Synthroid (levothyroxine) is a brand-name drug that’s prescribed for hypothyroidism and thyroid cancer in adults and children. Synthroid comes as an oral tablet that’s typically taken once per day.

Take levothyroxine on an empty stomach at the same time every day. Avoid food and drink, including coffee, for at least an hour after taking levothyroxine. Switching brands or generics of ...

Using lean body mass (LBM) as a determinant for levothyroxine dosing provides a more consistent approach for managing hypothyroidism than more traditional methods like BMI, according to a study in the ...