Bio-InfluZinc + C is a combination nutritional supplement containing zinc and vitamin C in pastille form. TheVitamin C is derived from acerola berries, a type of fruit originating from the West Indies , and one of the richestsources of vitamin C. The bio-availability of vitamin C from acerola berries is significantly greater than for syntheticvitamin C (Uchida et al, 2011).