When Is A Medical Product Too Risky?

"Five drugs were pulled from pharmacy shelves in a recent one-year period, considered to be too risky by the Food and Drug Administration [FDA]...The string of five withdrawals has led some critics to contend that FDA is rushing to approve drugs that ultimately may prove dangerous to patients. Is FDA cutting corners when it comes to drug safety?" (FDA CONSUMER) This article states the FDA's position on this issue.