Is it possible to improve memory with drugs in health people?

The development of general medication for memory loss in healthy people has proven difficult. The brain harbors a number of parallel memory systems, which further involve different and separate stages of processing. The action of these stages is modified partly by the same mediators having, however, different optimum levels in distinct processes. Thus for instance stress hormones, powerfully supporting storage in long-term memory, will in similar concentrations impair implicit memory. A number of memory-enhancing drugs are available, but they are usually effective only individually and in tailored doses.