Heroin in Cape Town has become cheaper, more widely available and better marketed, experts have said in the wake of a damning UN report naming South Africa as a growing player in international drug trafficking.

Not only has the price of heroin dropped drastically in South Africa in the past few years - making it more accessible to teenagers and schoolchildren - it is also available in smaller and more affordable "fun-size" quantities.

A steady supply of the drug has been available in Cape Town for the first time, says Grant Jardine of the Cape Town Drug Counselling Centre.

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