Source Naturals Men's Life Forceâ„¢ Multiple is a scientifically advanced formula, based on the award-winning Life Forceâ„¢ Multiple. Additional ingredients address men's specific health concerns, including prostate function, reproductive health, hormonal regulation, libido, and more. Designed to meet the nutritional needs of men of all ages, Men's Life Force delivers deep cellular energy to your key body systems. When these systems are Bio-Alignedâ„¢, you experience enhanced vitality, strength, and performance.