Precise. Consistent. Trusted.

MAKE SURE IT'S SYNTHROID

America’s #1 prescribed branded hypothyroidism medication1,2*

*February 2019 through January 2025.

Tablets shown not actual size and may not represent exact color.

See precise dosing

Precise. Consistent. Trusted.

MAKE SURE IT'S SYNTHROID

America’s #1 prescribed branded hypothyroidism medication1,2*

*February 2019 through January 2025.

Tablets shown not actual size and may not represent exact color.

See precise dosing

Advice on treating your patients

Watch this video for advice on treating your patients with Synthroid. Dr. Frieze suggests educating patients on the importance of consistent therapy & precise dosing with Synthroid.

Dose calculator for adults

Use our dose calculator for adults who are otherwise healthy, non-elderly, and have been hypothyroid for a few months.

Learn how patients can pay less

Your Synthroid patients can pay just $25 a month for a 90-day prescription. Other pricing available for 30 and 60 days.