Effects of Commonly Used Medications on Mood and Choice

"Capsules will contain a commonly prescribed or over-the-counter medication, or placebo. A placebo is an inactive substance that looks like the study drug, but contains no active drug. The capsules given in this study may include sedatives, muscle relaxants, or anti-anxiety medications, stimulant drugs/weight loss medications, and antihistamines. More drugs are listed than will be administered to increase the degree to which volunteers are blind to the drugs being studied. Participants will not be informed of the specific drugs they will receive during or after the study. Participants will not receive any drug that is not named as a possible study drug in the written informed consent form. All the study drugs to be administered are legally marketed in the United States."