Heritage Store, Castor Oil, 1 GALLONProduct Description Castor Oil has been used in many cultures around the world for over 3,000 years. In old herbal texts, it is called the "Palma Christi, Latin for the palm of Christ and has many healing properties. Doctors at the former A. R. E. Clinic, under the guidance of Dr. William McGarey, used castor oil for virtually every aspect of health. Edgar Cayce recommended castor oil packs over the abdominal area in 545 readings to benefit the liver