The O/U certifies Splenda sweetener as an O/U Pareve product. Some Splenda bags include sample Iced Tea Concentrate drink pods and Strawberry Watermelon Concentrate Drink Pods, which are certified by the O/U as O/Ud (dairy). The outer bags are labeled with both an O/U symbol and an O/Ud symbol. The O/U symbol pertains to the Splenda sweetener itself, while the O/Ud (dairy) symbol pertains to the drink pods.