A drinking device having a fluid-containing portion is provided. Communication elements are configured to receive audio signals from a far end communication device, and to receive text captions corresponding to the audio signals from a relay service for display by the communication device during a call. The invention also describes novel methods for delaying the onset of Alzheimer’s disease, for enhancing cognitive functions, for treating and preventing sleep apnea, for alleviating tobacco withdrawal syndrome, and for treating the dysfunctions of Huntington’s Disease by administering a therapeutically effective amount of at least one of the cholinesterase inhibitor compounds described herein.