AMORYN contains a standardized amount of hyperforin, the active constituent in St. John's wort. A daily dose (two capsules) of AMORYN contains at least 36mg of hyperforin, an amount shown in scientific studies to help improve mood. In fact, the St. John's wort extract in AMORYN is the same high-potency extract used in Europe. Many other St. John's wort formulas do not contain a significant amount of hyperforin, and as such may have limited effect. Be wary of products that claim to be "standardized", because most standardize only for hypericin (but not hyperforin). While hypericin may have some effect, studies suggest that hyperforin is primarily responsible for the emotional benefits of St. John's Wort. In other words, AMORYN is one of only a few products that uses the power of science to harness the full potential of St. John's wort. If you're currently taking another brand of St. John's Wort, there's no need to continue taking it once you start taking AMORYN.