A 34-year-old woman with well-controlled hypothyroidism on levothyroxine starts a COC. What monitoring should be considered?...

Question

A 34-year-old woman with well-controlled hypothyroidism on levothyroxine starts a COC. What monitoring should be considered?

Accepted Answer

She should double her levothyroxine dose

Answer

No monitoring is needed

Answer

Thyroid function should be checked approximately 6 weeks after starting CHC, as oestrogen can increase thyroxine-binding globulin and alter levothyroxine requirements

Answer

Thyroid function should be checked daily

Answer

The COC is contraindicated with levothyroxine

uk-dfsrh MCQ (SBA): CHC and Levothyroxine Interaction Monitoring

A 34-year-old woman with well-controlled hypothyroidism on levothyroxine starts a COC. What monitoring should be considered?