Dementia is one of the largest health problems in the developed world. If the data/studies on citicoline were on solid grounds it would be widely recommended and used. I just did a literature search on the subject and most of the favorable results are published in minor journals, non-peer reviewed journals, "predatory" journals. So the answer is we don't know at this time. In ophthalmology in the USA we do not recommend it for optic nerve disease or health.
I've used it as a brain health supplement in capsule form, nothing negative to report.