colloidal does not.  ionic can if you drink a lot it's called argyria and only people with severe mental disorders get it from thinking they have incurable magic things in their bodies and drink half a gallon of badly made ionic silver a day If you are normal a small amount of ionic won't turn you blue, but you really should get colloidal how to tell the difference? colloidal should be visibly clear not cloudy.  It could also be yellow to orange and brown (like tea), depending on concentrations. If it's cloudy its wrong. Beam a laser or flashlight thru it, it should cloud up and be visibl (Tyndall Effect).  Also, if you use a UV light such as for checking for hornworms on tomatoes or checking hand stamps at clubs, it should absorb nearly all the UV light and not shine through (leaving maybe a very dim yellow light, which is from manufacturing defects in the LED lights)