http://www.buypiracetamdirect.com - In overview of thirty scientific papers, piracetam in large doses didn't demonstrate sedation, brainwave change, and have harmful effects around the heart, lung area or stomach (Mind Food and Wise Pills 1989 p.142). You will find anectodal reviews of minor nuisance unwanted effects in certain piracetam customers for example insomnia, jitteriness, and head aches - which were temporary and reversable on discontinuation.