If i have only one functioning kidney (was born like this), can i use silicon supplements like biosil (ch-osa)? is it safe for me?

Probably safe but...: I consider biosil to be a very safe & benign supplement but in researching this i found statements like: "long-term use or very high doses of horsetail (or silica) supplements have caused irreversible kidney damage, especially in people with existing kidney disease."- from http://www.Vitalhealthzone.Com/nutrition/minerals/silica.Html#9 but I have not found any references on this- see my comment:.