Dayang Energy Effervescent 20 Tablets is a food supplement based on vitamins and minerals with sweeteners.Vitamins B1, B2, B3, B5, B6, B8, B12, C, as well as copper, iron, magnesium and manganese promote normal energy metabolism and help reduce fatigue. In addition, zinc supports normal cognitive function, while copper and magnesium contribute to the normal functioning of the nervous system.orange flavor.Food supplements should never replace a healthy, varied and balanced diet and a healthy lifestyle.