According to the consumer group Public Citizen, the diet drug Xenical™ should be banned due to its link to cancer.
Recent data has linked its use to precancerous lesions within the
colons of animals. More specifically, Xenical™ has been shown
to cause abnormal cell growth in the lining of the colon. Given that,
it seems appropriate to proceed with much caution. Interestingly, the
FDA just recently granted the pharmaceutical company GlaxoSmithKline
conditional approval to sell the drug without a prescription, assuming
certain undisclosed criteria are met. Public Citizen claims that the
FDA was aware of a breast cancer risk as well as possible colon lesions
with Xenical™ when it initially considered Xenical™,
but still approved it for human weight loss use. We’ll leave it up to
you to draw your own conclusion.
Source: Reuters. April 11, 2006.