PhytoCyst by Drasanvi is a dietary supplement based on a dried cranberry extract sourced from *Vaccinium macrocarpon*, commonly known as cranberry. Cranberries are appreciated for their overall nutrition—fiber, vitamins, and minerals—but the key active component is the proanthocyanidins (PACs‑A). To ensure a robust amount of this compound, the PhytoCyst extract is standardized to 40% PACs‑A. Alongside this premium extract, the formula includes fructooligosaccharides, lactic cultures, and vitamin C, which support the normal function of the immune system.