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.
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.
Hypothyroidism
SYNTHROID® (levothyroxine sodium) tablets for oral use is an L-thyroxine (T4) indicated in adult and pediatric patients, including neonates, as a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism.
Pituitary Thyrotropin (Thyroid Stimulating Hormone, TSH) Suppression
SYNTHROID is indicated in adult and pediatric patients, including neonates, as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer.
SYNTHROID is not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients, as there are no clinical benefits and overtreatment with SYNTHROID may induce hyperthyroidism.
SYNTHROID is not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis.
Thyroid hormones, including SYNTHROID, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects.
US-SYNT-220356