Promotes a Positive Mood St. John's Wort extract has been one of the most popular herbal products in Europe - and for good reason - it promotes a positive mood. The extract used in this product is a highly-concentrated extract of St. John's Wort (Hypericum perforatum) leaves and flowers. Directions Take 2 capsules twice daily, preferably with food. For maximum benefit use for at least 2 months. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.