Your favourite healthy meal shake in an easy to carry format. Perfect for someone who just wishes to try the Herbalife Formula 1 shake for a few days, or to take along with you for a quick and tasty low-calorie meal. Click here to read more about the Herbalife Formula 1 Shake. The Formula 1 Shake is rich in all vitamins and minerals that make it a great healthy meal. Each serving contains 18g of protein that will keep you feeling full and help you with your weight loss goals.