Crack users tend to smoke the drug because that has a higher bioavailability than other routes typically used for drugs of abuse such as insufflation. Crack has a melting point of around 90 C (194 F), and the smoke does not remain potent for long. Please review the contents of the article and add the appropriate references if you can. Psychological. Crack cocaine as sold on the streets may be adulterated or "cut" with other substances mimicking the appearance of crack cocaine to increase bulk. This section possibly contains original research. A glass pipe used for smoking crack . As a guideline, Schedule I drugs carry a maximum 7-year prison sentence for possession for an indictable offense and up to life imprisonment for trafficking and production.