Jamie, my doctor's, particularly the rad doctor, told me the side effects can last up to 2 years. That the full use of all of my faculties, taste, swallowing, sore throat, deep voice, etc, could take up to 2 years to repair themselves as much as they will ever be able to do. So tell mom not to worry too much as she is rounding the corner and on her way to getting well. Will pray for her comfort and improvement soon.