Citric Acid Anhydrous can be used as a preservative, flavor enhancer, and pH regulator. It helps stabilize active ingredients in supplements and medications, improves the absorption of minerals like calcium and magnesium by chelation, and is a key component in effervescent products and hydration formulas. It can also act as an antioxidant to protect against oxidative stress. 

Tripotassium citrate is used in nutraceutical, foods and beverage and industrial applications, and can act as a buffering, sequestering, or emulsifying agent; often replacing trisodium citrate in low-sodium formulations.