Buy Brown Heroin Online Europe. Heroin is an opioid drug made from morphine. A natural substance is taken from the seed pod. Of the various opium poppy plants. Grown in Southeast and Southwest Asia. Mexico, and Colombia. Heroin can be a white or brown powder. However, It can also be a black sticky substance known as black tar heroin. Other common names for heroin include Big H, horse, hell dust, and Smack.