A "final bottle" é algo que já vi algumas vezes mencionado e que aparentemente é algo carregado de açúcar, cafeína e alguns analgésicos, como o tramadol na altura em que era permitido.
Até pensava que era algo mais recente, mas já é uma discussão com pelo menos 1 década, já o Phinney falava nisso.
https://stevetilford.com/2013/10/14/racing-on-opiates/"In Velonation article I referenced above, Taylor says, “There is widespread use of finish bottles, which are just bottles of crushed up caffeine pills and painkillers. That stuff can make you pretty loopy, and that is why I have never tried it. I don’t even want to try it as I feel it dangerous.” So he pretty much confirms that if he would like to “try” the finish bottle, it would be at he disposal. So that is two “American Teams” that use finish bottles.
I remember last year in the Tour, when Chris Froome took two bottles with less than 10km left. (It might have been 2 years ago with Wiggins, my memory is fussy.) For sure last year, Richie Porte took a bottle illegally and gave it to Froome. I never could understand how that could make a difference so close to the end of a race, but this whole finish bottle thing explains a lot.
It sort of reminds me of the 90’s, with ‘Pot Belge’. I think the ingredients fluctuated some, but the main ones were caffeine, amphetamines, cocaine and heroin. I remember reading a excerpt of a French rider that had been busted and he said that the first time he tried Pot Belge was in Laurent Jalebert’s garage at a team party. For some reason that seemed so much worse. It doesn’t seem like you should be using the drugs you use for athletic competition when you are just out on Friday or Saturday night partying."