Food supplement based on potassium ascorbate, an alkaline and non-acid form of vitamin C, enriched with ribose. Vitamin C has many properties: it supports energy metabolism preventing tiredness and fatigue; it protects cells from oxidative stress and regenerates the reduced form of vitamin E; it contributes to normal immune system function, healthy nervous system and psychological functions; it supports collagen formation and helps maintain normal function of blood vessels, bones, cartilage, skin, teeth and gums; it supports iron absorption.