I've meant to post about this form of silica G-5. AcresUSA just did a great article on it in thier June issue. When I went to the conference last Dec I talked with the person importing it into the US and was really intrigued. I've not ingested it but have used the gel form on my skin and it's very nice for building collagen.
Dr. Abrahams (the producer of iodoral) also has done research on silica. He produces a product called Cogimax which is a clay silica he uses for the brain. I can't take it too late in the afternoon or it keeps my brain going to much for sleep. Not wired like coffee would but more like ideas keep popping up and I don't want to sleep. I take it mid-morning now.