When police make an arrest for drug charges, often the charges themselves have a way of multiplying. What could be seen as a single transgression - being found in possession of a controlled substance - can easily result in multiple charges. These could include charges for trafficking, conspiracy charges or charges for maintaining a home or vehicle as a place to hold or sell drugs.
Multiple varieties of drugs also result in multiple charges. When one is found in possession of a number of different controlled substances, he or she could be charged for possession for each one.