Jamba Juice has introduced a new line of protein smoothies in the US.

Jamba Protein Smoothies contain are produced using real fruit and include calcium, riboflavin and phosphorus.

Jamba franchisee and tennis player Venus Williams said: “Jamba Protein Smoothies are a perfect way to refuel and regain energy.

"Jamba Juice claim that the new line of protein smoothies offer several health benefits."

“My daily workout is often two hours of intensity and a protein-based snack or beverage afterwards is essential. These new Jamba smoothies are the perfect solve for my fitness needs and delicious, too.”

The company also said that each smoothie contains at least 28g of protein and makes an ideal pre or post-workout snack.

The new line of smoothies includes Cookies ’n Crème Protein, which is made from real cookies;  Chocolate Protein, featuring Jamba's 'chocolate moo'd', which has been blended with whey protein and banana; and PB & Banana Protein, which contains protein-rich peanut butter blended with bananas and whey.

Jamba Juice claimed that the new line of protein smoothies offer several health benefits, including curbing of carb highs and lows, accelerated calorie burn, preserving lean muscle, and promoting muscle repair and growth.

Jamba owns and franchises Jamba Juice stores through its wholly-owned subsidiary, Jamba Juice Company.