What is the primary purpose of changing contraceptive methods for women on TB therapy?

The primary purpose of changing contraceptive methods for women on TB therapy is primarily focused on minimizing drug interactions. Certain medications used in tuberculosis treatment, such as rifampicin, can significantly affect the efficacy of hormonal contraceptives. Rifampicin is known to induce the metabolism of hormonal contraceptives, thereby reducing their effectiveness and potentially leading to unintended pregnancies.

Moving to a non-hormonal method or an alternative contraceptive can help ensure that the chosen method remains effective in preventing pregnancy while the woman is undergoing TB treatment. This consideration is critical as the interaction between TB medications and hormonal contraceptives can compromise reproductive health and family planning. Therefore, in the context of TB therapy, it is essential to minimize drug interactions to maintain effective contraceptive control.