Plain-English translation of NCT04899687 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Phase 2 — Testing in a bigger group (up to a few hundred people) to see if the treatment actually works and is still safe.
This trial is testing whether , an over-the-counter cough suppressant, might help reduce symptoms when combined with , a standard prescription medication for OCD and related conditions. The study involves two groups of participants who will take alone and then with the added medication in different orders, to see if the combination provides better symptom relief than alone.
OCD and related disorders like body dysmorphic disorder, health anxiety, and somatic symptom disorder can be very disabling, and current treatments don't work well enough for everyone. Researchers hope that adding this medication might boost the effectiveness of standard OCD treatment and help more people feel better.
You likely qualify if…
You likely don't qualify if…
You will be in the study for 8 weeks total. Depending on which group you're assigned to, you'll either take alone for the first 4 weeks and then add the cough suppressant for 4 weeks, or start with both medications together for 4 weeks and then stop the cough suppressant while continuing . The cough suppressant dose will increase gradually week by week as you tolerate it. You'll be monitored throughout to see how you respond to the treatment combination.
AI-generated summary from trial data · Jun 2, 2026 · Not medical advice
United States
Phase
Testing effectiveness
Sponsor
Stanford University
Collaborators
Avy L. & Roberta L. Miller Foundation
Enrollment target
~60 participants
Started
January 2022
Primary completion
April 2027
Age range
18 Years – 65 Years
Last updated on clinicaltrials.gov in May 2026.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
Alessa Gaeta, BA
Stanford University
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.