Years ago I read about “Diapid” a nasal spray that worked like that.
Also, choline and lecithin.
Diapid had the unfortunate side effect of sometimes causing cardiac arrest in young, healthy people. The safe smart drugs are hydergine, centrophenoxine, ginkgo, vinpocetine, and memantine. See Dr. Ward Dean’s book “Mind Food and Smart Pills”. Hydergine has a side effect; it made the lab rats live longer than the control group!