Is that actually Vitavegamegamin?
Danged if I know. “Vegemite” is a yeast-based product which originated in Australia as a B-vitamin supplement. It is now produced by the Kraft conglomerate.
A friend in Australia sent me some, back when you could only get it there. It has a very salty flavor, but as I said above, not bad on toast with an egg.
It’s similar to Vitameatavegamin.