In response to negative publicity around high-fructose corn syrup, PepsiCo in 2009 released a limited-run production of Mountain Dew Throwback, a variation consisting of sugar in place of high-fructose corn syrup. Mountain Dew Throwback subsequently was re-released for brief periods (generally 8–12 weeks at a time), including a second wave from December 2009 to February 2010 and a third wave in the summer and fall of 2010. A fourth 8-week production run began in March 2011, before it became a permanent addition to the Mountain Dew flavor line-up.