GLPwatch

Thyroid C-cell tumors

0 FAERS reports across 0 drugs

Last updated 2026-05-28 15:46 UTC

A thyroid C-cell tumor is a growth in the thyroid gland that starts in the C-cells, which are cells that normally make a hormone called calcitonin.

Plain-language definition of the term.

FDA labels for GLP-1 drugs including Mounjaro, Ozempic, Rybelsus, Saxenda, Trulicity, Victoza, Wegovy, Xultophy, and Zepbound mention thyroid C-cell tumors in their boxed warnings, contraindications, and warnings and precautions sections.

AI summary of the sources below.

FAERS report counts reflect voluntary adverse-event reports and cannot establish causation or true frequency; higher counts often track prescription volume. openFDA FAERS ↗

Reports by drug

No FAERS reports for this side effect in the current sample.

Mentioned in FDA labels

Research mentioning thyroid c-cell tumors (10)