[header] How to relieve constipation with castor oil [title] Tell your doctor or pharmacist about all the drugs you are taking. [step] It is possible for castor oil to interact with certain drugs, and you should be sure that you won't experience any harmful drug interactions before taking it. [substeps] Tell your pharmacist about any allergies you may have. 
Castor oil contains certain ingredients that may affect you if you are allergic to them. [title] Do not use castor oil if you are pregnant.