I've been taking Colloidal several times per day, every day going on 2 years and I've taken two breaks from my treatment to assess my condition of which both times, the pain and sickness returned. However, the first time I stopped, the symptoms returned after only 5 days. However... the second time, the symptoms did not appear until after 10 days.
And though I know this likely isn't a very accurate answer, I'm under the impression that the bulk of Colloidal Silver stays in the blood for 3-5 days following cessation. But that's only a best guess I'm afraid.