The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,875 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. This ancillary study is being conducted among participants in VITAL and will examine whether vitamin D or omega-3 fatty acids affect risk of infection and plasma hCAP18 levels.
Accelerate enrollment with targeted advertising campaigns
Step 1: Add a recruitment campaign (optional)
Our expert team has 10+ years running successful recruitment campaigns for clinical research sites
Your plan includes posting your clinical trials on our recruitment portal and mobile apps. Boost your trials with targeted advertising campaigns to reach more participants, faster.
What you get with a targeted campaign
We handle everything: audience targeting, creative development, geo targeting to your site locations, and ongoing optimizations. Qualified participant inquiries flow directly into your dashboard. Inquiries typically begin within a few days and continue throughout the campaign.
Select your study's therapeutic area and indication below. This helps us calculate accurate campaign budget and delivery timelines based on recruitment complexity.
Maximum participant inquiries available for this indication.
Cost per Inquiry
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Total Campaign Investment
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Estimated Campaign Duration
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Timeline varies based on campaign performance and audience targeting.