Complex sentence: Pramiracetam is thought to increase the long term memory of users and is used in the treatment of Alzheimer's Disease--although the mechanism underlying this response has not been fully elucidated, an increase in neuronal membrane fluidity has been posited as a potential mode of action.
Split into simpler sentences: Pramiracetam is thought to increase the long term memory of users and is used in the treatment of Alzheimer's disease. Although the mechanism underlying this response has not been fully elucidated, an increase in neuronal membrane fluidity has been posited as a potential mode of action.