Who's Your Daddy has begun shipping its sugar-free green tea 'King of Energy' drink in the US.

Who's Your Daddy is targeting women and "the more mature generation" who are interested in the antioxidants, cleansing, and weight loss qualities associated with green tea.

"We are very excited to have the final complement to our initial line of 'King of Energy' Drinks with the addition of the Sugar Free Green Tea," said Joseph Conte, vice president of Who's Your Daddy, yesterday (27 February).

"Based on the consumer taste test that we have conducted over the past several weeks, we have extremely high expectations for the sugar-free green tea, especially among consumers who may be counting calories."

Who's Your Daddy noted that additional flavours are "in the development stage".