According to statistics from criminal justice programs in Pakistan, up to one million people in the country are addicted to heroin.
Half of the heroin addicts use needles and inject the drug while using. Of the 500,000 who are heroin injectors, nearly 30 percent, or 150,000 people, are infected with HIV.
All of the heroin that is consumed in Pakistan is trafficked from neighboring Afghanistan. In 2013, the United Nations estimated that up to 5,500 tonnes of opium was cultivated in Afghanistan.
(How much heroin cost on the streets per gram)
Source: Pakistan has estimated one million heroin users,” The News International, December 15, 2013.