I have upped my intake to 5g ED/170lbs (100mg/kg recommended), and noticed a considerable difference, along with taking 4g choline. I take it for an additional reason, though. Piracetam increases oxygen absorption in the brain. I have been disabled for the past 8 years (6 of those years complete disability) from headaches and memory probs resulting from mild traumatic brain injury. I have tried every medication available for headaches to no avail. To shorten a long story (damn doctors...) once I started taking piracetam, the headaches reduced to a manageable level which now allows me to exercise for the first time in 8 years.
Effin' doctors, FDA, drug manufacturers -- they eliminate the effective supplements so they can make money on ineffective and side-effect laden medications. I almost killed myself many times because the constant pain was so severe, and there was no way to get away from it. Ought to start another thread on alternative healing supplements like B17 for cancer elimination, so others can have an avenue to research for themselves!!!!