A 37-year-old man who is morbidly obese (weight is 375 lb) is referred for weight-reducing surgery via gastric bypass. After hearing the risks of the surgery, the patient decides on a medical approach to treatment. He begins therapy with phentermine. Which of the following is the most important for both the patient and the family to know about this medication?

A 37-year-old man who is morbidly obese (weight is 375 lb) is referred for weight-reducing surgery via gastric bypass. After hearing the risks of the surgery, the patient decides on a medical approach to treatment. He begins therapy with phentermine. Which of the following is the most important for both the patient and the family to know about this medication?

A 17-year-old female with cystic fibrosis began taking a new medication to help loosen the mucus in her respiratory tract. The patient has not been adherent to her regimen of this drug, complaining that its smell makes her sick. Which is the most likely drug?

A 24-year-old man complains of recurring episodes of bloody diarrhea and abdominal pain. A flexible sigmoidoscopy reveals pseudopolyps and erythematous, friable mucosa. One of the drugs given to this patient is diphenoxylate. How could diphenoxylate help this patient?

A 52-year-old woman complains of dizziness when she looks up or rapidly changes the position of her head. These dizzy spells are often accompanied by nausea and vomiting. She complains that these episodes severely limit her ability to work and function normally. Which of the following medications would best help control her symptoms?

A 37-year-old man with a history of inguinal hernia undergoes elective surgical repair. The anesthesiologist is concerned about potential adverse effects of the inhalational agent chosen—halothane. The initial symptom of halothane's adverse reaction is which of the following?