- Effervescent tablets. - 15 and 30 tablets. - Vitactiv has a balanced formula and its ingredients are adapted to the Nutrient Reference Intakes (NRVs). - Contains vitamin C and zinc that contribute to the normal functioning of the immune system and the protection of cells from oxidative damage. - Contains 1,000 mg of vitamin C that helps reduce tiredness and fatigue. - Orange-flavored effervescent tablet. - Suitable for lactose intolerant people.