This recipe for an orange smoothie is easy to make like most other HCG diet recipes, and it is very low in calories as well. It's a great option if you prefer oranges and it tastes like it's a lot more calories than what it actually is. It's a good idea to have a few favorite HCG diet smoothie recipes at your disposal just in case you don't have the time to make a full meal. There are plenty of HCG diet recipes that don't take very long, but it still can be inconvenient sometimes to have to cook your meals.
Oranges are particularly good for weight loss because they are high in fiber. In general, any foods that are high in fiber are good for weight loss. Oranges are low in calories, even the larger oranges. A medium size orange is just 63 calories while a smaller one is about 45 calories. A large orange is about 86 calories. You can choose whatever size of orange that you want for this recipe, but keep in mind that the size of the orange will change the number of calories that you are consuming.
Research has even shown that eating foods that are high in vitamin C like oranges may help you lose weight. A study that was published in the March 2005 Journal of the American College of Nutrition found that people who consume more vitamin C tend to have a lower body mass index. That's one main reason why citrus fruits are a part of the HCG diet. People who get a sufficient amount of vitamin C in their diet also eliminate fat more rapidly than those who don't. 
Oranges can definitely help you lose weight on the HCG diet, and this smoothie recipe is delicious and addicting. It is for just one serving but you can feel free to scale it up as much as you would like. Don't add any extra sugar to this recipe, but stevia is perfectly fine to include.
- 1 medium orange
- 1 tbsp. lemon juice
- 1/2 cup of ice
- 1 cup of green tea (optional) or water
- Truvia to taste
- Mix ingredients together in a blender.
- Blend until desired texture is reached.
- Pour and serve
Calories per Serving: 68
References  - http://www.livestrong.com/article/307893-oranges-weight-loss/