Celery Seed Extract from Natural Factors contains 85% 3-n-butylphthalide, or 3nB for short, a beneficial compound unique to celery and natural support for the circulatory system.85% 3-n-butylphthalide.Support for the circulatory system.75 mg per vegetarian capsule.Gluten Free, Vegan, Vegetarian, Non-GMO.Celery Seed Extract contains 85% 3-n-butylphthalide or 3nB for short - a beneficial compound unique to celery that provides support for healthy blood pressure already within the normal range.* One capsule provides the same level of 3nB as 4-6 ribs of celery.Rice powder gelatin capsule (gelatin purified water) cellulose magnesium stearate (vegetable grade) di-calcium phosphate silica. Contains no artificial preservatives or sweeteners; no corn dairy wheat or yeast.