* Dietary Supplement * Herbal Factors * 0.3% Hypericin * Mood Support * Purity & Potency Guaranteed Scientific research shows that St. John"s Wort may lighten mood and support a positive emotional balance. St. John"s Wort Extract (Hypericum perforatum) is standardized to contain 0.3% hypericin. Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.