Sodium citrate derives from the sodium salt of citric acid. It’s mostly used as a food additive typically for flavor or as a preservative. Sodium citrate gives most lemon-lime soft drinks their signature tart flavor. Medically, it acts as an anticoagulant in blood so it can be stored for long periods of time. As a supplement, the salt can help restore healthy pH levels. When taken as a supplement Sodium Citrate acts as an alkaline agent for the prevention of kidney stones. Sodium citrate is a great antioxidant and is 100% food safe. Sodium Citrate has many more applications, these are just some common ones.