By the way I live in Europe and have been taking piracetam (it is an approved medicine available at every drugstore here, over-the-counter in some countries, on prescription in others) every day (making just occasional pauses for a month or two) during about 15 years already and man it's just so great I don't want to live in a country where I can't get it easily. In my opinion (based on my own long-term systematic experience with it) piracetam is an essential for brain fitness, good quality of life, physical, creative, spiritual, educational and professional self-realization. And I have never had a headache during these years (except slight headakes that I had a couple of times after having drank a way too much alcohol) although I used to have headache almost every day when I was a child and wasn't taking piracetam!