Does Levothyroxine Interfere With Birth Control?

Does Levothyroxine Interfere With Birth Control? Does levothyroxine interfere with birth control? The good news is that THRT should not affect the effectiveness of birth control medication, Dr. Holtorf says. But thyroid disease can decrease fertility by affecting ovulation. Does levothyroxine interact birth control? Whether you’re taking hormone replacement therapy or popping a daily birth