my concern is my seemingly sudden sleep disturbances after taking the igf 1 supplement. it was so foolish of me to even try to play with my brainchemistry after a concussion. however, i find hope in that it was only about 1 and a half doses and most research shows that even when put under tongue for absorbtion little to no effects occur. the dose i took was one and a half doses out of s bottle that contained 100,000 nanograms. research shows that one would have to take 25 million nanograms daily to grt hgh like results. this gives me hope that i couldnt have effected my igf 1 levels with just a little over a single dose.