The FDA recently added black box warnings to the $10 billion a year anemia drugs Procrit, Epogen and Aranse, citing an increased risk of death, stroke, heart attack and blood clots. The warning was added after some patients showed a higher risk of death and life-threatening side effects. These drugs are genetically engineered versions of the natural protein erythropoetin that increases the number of red blood cells. If you or a loved one has been prescribed one of these defective drugs for anemia, it is suggested that you consult your primary care physician in light of recent findings.