prescription –n. written permission from a doctor that directs a pharmacist to give a patient a drug

hormone –n. a natural substance produced in the body that influences growth and development

benefit –n. a good or desirable result

doubt –n. a lack of trust or belief in something

labeling –n. messages on products that describe the product, what it does and may provide directions for use

cardio –prefix related to the heart

supplement –n. an extra nutritional substance that is taken in the belief that it will improve health