Devices capable of deterring or preventing bulk extraction of drugs from, for example, drug-delivery systems are exemplarily disclosed. In one embodiment, such a device may include a package releasably retaining a drug and an agent. The agent is configured to suppress a physiological effect of the drug when the agent contacts the drug or is coadministered with the drug. The cell package is configured such that an amount of the drug is selectively releasable with respect to the agent when the package is operably proximate to an encoded key. The package, however, may be configured to impose a relatively high likelihood that either the drug will not be accessed or the drug will be contaminated by the agent if access to the contents of the package is sought without the use of an encoded key.
