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Proven Fiber Gaspari is a formula that comprehensively supports the work of your digestive system. This supplement contains soluble and insoluble fibers from psyllium husk, sunflower lecithin and linseed, which greatly facilitate digestion. The excellent digestive support provided by Proven Fiber includes three essential elements: fiber, enzymes and probiotics. Changing your gut microbiota with probiotics is useful for improving your overall health, performance, and energy availability, especially if physical activity is an integral part of your life.