We carry 4 kinds of Silver. We find these to be excellent occasional supplements, and can be used to gargle on the way down.
Silver Water brand is made with live, structured water and now offers an additional strength 10 ppm for short term use, as well as the 3 ppm more for daily use.
Silver Water also comes in a gel form.
Sovereign Silver is a popular brand that comes in many sizes and forms including spray bottles, vertical sprays, dropper bottles.