Levothyroxine absorption will not be blocked if it is taken in the morning and calcium is taken after lunch and dinner
Since both hypothyroidism and iron deficiency anemia may coexist, additional thyroid function testing is recommended in patients treated concurrently with ferrous sulfate and L-thyroxine
7 mg/day [ 5 ]
Dangerous side effects or death can occur from the misuse of this medicine, especially if you are taking any other weight-loss medications or appetite suppressants
A study from the Journal of Nutrition used iron-deficient anemic rats and found they had lower basal
Even supplements like calcium or iron can affect absorption of levothyroxine
Learn the right way to take Synthroid® (levothyroxine sodium tablets, USP)
But, iron supplements can interfere with levothyroxine absorption, as well as the effectiveness of several other medications
Levothyroxine is usually taken once a day, ideally on an empty stomach, and at least 30 minutes to an hour before eating, drinking coffee, or taking calcium or iron supplements
Calcium salts as well as other metal containing containing substances such as iron, aluminum and magnesium can greatly decrease
People taking levothyroxine should also wait an hour or so before drinking their morning coffee
Levothyroxine (l-thyroxine, l-T4) is a drug of choice for treating congenital and primary hypothyroidism