Six months after American Home Products Corp. recalled Redux over safety concerns, the company is releasing new data suggesting that the diet pill is far less dangerous than previously thought. Last September, the U.S. Food and Drug Administration shocked doctors and diet-drug patients by reporting that about 30% of people using Redux, or "a combination of diet pills called fen-phen" suffered damage to their heart valves- a rate significantly higher than the 2% to 6% of heart valves problems found in the general population.