A new study reveals that a common dietary supplement, often marketed as a natural energy booster, may actually increase the risk of heart-related complications in certain individuals. Researchers found that the supplement—widely used by athletes and health-conscious consumers—can elevate blood pressure and strain cardiovascular function when taken in high doses. The findings challenge long-held assumptions about its safety, particularly for those with preexisting heart conditions. Experts are now urging caution and further investigation into its long-term effects.