Nutritional information may vary depending on flavour. A delicious shake that delivers up to 36g of protein per serving, along with other ingredients specifically chosen to support your weight-loss programme. What is Impact Diet Whey Protein? Impact Diet Whey is a whey protein powder that has been specially developed to provide a boost of protein without unnecessary carbs. Weve also added a range of specific ingredients to support your dietary plan. Whats more, this protein shake is also great for vegetarians, so you can enjoy the benefits of Impact Diet Whey whatever your lifestyle. What does Impact Diet Whey do? Impact Diet Whey is an excellent source of protein to be consumed as part of a healthy and active lifestyle during your weight loss journey.