Bolivia's coca campaign - in pictures

A Bolivian man holds up a coca seedling in the Amazon. Each farmer has a small plot of coca for personal consumption Photograph: David Mercado/Reuters

An advertisement for Vin Mariani – the original French coca wine – in Harper's Weekly, 1893 Photograph: Bettmann/Corbis

Workers chew coca leaves during a break inside a mine in Oruro, Bolivia Photograph: Dado Galdieri/AP

Bottles of soft drink sit stacked on a street in La Paz. Entrepreneur Victor Ledezma, a farmer from the Chapare region, runs a co-operative of coca growers that turns the leaf into legal products. Coca Colla is one of its initiatives that began distribution in 2010. The brand stands for the name of the plant and the name of the highland Colla people who have used it for centuries Photograph: Dado Galdieri/AP

Street vendors offer different coca-based products at their stand in La Paz Photograph: Aizar Raldes/AFP/Getty Images

Coca leaf tea is prepared in a cafe in La Paz Photograph: Evan Abramson/Bloomberg News/Getty Images

A Bolivian coca leaf producer waits for customers while resting on bags of the dried plant at the coca market in Villa Fatima, La Paz Photograph: Dado Galdieri/AP

Alcoholic products made from coca plants on display at a Bolivian coca growers' fair in La Paz Photograph: Martin Alipaz/EPA/Corbis

A dish with chocolates, biscuits and a bowl of flour – all made with coca leaves – are presented as new alternative products Photograph: Paolo Aguilar/EPA/Corbis

A Nasa Indian woman visits a stand advertising indigenous products, including Coca Sek cola during an artisanal fair in Bogota, Colombia. A group of Indians in southern Colombia have created a soft drink made from coca leaf extract and plan to market it as a locally produced alternative to Coca-Cola Photograph: Javier Galeano/AP

A La Paz shop display of throat lozenges, liqueur and salve made by the Bolivian Coincoca factory from coca leaves Photograph: David Mercado/Reuters

Bolivian investigator Maria Eugenia Tenorio sprinkles flour made of coca plant while she cooks at her home in La Paz. Tenorio has been supporting the use of coca plant as an essential ingredient in South America where the plant grows. She uses the coca flour to cook a variety of products and has cooked coca cake on demand for the president of Bolivia, Evo Morales Photograph: Carlos Cazalis/Corbis

A worker screws the cap on to a bottle of Coca Brynco, made by Soda Pacena in the company's bottling plant in El Alto, on the outskirts of La Paz. The soft drink is made with extracts of coca leaves Photograph: David Mercado/Reuters