Best All-Natural Diet Sodas

Oogave Organic Soda is intended to be a healthy alternative to popular mass-produced sodas and is targeted toward the vegan, kosher, and organic consumer. Oogave sodas contain 98 calories per bottle and 23 grams of sugar. (For comparison, a can of Coke contains 140 calories and 39 grams of sugar.) Aside from agave, the ingredients look similar to other natural sodas on the market.

• Organic agave nectar — This sweetener comes from the agave plant, which is native to Mexico. Originally marketed as a low glycemic sweetener, there is now skittish concern about agave's influence on blood sugar. Agave can contain up to 90 percent fructose and is much sweeter than sugar, so less of it can be used.
• Grapefruit extract, citric acid, and natural
  flavors — Similar to Izze products, these ingredients are used for the sole purpose of flavoring.