Women who got low doses of Pfizer's Fablyn -- a drug candidate for osteoporosis -- were more likely to die within five years compared with those who received placebo, according to an analysis from FDA staff. Reviewers said the once-daily pill is effective for averting fractures in postmenopausal women with osteoporosis, but they are concerned that patients on Fablyn had more than twice the risk of developing blood clots. A panel of independent advisers is scheduled Monday to review the drug's safety.

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