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Placebo effect
- ... of participants to confirm its effectiveness, monitor side effects, compare it with standard or similar treatments or a placebo , and collect information that will allow the new ...
- ... headaches, or tremors. In clinical trials, these side effects do not occur more frequently in people taking peppermint oil than in those taking a placebo. A placebo is a pill or treatment with ...
(National Heart, Lung, and Blood Institute) 