists.  Can anyone here 
comment on this please?  MA

      "I caution anyone using the Colloidal silver for an extended period of 
  time. It depletes the body
  of selenium. I have personaly used it on my lyme disease 
  gelding, and this was how I found it out. I now do NOT give 
  Especial any CS at all. "