From various sources, including a recent CLE seminar:
Users of the Ortho Evra patch face an increased risk of blood clots compared with women using oral contraception.
Users of the Ortho Evra patch had two times the risk of clots compared with women taking birth-control pills.
The results of the two studies were made public by the patch's manufacturer, Ortho Women's Health & Urology. The company is owned by Johnson & Johnson.
