Choriogonadotropin alfa and Levothyroxine interaction
Choriogonadotropin alfa and Levothyroxine: the Choriogonadotropin alfa prescribing label flags this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Choriogonadotropin alfa (Pregnyl) label · effective 2025-12-02
Presence of uncontrolled non-gonadal endocrinopathies (e.g., thyroid, adrenal, or pituitary disorders).
Evaluate patients for uncontrolled non-gonadal endocrinopathies (e.g., thyroid, adrenal or pituitary disorders) and provide the appropriate specific treatment.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.