Karfas has a good aroma and when it is hung under the neck, it relieves toothache.
Karfas is hot and dry, and it opens the clogs of the liver and the spleen. Wet celery leaves helps the stomach and the cold liver, causes urine as a diuretic, menstrual flow, and dissolves stones. Celery grains are more effective in this regard. Karfas also stimulates semen production and relieves offensive breath. Ar-Razi said, "One should avoid eating it if he fears he might suffer a scorpion sting."
Taken From: Healing with the Medicine of The Prophet (peace be upon him) By Imam Ibn Qayyim Al-Jauziyah