How to Compare Energy Supplements

There are many energy supplements and drinks on the market that contain both synthetic and natural ingredients. Some may have herbal stimulants and other substances that have not yet received FDA approval. It is important to read labels and become familiar with common ingredients.

Types

• There are two main types of energy supplements: energy drinks, and energy tablets or capsules. Both may contain any number of natural stimulants or other ingredients purported to increase energy or enhance athletic performance. In a 2008 report on energy drinks, researchers listed the top ingredients as: caffeine and caffeine-containing herbs such as guarana and kola nut, ginseng, taurine, inosital, Ginkgo biloba, and carnitine.

Effects

• Some supplements, such as ginkgo and ginseng, are still undergoing clinical study. However, the long-term effects of certain chemicals are well known. According to the Mayo Clinic, caffeine and caffeine-containing herbs can cause nervousness, irritability, insomnia, rapid heart beat, and increased blood pressure.

Warnings

• When choosing energy supplements, look for products high in vitamins, such as B12, which increase energy naturally. Avoid supplements with ingredients that have not been FDA approved, such as guarana. Avoid long-term use of products with caffeine, because this can lead to caffeine toxicity, heart arrhythmia and palpitations, and possible caffeine-induced seizures.