Zapivon is simply the Russian word for "Things you drink your Vodka with", but is not addressed to the fruity flavours that already come as part of the bottle's ingredients. (i.e.: 40% vodka, 50% water, 10% lemon)
Consequently, Zapivon is solely the things you drink alongside the Vodka.
Drinking Cola (coke) with your Vodka is unlikely to be a good idea.
"Alex, don't forget to bring Zapivon with the Namirov."
"Huh? Vladi ya mitromem daber Ivrit! I'll bring Cola."