Caps Plus Contains 125 mg of grapefruit seed extract, equivalent to 12-15 drops of NutriBiotic GSE liquid concentrate, combined with the extracts of echinacea and artemisia annua. Vegetarian Capsule. Echinacea is a proven immune-boosting herbal. Artemisia is effective against parasites, colds, dysentery, indigestion and fevers related to sunstroke, and tuberculosis. Currently the World Health Organization is doing research using the seeds of Artemisia for treatment of malaria. Use Capsules Plus when you suspect or know you have an infection. Echinacea and Artimisia are proven immune-system boosters, but are not intended for long-term use. As a preventative, use liquid or tableted GSE. Safety-sealed and "nitro-packed" for extra freshness and potency.