An opened tin of Akta-Vite is available to the first subscribed respondent. (Victorian residents only please- then I can drop it over in the car.) This tin was purchased because of the retro packaging and a strong wish to wean off Nestlé products. Unfortunately, upon tasting, I realised that it does not really compare with Milo as a pre-slumber drink and the granules remind me of mouse droppings.
Snippets 
I grew up on that stuff. I remember it being quite nice (but that was probably before I tasted Milo). I was also fed carob instead of chocolate.
I hope you will keep both those traditions alive!
My granny used to keep this. She will be 102 in September. You should stick with it. Alternatively, bring it over on Saturday!
Chocolate vegemite – the smooth granules were intriguing in the tin – but couldn’t hold up to the Milo crunchy top in the final drink. Carob (Britany) on the other hand had no saving graces –
I just had a close up look at your open tin of Actavite – it’s not how I remember it at all….maybe I’m thinking of chocolate sprinkles.