phenibut handbook : the ultimate guide to curbing anxiety and helping your social side (english edition)  are you ready to maximize your potential and push past hurdles?<br>all you need is contained within this one book!<br><br>this book contains<br>- introduction to anxiety<br><br>- blood brain barrier<br><br>- phenibut a brief history<br><br>- chemistry of phenibut<br><br>- pharmacology of phenibut<br><br>+ much more!<br>