 - There are no restrictions on the amount or types of prior therapy; eligible patients must be receiving ongoing chemotherapy that is planned to continue for at least one month following enrollment in this trial; any dose or schedule of chemotherapy administration is allowed as long as patients have self-reported taste disturbance that has either: 1 developed since the initiation of chemotherapy, or 2 a pre-existing, treatment-induced taste disturbance has subjectively worsened since initiating chemotherapy 