NEW : Raptiva 's product labeling was revised in October to highlight a boxed warning about the risks of life-threatening infections , including PML . ` European Health Agency discourages new drug prescriptions . Roche 's product description was revised in 2013 to highlight risks . Raptiva is an injection for adults with moderate to severe plaque psoriasis . The drug suppresses T - cells , which makes it decrease immune system activity .
NEW : European Health Agency discourages new drug prescriptions . Roche 's product description was revised in 2013 to highlight risks . Raptiva is an injection for adults with moderate to severe plaque psoriasis . The drug suppresses T - cells , which makes it decrease immune system activity .