How do i lower my testosterone levels?

Go see your doctor!: Before lowering your t level, tell you doc why you want it lower. S/he can offer you several different options although neither lower t directly. Instead, birth control pills raise sex hormone binding globulin which lowers free t while spironolactone acts as an anti-androgen. So rather than focus on lowering t, focus on desired outcome. Hope that makes sense.

Why lower them?: As a female, one wonders why you would have testosterone levels measured at all? If this is a concern you should seek the advice of an endocrinologist that specializes in infertility.