Maintenance (phase 3) you are allowed to have diet sodas. Other flavored beverages allowed include: select alcohol in limited quantities, Glaceau fruit water, crystal light, diet snapple, etc. Try to develop a habit that replaces a previous sugary soda habit.
Treat yourself to Walden Farms Calorie Free Fruit Strawberry and Blueberry Syrups. Made with concentrated fruit extracts and natural flavors, they make milk a special treat, are delicious over ice cream, enhance the flavor of fresh fruits, great in smoothies and delicious in recipes that call for fruit flavors
Here are some suggestions.