Of all the water-soluble vitamins, vitamin C is the most unstable and easily destroyed vitamin. It is highly soluble in water and gets easily destroyed by oxygen, alkalis and high temperatures. Exposure to oxygen causes the destruction of vitamin C.
For extra cleansing and to suppress appetite add 2 teaspoons of apple cider vinegar and/or a dash of cayenne pepper to the beverage. If you need a sweetener you may want to add stevia. You can also add honey, although it is not recommended for P2 or for every day consumption if you are on P3/P4.