
Every clinical trial ad does two jobs at once. It has to stop the right patient mid-scroll, and it has to pass IRB review.
According to the FDA's Recruiting Study Subjects guidance, direct advertising for study subjects is the start of the informed consent and subject selection process. That's why IRBs review ad copy, images, and formats before anything goes live. And it's why the strongest patient recruitment campaigns go into IRB review with multiple options ready to test, rather than a single version.
Below are seven ideas drawn from past Antidote campaigns. Use them as a starting point for building an IRB packet with enough variety to find what resonates with your patient population.
The FDA's guidance says advertising should be limited to the information prospective subjects need to determine their eligibility and interest. According to the guidance, ads should not:
Ads can state that participants will be paid, summarize the eligibility criteria, and describe the time commitment involved. For a complete checklist, read our clinical trial advertising guidelines for IRB submission.
Altruism is one of the strongest reasons clinical trial participants give for taking part. In CISCRP's 2025 Perceptions and Insights Study, 50% of participants said they joined to help advance science, and 40% said they joined to help others who may have the same disease or condition.
Ad copy that focuses on helping others with the same condition, or helping advance medical research, can be particularly effective.
Altruism isn't the only motivator, and it may not be the first one for patients who haven't joined a clinical trial yet. In a survey Antidote conducted of more than 4,000 patients, the top motivations for joining were:
You can speak to these benefits, as long as the wording follows FDA guidance. For example, an ad can mention a no-cost health examination, but it shouldn't promise "free medical treatment." It can say participants will be compensated, but it shouldn't emphasize the amount. It can describe a convenience, like completing the clinical trial from home, which is exactly what the ad below does while mentioning compensation without over-emphasizing it.
Worth testing: Because participants often cite altruism and prospective patients often cite personal benefit, submit both angles to your IRB and let the results show which one your patient population responds to.
General ads may bring in more clicks, but specific, targeted language can increase the likelihood that the patients who respond actually qualify. For sponsors, that difference shows up downstream: every unqualified response still takes time to pre-screen, and it doesn't move the clinical trial closer to its enrollment target.
Keep the copy short, but test variations that name one or two key inclusion or exclusion criteria, such as an age range or a diagnosis.
When possible, select ad photos that reflect a symptom of the condition or daily life with it. Thoughtful imagery can capture attention more effectively, and here it also acknowledges that for a condition like Alzheimer's disease, the caregiver may be the one who sees the ad and responds.
Before choosing imagery, research the demographics of your patient population. For example, according to the Lupus Foundation of America, lupus is two to three times more prevalent among women of color than among white women, so many of the images in this lupus campaign reflected that population.
Imagery matters even more on platforms with strict copy rules. Meta's advertising standards don't allow ads that assert or imply a viewer's personal attributes, including medical conditions. Copy like "Do you have lupus?" would be rejected, but imagery that reflects the patient community can still help the right patients recognize themselves in the ad.
Platforms such as Facebook, Instagram, and Google Ads support a range of formats, including stories, videos, carousels, and static graphics. Video can explain how a clinical trial works or share a patient's perspective. Carousels can walk through what participation involves step by step. Testing several formats is the most reliable way to learn what your audience engages with.
Paid search ads connect with patients who are already looking for clinical trial opportunities. Keywords such as "local clinical trials" and "[condition name] research" are typical starting points, though every campaign will have its own variations.
Use the same keywords in your ad copy that patients use in their searches. If you target keywords that aren't specific to clinical trials, make it clear in the ad that you're advertising a clinical trial. Otherwise, your budget may go to patients looking for something else, like general information about the condition.
Because every ad version needs IRB approval, adding new versions mid-campaign usually means another submission. Building variety into the first packet saves time:
Do clinical trial ads need IRB approval?
Yes. The FDA considers direct advertising for study subjects the start of the informed consent and subject selection process, so IRBs review recruitment ads before they're used.
Can clinical trial ads mention payment?
Yes. According to FDA guidance, ads may state that participants will be paid, but they shouldn't emphasize the payment or the amount, such as by using larger or bold type.
Can a clinical trial ad say "free treatment"?
No. FDA guidance says ads should not promise "free medical treatment" when the intent is only to say participants won't be charged for taking part in the clinical trial.
Can Facebook ads for clinical trials mention a medical condition?
Ads can name the condition being studied, but Meta's advertising standards don't allow ads that assert or imply a viewer has a medical condition. Copy like "Do you have asthma?" can be rejected under Meta's personal attributes policy.