From the Manufacturer:
Celery Seed is used therapeutically due to the presence of constituents in the volatile oil component of the seed. Celery Seed is most often taken to aid in the maintenance of healthy joints. It is suitable for anyone who wishes to reduce the degeneration of body joints that commonly occurs with age. Celery Seed can also ease joint discomfort that occurs due to inflammation and is, in fact, mainly used for the relief of symptoms of such conditions as arthritis, rheumatism and gout. Celery Seed has an antiseptic property that makes it useful to the health of the urinary tract and a diuretic property to help relieve fluid retention - Celery Seed aids in the elimination of uric acid. These properties can prove useful in cases of bladder disorders, cystitis and kidney disorders. Celery also promotes the onset of menstruation. Celery Seed can help soothe the nerves and relieve pain. Consuming Celery Seed in food also aids in the digestion of protein.