Dietary Supplement. St. John's Wort (Hypericum perforatum) is an herbal extract that has been used in European for years. This material has been standardized to contain 0.3% Hypericins, known active components contained in the herb. Research has indicated that hypericins interfere with particular enzymes in the brain that inhibit the feel good neurotransmitters such as serotonin, epinephrine and dopamine. St. John's Wort is an effective nutritional supplement to support today's stressful lifestyle. Enhances well-being. Supports a positive mental outlook. Standardized to 0.3% Hypericins! Contains no allergens & artificial colors.