Abstract: Dispenser kit for infants, which comprises a vial, optionally featuring specially contoured upper end and,(1) either of a pair of annular, resilient adapter/gaskets, or different size, snugly surrounding said upper end, or(2) an integral disk-like segment extending outwardly, either (1) or (2), serving to permit vial insertion into and location within any one of several standard, but different sized, nursing bottles, each having an associated, but threadingly, attachable and removable ring-cap/nipple assembly, and providing fluid tight relationship.