Standardized to Contain Minimum 40% 3-n-butylphthalide (3nB) Each vegetable capsule (375mg) contain: Celery (Apium graveolens) seed extract 150mg (Standardized to Contain Minimum 40% 3-n-butylphthalide (3nB)) Dosage: Adult take 1 capsule twice a day, after meals.