St. John's Wort 300 mg 250 caps by NOW is a standardized extract containing 0.3 Hypericin. This dietary supplement is GMP quality assured. and it is also certified as vegetarian and vegan. so it's safe if you don't eat meat or animal products. St. John's Wort has been used for centuries for depression. so if you are feeling really stressed out or negative. this could be a good solution.