Why do drugs hit some people harder? NIH launches blood study

NCT ID NCT02154022

First seen Nov 01, 2025 · Last updated Apr 25, 2026 · Updated 20 times

Summary

This study collects blood samples from people who have unexpected or severe side effects from drugs they are taking in other NIH trials. The goal is to measure drug levels in the blood to better understand why side effects happen in some people but not others. Up to 100 participants aged 2 and older will give blood samples. This is an observational study, not a treatment.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

Conditions

Explore the condition pages connected to this study.