The third study involved healthy single men

The ray ban wayfarer third study involved healthy single men and women in Botswana ages 18 to 39. Half were asked to take Truvada once a day and the other half took a placebo. Over three years, those who got the medicine were 62% less likely to become infected than those who got the dummy pill, researchers from theU.S. Centers for Disease Control and Prevention and their collaborators reported. But the study had important limitations. Many volunteers dropped out, which prevented the researchers from determining whether the drug was protective for men and women independently, as it was in the trial involving married couples. The report also raised questions about Truvada's effect on bone mineral density, as the researchers observed a "small but significant decline." Other side effects, such as nausea, vomiting and dizziness, occurred more frequently in those oakley sunglasses online discount who took the drug instead of a placebo, but those symptoms lessened after the third month, the authors wrote. The other studies also noted side effects of gastrointestinal problems and fatigue during the first month. The pills were supplied byGilead Sciences Inc., the Bay Area firm that makes Truvada and is seeking fast-track approval from the FDA. For study researchers and many AIDS advocacy groups, the take-away message from the three trials was that Truvada could be an effective tool in the battle against AIDS, if used correctly. "Adherence matters," said Dr. Lynn Paxton, who coordinated the Botswana study at the CDC. "If you don't take the pill, it won't work, no matter what oakley sunglasses womens online sale else you do."