A compartmentalized baby bottle includes main and secondary interior compartments for housing and selectively introducing a soluble mix to a fluid, as needed by the caregiver. A plurality of conduits are formed along a bottom-most end of the main interior compartments for allowing the soluble mix to pass therethrough. A conduit-sealing mechanism is provided such that a care giver is permitted to selectively combine the mix and fluid together without prematurely exposing the mix. Advantageously, the conduit-sealing is selectively biased between open and closed positions for preventing the fluid and mix from undesirably mixing together until the care giver is ready to do same.