A new study reveals that a common dietary supplement, often marketed as a natural remedy for sleep and anxiety, may actually worsen symptoms in some individuals. Researchers found that the supplement, which contains high levels of melatonin and other herbal ingredients, led to increased restlessness and disrupted sleep patterns in a subset of participants. The findings challenge widely held assumptions about its safety and effectiveness, suggesting that individual responses can vary significantly. Experts now caution against self-prescribing such supplements without professional guidance.