Methods, compositions and systems are provided for the non-invasive transnasal and transocular drug delivery to the central nervous system using eriodictyon fluid extract technology. By administration through the olfactory nerve or the optical nerve, the delivery of a biologically active substance of interest into the CNS and CSF can be enhanced through bypassing the blood-brain barrier. The invention involves the use of eriodictyon fluid extract as an excipient in compositions and systems for administering drugs to the olfactory or optical nerve.

 
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> Methods of increasing distribution of nucleic acids

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