Guaranteed Potency.
. Celery Seed Extract is standardized for phthalides, a group of secondary phytochemical compounds that provide benefits by either stimulating or inhibiting various enzymes in the body.Solaray Celery Seed Extract 100 mg - 30 Vegetarian Capsules 85% Phthalides . This extract is produced with a proprietary process and is intended to provide nutritive support for joint health.