Do Testosterone Boosters Work? Do Over The Counter Testosterone Boosters Work? Boosting testosterone levels using supplements often marketed as testosterone boosters remains a popular trend. These supplements, easily accessible online or over-the-counter from stores like GNC , claim to elevate testosterone levels and alleviate symptoms of low testosterone. Yet, the efficacy of these supplements remains uncertain. While some studies indicate a modest impact on testosterone levels, the results are inconclusive and short-lived, creating a debate within the scientific community about their effectiveness. Most of these supplements contain essential vitamins and minerals like zinc, magnesium, and vitamin D, crucial for testosterone production. However, multiple studies have refuted their actual ability to elevate testosterone levels. Instead, these supplements might assist in optimizing the body's natural production but are unlikely to significantly increase testosterone levels ...