Abstract: Teething devices include a flexible teething member having a hollow interior and partially defining a cavity. A swallow shield coupled with the flexible teething member has a hollow interior and partially defines the cavity. The swallow shield is configured to prevent swallowing of the teething device. A reservoir coupled with the swallow shield has a hollow interior partially defining the cavity. In some implementations an opening in the reservoir provides access to the cavity for introduction and removal of a liquid/gel therefrom, and a closure member is configured to couple with the reservoir in a liquid-tight configuration. In other implementations the cavity is permanently sealed with liquid/gel therein—the teething device including no opening to access the cavity. In implementations the flexible teething member forms a nipple shape. In other implementations it is shaped and sized to simultaneously contact all twenty deciduous teeth of an infant.