I think it's much safer (and effective) to stick to around 10ppm or less, and if necessary then drink more. There's only so much that can stay in suspension while keeping particles small, and my understanding is 10ppm is comfortably under that kind of threshold.
From: felipe lopez [mailto:felipelopezpas...@hotmail.com] Sent: 06 September 2009 10:10 To: chat definitivo de plata coloidal Subject: CS>120 ppm Hello friends,somebody knows if is dangerous to take colloidal silver in 120ppm,because the normal is between 10ppm. Thanks.