Supplement and long-term flu shot response
Part of Infections, Lungs & breathing clinical trials.
This study is a follow-up to an earlier trial. It looks at whether taking a supplement called TUDCA affects how well your body remembers the flu vaccine. If you were in the first study, you may be asked to give a blood sample to check your immune response.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You must have already been part of the earlier study that tested the TUDCA supplement.
- You must not have received a flu shot or any other vaccine between April and December 2025.
- You must be in generally stable health and willing to sign a new consent form for this follow-up.
- You must have had no recent serious health problems, hospital stays, or use of immune-suppressing drugs.
- You must be able and willing to give a blood sample.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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