User:Mr. Ibrahem/Birth control patch

Birth control patch, also known as contraceptive patch or the patch, is a patch applied to the skin to prevent pregnancy. Effectiveness is similar to combined birth control pills. Other benefits include the ability to determine when periods occur, improved acne, and less PMS. They are typically used for a week each for three weeks followed by a week off; though may be used for longer durations. After stopping fertility returns to normal in about 4 months.

Common side effects include headache, breast tenderness, and nausea. Use is not recommended in those with liver problems, migraines with aura, or at risk of blood clots. Those at risk of blood clots include those over 35 years old who smoke. It works less well in those who weigh more than 90 kg or have a BMI ≥ 30 kg/m2. They work by releases versions of the hormones estrogen and progestogen, which prevents ovulation and altering cervical mucus.

The birth control patch was approved for medical use in the United States in 2001 and Europe in 2002. Types include norelgestromin/ethinyl estradiol (Ortho Evra, Evra, Xulane) and levonorgestrel/ethinyl estradiol (Twirla). A generic version became available in 2014. They are used by about 0.4% of women not wanting to become pregnant in the United States. In the United States it costs about 35 USD per month as of 2024.