still, pop in general is high in sodium. For example, Diet Pepsi has 35mg of sodium in a 12 oz can. A 20-something oz bottle of, say, gatorade has around 12mg!!
FYI - Diet Pepsi and Diet Coke are consider Very Low Sodium at those lvls and labelled as such per FDA Guidelines. I happen to have a bottle of each right here with me.
Coke is 35mg/8fl oz.
Pepsi is 25mg/8fl oz