Hi, I am 33 year old, last year I had terrible year, bad allergies. This 2010 year i am doing colloidal silver. I believe it will absolutely help your son, depends in what condition is his immune system. it may help fast, in 2-3 days, or it may start to help in a week just depends how long it is needed to fine tune his immunity. At any rate I absolutely believe that it will do terrific job for him. I would use not less than one good teaspoonful a day for 6 year old. Could be a good idea to give him like about two teaspoonfuls a days for 3-4 days and then switch to one teaspoonful see if it goes stable and keeps him happy, then try to reduse the dose to the amount that still works well for him. It could be good to have him on silver for one, or more months to get his immunity where it belongs. I believe if to discontinue treatment with time human body as a fine instrument can discord again. But once you have a hold of a good remedy it's tunable again. It's just my opinion on the whole thing, you do act at your own will.