Nutritional supplements are widely used by patients and athletes around the world for many different reasons. Many companies are thriving on this billion-dollar industry with little proof that these substances do what they are reported or suggested to do. Beta-hydroxy-beta-methylbutyrate (HMB) is a relatively new supplement on the ergogenic landscape. Studies of HMB supplementation have shown minimal gains in strength and lean body mass in specific populations, mainly untrained athletes and patients with wasting syndromes. HMB use in those athletes involved in regular high-intensity exercise has not been proven to be beneficial when multiple variables are evaluated. Unlike other ergogenics, with HMB no adverse events have been reported in association with short-term use. Despite these findings, HMB cannot be recommended as an ergogenic until further studies in larger groups reproduce early data. This review summarizes current literature on HMB, and provides the reader with information to better educate and treat patients and athletes.

In athletics today, there is no shortage of participants looking for an extra edge in competition. In addition, there is no shortage of nutritional supplements for athletes to use with hopes of reaping ergogenic benefits. Ginseng is and will continue to be one of these supplements consumed by athletes despite little or no scientific data to support its ergogenicity. Multiple different types of ginseng can be consumed; the most studied and most common types are Siberian, Chinese, and American. Although related, each has different active compounds, and likely, different effects on the body. There do not appear to be significant adverse effects when used for short periods, but further studies are needed to confirm this. Similarly, more studies are needed to address the ergogenic potential of ginseng. At this time, ginsengs cannot be recommended to improve athletic performance, but there may be some utility for athletes by preventing viral upper respiratory infection and improving cognition. This review evaluates recently published literature on ginseng use in athletes.