Oh, you do not actually need injections of C. It is perfectly soluble in water and any excess is derived from your system easily, unless you gastronomic acids are very high. The secret here is consistency since you can not build it up for the future use. And ofc there is no such thing as a magic pill. Vitamin C will not eliminate stress and the cause of increased Cortisol levels:))) If you get rid of causality you will simply need less C :)  But before you remove causality itself, C will help a lot. try it, it does not do any harm :)