PLACEBO
Clinical trials for PLACEBO explained in plain language.
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Can a sleep pill boost success in opioid treatment?
Disease control CompletedThis study tests whether adding the sleep medication suvorexant to standard buprenorphine treatment can improve sleep and medication adherence in people with opioid use disorder who have recently used fentanyl. Participants first stay in a residential setting for five days to sta…
Matched conditions: PLACEBO
Phase: PHASE2 • Sponsor: Johns Hopkins University • Aim: Disease control
Last updated Aug 12, 2026 00:00 UTC
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Caffeine's Muscle-Boosting power may fade with age
Knowledge-focused CompletedThis study investigates whether caffeine improves muscle strength and endurance differently in young adults (ages 18–35) compared to older adults (ages 55–80). Participants receive either caffeine or a placebo before performing upper- and lower-body exercises. The goal is to unde…
Matched conditions: PLACEBO
Phase: NA • Sponsor: University of Alcala • Aim: Knowledge-focused
Last updated Jul 19, 2026 00:00 UTC
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Seeing is believing: your brain can learn to feel less pain by watching others
Knowledge-focused CompletedThis study looked at how watching someone else experience pain relief can actually reduce your own pain. Researchers used brain scans to see which parts of the brain are involved in this effect. 211 healthy adults took part, and the goal was to understand the brain mechanisms beh…
Matched conditions: PLACEBO
Phase: PHASE2 • Sponsor: University of Maryland, Baltimore • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:07 UTC