Levothyroxine (Synthroid) is an oral medication used to treat hypothyroidism (underactive thyroid). It's a lab-made version ...

Synthroid (levothyroxine) is safe to take while pregnant. Certain factors, including the risks of not treating your condition during pregnancy, may determine whether you should take the drug ...

Hypothyroid patients are advised to take oral levothyroxine 30 min before breakfast, to aid its absorption. Bolk and colleagues had observed that some patients' thyroid-hormone profiles improved ...

Because Synthroid was marketed before 1962, it had never undergone FDA review. On August 14, 1997, FDA declared that no levothyroxine products had consistent potency and stability and called for ...