Coca Sek is a carbonated beverage that the Páez people of south-western Colombia began producing and selling in December 2005. The drink is based on coca leaves, which native Colombian peoples have been consuming for centuries to adapt to high altitudes and aid in manual labor.
- Brodzinsky, Sibylla. "Colombia's Indians bank on coca drink becoming the real thing", The Guardian, 14 December 2005. Retrieved 26 June 2013.
- Coca-Cola Vs Coca Sek in Colombia - By SERGIO DE LEON, May 10, 2007, Associated Press
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