After much reading, there seems to be no real agreement or consistent information on how much colloidal silver can be ingested. I have been using it for ten years for illnesses only. I take 4 tablespoons a day for two weeks probably twice a year. I use a high quality nano silver. I worry that I have been taking it too long. I am interested in others' practices, dosages and experiences. How long have you been taking silver and what are your dosages?