From the question on page 827

The patient subsequently proceeded to a right hemicolectomy. Intraoperative findings revealed no proximal queuing of faeces but multiple tablets. Analysis of her medications revealed this to be Adalat LA 30 (a long-acting version of nifedipine). Histology revealed the stricture to be adenocarcinoma.

Adalat LA is a prolonged-release film-coated calcium channel blocker that is widely prescribed for the treatment of hypertension and should be completely absorbed …