Breakthroughs require dedication from determined people, and we thank you.

Your time and commitment have made an important and immeasurable contribution to our efforts to change patients’ lives around the world.

What happens now?

Now that you have completed your participation in the clinical trial, we still need to wait until the other participants have also completed their part. Once everyone completes the study, your clinical data, combined with everyone else’s, will tell us if the study was successful or not.

These results will help determine what happens next with the study medicine or vaccine. For example, we may continue to research the study medicine or vaccine in future clinical trials. If enough data from the trials support a safe and effective potential new medicine or vaccine, an application will then be submitted to regulatory authorities such as the FDA for review and potential approval for use by patients. This process often takes years.

What happens now?

Happy couple walking outside | Pfizer clinical trials
Happy couple walking outside | Pfizer clinical trials

Stay connected

Pfizer Clinical Trial Alumni is a website for Pfizer clinical trial participants that helps you stay connected with your study and find information and resources related to your trial or condition, all by simply registering. With this website, we hope to improve health information equity, increase transparency, and positively impact each participant's ability to make informed healthcare choices after the study has ended.

Pfizer Clinical Trial Alumni is an opt-in website where you can:

  • Access your individual study data:
    On some studies, participants will be able to access a portion of their individual data about 12 months after completion of the clinical trial.
  • Learn about your study’s results:
    Plain Language Study Results Summaries are descriptions of the design and results of clinical trials, written in a simple, easy-to-understand format. These results will be available on the website so that you can see the final outcome of the study.
  • Find information:
    You can stay updated with the latest news, press releases, and other information related to your study.
  • Get connected:
    Find resources and advocacy groups connected to your condition.

Learn more about Pfizer Clinical Trial Alumni

Accessing Pfizer’s clinical trial results

Pfizer will provide your study doctor with information about your clinical trial’s results when all participants have completed the trial. We also post study results on and summaries of the results (also called Clinical Study Report Synopses) on

Additionally, for certain Pfizer-sponsored clinical trials, “Plain Language Study Results Summaries” can be found by visiting this page on and using the search function. These are non-technical descriptions of the design and results of our studies started in 2015 and later. The summaries are intended to make the study results more understandable and accessible to a general audience.


Accessing Pfizer’s clinical trial results

Woman in office looking at phone | Pfizer clinical trials
Woman in office looking at phone | Pfizer clinical trials

Frequently asked questions

How do I find out if the study medicine is now available for patients with my condition?

If health authorities such as the U.S. FDA approve the study medicine for use by patients with the condition, doctors and pharmacists will become aware that it can be prescribed. Pfizer typically releases public statements when its new medicines are approved, and we list our approved medicines on We also commonly create websites and other materials to inform healthcare professionals and patients about the medicines.

Keep in mind that study medicines typically go through a series of clinical trials before they are submitted to health authorities for approval. For a study medicine to be considered for approval, those clinical trials must collectively show that the study medicine is safe and effective. So, depending on the study you were part of, the study medicine may be very close to approval, approval may be years away, or approval may never come.

Click Learn More to view Pfizer’s list of approved products.

Learn More
Now that I have completed my clinical trial, can I enroll in another trial?

Yes, you may participate in another clinical trial if your participation in your previous study has ended and you meet the eligibility criteria for the new one.

To find a Pfizer clinical trial, use our Find a Trial search engine. To search for all registered clinical trials, regardless of the study sponsor, you may visit


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