China (Mainland) 
quick details:
product name: vinpocetine;
cas: 42971-09-5;
einecs: 256-028-0
mf: c22h26n2o2;
mw: 350.45.
synonyms:
3a,16a-apovincaminic acid ethyl ester;(3a,16a)-eburnamenine-14-carboxylic acid ethyl ester;cavinton;ethyl apovincamin-22-oate;eburnamenine;eburnamenine-14-carboxylic acid ethyl ester;rgh-4405;vinpocetin;
vinpocetine is a cerebrovascular expansion drug and has a relatively stronger function than vincamine. it can selectively increase cerebral blood flow, enhance and improve brain oxygen supply, promote metabolism, enhance the capacity of deformation for red blood cells, reduce blood viscosity, inhibit platelet aggregation, improve tissue metabolism.
application
it has vasodilating, blood thinning, and memory-enhancing actions.
2. it acts as a cerebral stimulant and vasodilator.
3. it is used to treat arteriosclerosis.
4. it is very effective in curing dementia caused due to insufficient blood supply to the brain.
5. it interferes with cells' ability to synthesize dna and rna.
dosage
typical doses of vinpocetine range from 5 to 20 mg per day,but you will find 5 mg of vinpocetine and this is typically enough for most people to achieve their desired effects.