Which brand? Thanks for the detail.I'm putting this comment in because I decided to try pregnenolone again. In the past it has caused terrible insomnia (no sleep for DAYS) and I decided probably taking way too much. I bought some 10mg cheapo stuff, started taking it. Well, I did my usual "on again" "off again" "on again" testing to see if I could tell a difference, and the data is IN. With this 10mg of pregnenolone upon waking daily, I have more energy, more motivation, get way more done, and DO NOT NEED MY 90mg Naturethroid any more. It is way cheaper and more effective. Does not seem to affect reproductive hormone levels in any way I can detect. (When a doctor, long ago, was trying to fix my hormones with high dose pregnenolone, that is when I found I simply did not sleep on any dose higher than my current 10mg.)