andwes,In addition to the lemon juice and the added calcium citrate and vitamin C (asorbic acid), Minute Maid All Natural Lemonade contains pure filtered water, high fructose corn syrup, sugar, and natural flavors. It does not have caffeine as one of it's ingridients. I suspect, depending on the sugar content, that sugar may be your culprit if you have a tendency to get hyper from sugar.
There are lots of products out that are caffeine free including Diet Coke.
Some of us tolerate caffeine in moderate doses.
Be well,
Kitt