Herb Pharm's Celery contains phthalides. organic chemical compounds which may help lower levels of stress hormones. One of these compounds. 3-n-butylphthalide. may help lower cholesterol and blood pressure. The coumarins in celery can help potentially thin the blood. Its linoleic acid is an omega-6 fatty acid. The plant is a natural source of electrolytes. which are associated with energy and endurance. The cooling effect of this plant suggests anti-inflammatory activity. Celery also contains apigenin and luteolin (which may help boost brain function).