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The company makes its Certificate of Analysis available on the product page

"Dietary Reference Intakes for Japanese 2010: Water-Soluble Vitamins" Journal of Nutritional Science and Vitaminology 2013(59):S67S82

Cycling strategies offer viable alternative to continuous use for many users, with protocols like 6 months on followed by 2-3 months off potentially maintaining 60-80% of continuous use benefits at 65-75% of annual cost while avoiding indefinite dependency and accommodation life flexibility

Ollerenshaw S, Jarvis D, Woolcock A, Sullivan C, Scheibner T

Additionally, it strengthens your natural moisture barrier to prevent daily hydration loss effectively