placebo - n. a shot, pill, or substance that is given to patient like a drug but that has no physical effect on the patient

inflammation - n. a condition in which a part of your body becomes red, swollen and painful

dose - n. the amount of medicine or drug that is taken at one time

tremendous - adj. very large or great

stage - n. a particular point or period in the development of something

confident - adj. having a feeling or belief that you can succceed