Nutrabay, Indian supplement retailer has launched its highest-strength Shilajit with 80% fulvic acid to turbocharge testosterone levels. "Modern lifestyle and stress have taken a toll on men's testosterone. We're here to fix that," says Divay, founder. Nutrabay Shilajit has clinically proven raisin from 18,000-foot Himalayan peaks to promote strength, stamina, and power, said the brand.