A few months back I was invited to help contribute a short (~300 word) communication on supplement stacking for a special issue of the British Journal of Sports Medicine called: A-Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance. I was co-author along with Jeni Pearce and the editors. A thank you to the British Journal of Sports Medicine for including my thoughts in their review.
http://www.ncbi.nlm.nih.gov/pubmed/23007180
