Thyroid + Oral Contraceptives Interaction
Moderateinteraction on record
Description
Estrogen-containing oral contraceptives increase serum thyroxine-binding globulin, decreasing free levothyroxine. Patients without functioning thyroid glands may need increased thyroid doses.
Mechanism
Increased serum thyroxine-binding globulin from estrogen component, decreasing free levothyroxine
Source: NLP:thyroid, unspecified