@Gotchaeme - Is this the sort of product that you have been given?
http://www.althealth....o_12_silica/450_tabs/
If so, it looks likely to be homeopathic remedy. If it is a homeopathic remedy, then you can relax somewhat, because you can be very sure that it contains virtually no silica whatsoever. According to Homeopathic thinking, less is more, and they tend to use massive dilutions that mean that no active ingredient at all remains.
I am personally extremely sceptical of the value of any homeopathic remedy, and would urge you to get some proper advice from a GP on how to treat any skin condition you might have.