A consumer reads the following directions on a box of over-the-counter cold medicine: - Read the label to determine the appropriate dosage. Do not take more than the recommended dosage. - Do not combine cough and cold medicines together. Different medicines may contain the same active ingredient, so combining them may cause you to take too much of the same medication. - Do not combine cough and cold medicines with prescription medications. If you are taking prescription medications, do not take cough and cold medicine unless directed by your health care provider. - Do not drink alcohol while taking cold medicines that make you drowsy, as combining alcohol with cough and cold medicine can increase drowsiness. Based on these directions, in which of the following instances should the consumer consult with a health care provider?