A countless number of new, renamed, and variations of sport supplements flood the market each year. Many of these are accompanied by slick marketing campaigns promising too-good-to-be-true results. For athletes seeking a safe, effective edge to their training and performance, supplements can be a confusing and serious matter.

The Athlete's Guide to Sports Supplements separates fact from fiction, provides quick answers to the most common questions, and delivers information you can trust.

Sport nutrition and supplement experts Kimberly Mueller and Josh Hingst...