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Celery; Medicinal uses
Coumarin compounds in the celery appear to be useful in toning the heart and blood vessels, and the same compound is also thought to help migrane. One of them, 3-n-butyl phthalide, was found to significantly lower blood pressure.
Celery juice has been used to alleviate oedema (water retention), treat rheumatism and clear skin problems and combined with a little lemon juice, it can help to prevent a cold developing.
Both celery and celeriac are used to treat hypertension, and the seeds are used as a sedative and to relieve flatulence. Dried ground celery is sold as a salt substitute for those on a low sodium diet. See 'Celery'; 'Celery, Culinary uses'; 'Celery, Medicinal uses'