The most common form of fentanyl available is that gotten from medical patches – often bought on the black market. These prescription-grade patches are intended to be stuck onto the chest or upper arm to relieve pain for whom it is prescribed. However, there is more than one way to roll a die. Addicts have developed alternate ways of delivering the drug. Instead of sticking them as intended, the patches are cut open, and the fentanyl gel is squeezed out onto tin foil. Then it is smoked through a tube. Otherwise, the gel is injected into the bloodstream with a syringe. These are the most common and potent ways addicts use fentanyl. Illicit fentanyl comes in white powdery form and is administered in the same way as the prescription gel.