Something interesting about Colloidal silver...

This has happen twice now: i start taking 4oz or more of CS a day and by the third day my allergies get real bad, runny nose non stop, dark bags under eyes, etc. i do this for about a week and sysmtons continue so i figure CS is bad for me then i stop. The by the third day once i've stoped my allergies seem to be gone. Then of course they slowly start coming back but hardly noticeable as i'm taking some other great herbal supps.
I'm wonder what the CS is doing and maybe i should try in smaller dosages, 1oz a day. Ur thoughts?