New research by a Japanese team has revealed that people's long-term memories can be improved by taking a large dose of a dizziness medication that boosts the amount of histamine in the brain.

The conclusion of the research, which appeared in the American journal Biological Psychiatry on Tuesday, may have future implications for treating memory disorders such as Alzheimer's disease.

Histamine in the central nervous system is linked to learning and memory, with long-term memory defined as memory prior to 48 hours ago.