Abstract: The present invention comprises a novel in-bottle apparatus for adding flavorings to pre-packaged drinks. The apparatus, which is fully contained within a sealed drink bottle just below the bottle's lip, has a selector that allows the user to choose from a plurality of flavorings that can be released from a dispenser with the push of a button. The push button heads that make up the flavoring selector correspond to flavorings contained within the dispenser. Pushing one or more of the button heads dispenses flavoring into the primary drink contained within the drink bottle. The apparatus has a passageway on one side that allows the drink to be poured out of the bottle. The apparatus remains locked within the drink bottle's neck just below the bottle's lip before use, during use, while the drink is being consumed, and after the drink bottle is disposed of.