Castor oil in the old days was used to treat constipation and it's still used today to treat constipation.
Usually if you take a little castor oil you'll be sitting on the toilet soon after and be relieved of your constipation.
Castor oil can also be used to treat fungal infections such as toenail fungus or any other fungal infection you might have.
Castor oil is also good for treating Ringworm, Crotch Itch and athlete's foot.