Wait for the offering or the AF article before buying.
And definitely don't buy based on all the #$%$ posted on this board.
Remember nvgn did a 1 for 25 reverse split last year and will now try and raise the cash they sorely need.
They have no approved drugs, and if the scientific evidence was really that good, you would see much more research from big pharma in this area.
It ain't gonna happen!