Mountain Dew is a caffeinated, sweet, citrus-flavored soft drink produced by PepsiCo, Inc. The main formula was invented in Marion, Virginia, named and first marketed in Johnson City, Tennessee and Knoxville, Tennessee in 1948, then by the Minges family in Fayetteville, North Carolina and across the United States in 1964. When removed from its characteristic green bottle, Mountain Dew is bright yellow-green and semi-opaque.