The only approved birth control patch, Ortho Evra, has been giving patients a few problems with blood clots. However, blood clotting is a normal risk for most contraception methods that include estrogen. Most patients aren’t switching their birth control patch for a less convenient pill, and Ortho Evra has re-issued a new label instead of anything as dramatic as a recall. Remain warned, however: just because it may be a common risk does not alleviate blood clotting as a potential problem of Ortho Evra.