Exercise. Eat nutrient-packed foods. Reduce caloric intake. These are the three measures that health experts have long touted as the simple, yet effective keys to weight loss. But for those who lack the free time to hit the gym or the extra cash to spend on fresh produce, whole grains, and lean proteins, these golden rules might feel a bit inaccessible. One solution some reach for? Supplements.

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Approximately 15 percent of U.S. adults have used a weight-loss dietary supplement at some point in their lives, and women are twice as likely to use them than men, according to the National Institutes of Health. Aside from the run-of-the-mill offenders such as caffeine and Orlistat is resveratrol. This antioxidant compound can be found naturally in red wine, red grape skins, purple grape juice, mulberries, and in smaller amounts in peanuts, and has been used as a way to enhance an already healthy lifestyle.