NOW Foods Castor Oil Softgels provide 650 mg of pure castor oil in a convenient softgel — delivering ricinoleic acid, castor oil's unique and biologically active fatty acid, in an easy-to-swallow capsule without the thick, unpleasant texture of liquid castor oil. Ricinoleic acid binds to prostaglandin E3 receptors in the intestinal wall, stimulating muscle contractions that promote bowel movements — explaining castor oil's traditional use as a gentle, reliable laxative. Each softgel provides a measured, consistent dose for predictable effect. NOW Foods uses pure castor oil encapsulated in gelatin softgels manufactured in their GMP-certified facility. A convenient alternative to liquid castor oil for those who want its bowel-stimulating benefits in an easy capsule format.