Most vitamins are denatured by being frozen; yet another reason to prefer fresh, unprocessed fruits and vegies. I don't think Ribena ever entered my house and my kids refuse any of the cola-flavoured acids-with-sugar and caffeine.
But, when it was broadcast on ABC TV (Oz), I relished the story of the two girls from NZ just getting stuck into a science project and then taking on the company and winning.