The Qnexa FDA approval is currently pending and the pharmaceutical company behind Qnexa (now called Qsymia), Vivus is revising their safety precautions for the FDA. Qnexa / Qsymia is not available for prescription now but if approved by the FDA, you could be prescribed and be able to buy Qnexa soon. The FDA will most likely give their final approval of it quite possibly July of this year 2012.