I take nuvigil to stay awake. It's a narcolepsy med. There's also Provigil. You could also try drinking a strong tea. Man if I didn't have my finnegans wake up tea idk what I'd do.

It's made by a local tea place in my city but you can buy it online. I can't do carbonated drinks anymore cause of the IBS, but the tea + nuvigil works well.