I have one of those fizzy orange vitamin tablets in water thesedays. I used to like my orange drink but, as has been said, they do have quite a bit of sugar. The fizzy tablets taste nice and are OK.
If you don't mind the early morning niff, try kippers
Smoked mackerel is good but you can also get a pack of smoked haddock fillets from places like farmfoods. Or you can make kedgeree with pearl barley rather than rice and cut down on the eggs used.