Patient Case: LS
LS is a male patient aged 54 years who has been coming to your pharmacy for the past 5 years. He received a diagnosis of stage 3 colon cancer during a colonoscopy 2 months ago and has now completed surgical resection.
He comes to the pharmacy counter looking for a lotion recommended by his oncology team to prevent palmarplantar erythrodysesthesia, or hand-foot syndrome, an adverse effect (AE) of his chemotherapy. He states he will be initiating an adjuvant treatment in the coming weeks with capecitabine (Xeloda; Genentech, Inc) and oxaliplatin (Eloxatin; Sanofi-Aventis US LLC) in hopes of eliminating any residual disease. He also inquires whether there may be any drug interactions with his current medications list that he should be concerned about.

Medical History

LS most recently received a diagnosis of stage IIIB colon cancer and previously received diagnoses of gastroesophagealvreflux disease, hypertension, gout, and type 2 diabetes.

Current Medications

LS is taking the proton pump inhibitor (PPI) pantoprazole sodium (Protonix; Pfizer Inc) at 40 mg/d, lisinopril at 20 mg/d, atenolol (Tenormin; Almatica Pharma LLC) at 50 mg/d, naproxen sodium (Aleve; Bayer) at 500 mg/d, allopurinol (Zyloprim; Casper Pharma) at 450 mg/d, and metformin at 500 mg twice a day