Placebo is?

Placebo is?

• A. An active drug
• B. A placebo is a placebo
• C. An inactive pill, liquid, or powder that has no treatment value
• D. A surgical procedure

Answer: (C)

Placebo is an inert substance used in clinical trials as a control to compare against an active treatment. It has no therapeutic value on its own, so any improvement seen with a placebo can be attributed to the placebo effect or other non-specific factors rather than to the treatment being tested. This setup helps researchers determine the true effect of the active drug or intervention by direct comparison. That definition matches the option describing it as an inactive pill, liquid, or powder with no treatment value. The other ideas don’t fit as well: an active drug has pharmacologic effects, so it wouldn’t be a placebo; saying “a placebo is a placebo” is tautological and not informative; and while a sham surgical procedure can function as a placebo in some studies, the standard definition typically refers to inert forms like pills.

Placebo is an inert substance used in clinical trials as a control to compare against an active treatment. It has no therapeutic value on its own, so any improvement seen with a placebo can be attributed to the placebo effect or other non-specific factors rather than to the treatment being tested. This setup helps researchers determine the true effect of the active drug or intervention by direct comparison.

That definition matches the option describing it as an inactive pill, liquid, or powder with no treatment value. The other ideas don’t fit as well: an active drug has pharmacologic effects, so it wouldn’t be a placebo; saying “a placebo is a placebo” is tautological and not informative; and while a sham surgical procedure can function as a placebo in some studies, the standard definition typically refers to inert forms like pills.