pharmacology – opioids therapeutics

A patient presents to the emergency department with abdominal pain and reports his pain is a 7/10. The patient indicates that the last time they had a bowel movement, and the patient responds 9 days ago. The patient is taking acetaminophen with codeine four times a day for lower back pain. Which of the following medications will best help the patient with this issue? 2pts
senna /-docusate
Polyethylene glycol
Prune juice
Fentanyl patch