TrialFinder Clinical trials, in plain English.
Trial Design

Placebo-Controlled — What It Means in Clinical Trials

Plain English Definition

A placebo-controlled trial compares the new treatment against a placebo (an inactive treatment) to measure whether the drug truly works. This is considered one of the most reliable ways to test a new medicine. In many cases, the placebo is given on top of your existing treatment, not instead of it.

Why It Matters

If a trial is placebo-controlled, there is a chance you may not receive the new drug. Ask the research team what percentage of participants get the active treatment and whether you will still receive standard care.

Example

You might read: "Randomized, double-blind, placebo-controlled trial." This means some participants get the real drug and some get a placebo, and nobody knows who is in which group.

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