Abstract: A vehicle composition in the form of a vesicular composition or a particular composition and, optionally, an active agent associated with the vesicle forming components or particles, and folate receptor alpha is used as a delivery system for the transport of components and/or active agents into the cerebrospinal fluid (CSF) and/or brain and/or central nervous system and/or spinal cord. The composition is used for treating of CSF or brain pertaining diseases, disorders or conditions, such as preventing or treating neurological or neurodegenerative diseases, disorders or conditions.