Title says it all.
Searching found an Argentine firm (Janssen) that imports the drug Stugeron (Cinnarazine) to Argentina, but I saw no information there or anywhere else about availability or restriction.
Stugeron (and all the other brands of Cinnarazine) sell as "Venta bajo receta".
Which you'd guess means that it requires a prescription, but... it doesn't, unless you are trying to get your insurance to cover for it.
Drugs that say "Venta bajo receta archivada", on the other hand, do require a prescription in every case.