Warheads (formerly Mega Warheads) is a brand of sour or tart candy manufactured by Impact Confections, located in Janesville, Wisconsin. They are marketed as an 'extreme' candy with an intense sour flavor. They have proven to be very popular, especially with young children; in 1999, Warheads were referred to as a "$40 million brand" (USD). The candy was invented in Taiwan in 1975 and was first imported to the United States in 1993 by The Foreign Candy Company of Hull, Iowa. Impact Confections acquired the brand in 2004.