U.S. FDA

FDA adverse event reports, drug labels, recalls, and approval data.

Used for recall alerts on the scan results of matched products, the recalls pages, and drug labels in Ask when you have added medications.

U.S. National Library of Medicine

Registry of publicly and privately funded clinical studies conducted around the world.

Used for the trial registration numbers cited in research pages, such as the GLP-1 hub's landmark trials.

U.S. National Library of Medicine

Standardized nomenclature for clinical drugs across systems.

Used for medication search, including the names and codes of the medicines you add.

Regenstrief Institute

Universal codes for clinical lab tests and observations.

Used to identify and group lab results.

U.S. National Library of Medicine

Drug labels submitted to the FDA, in structured product label (SPL) format.

Used for the FDA drug labels cited as the source on interaction rows.

NCBI / National Library of Medicine

Index of 36+ million biomedical citations and abstracts.

Used for the studies cited on scan results, interaction rows, Ask answers and research pages. Ask also searches it live.

Jackson Laboratory

Standardized vocabulary of phenotypic abnormalities in human disease.

Used for symptom terms in search and symptom logging.