An ideal placebo is a control drug that produces the same effects as the drug that is being tested.

Psychological

Explanation:

According to my research on medical studies, I can say that based on the information provided within the question an ideal placebo is a control drug that produces the same Psychological effects as the drug being tested. This is because the point of a placebo is to see how people react to it compared to the people receiving the actual test drug, since the placebo does not actually have any effects on the person.

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