66-year-old woman is brought to the emergency department by her daughter because of a 2-day history of fever, flank pain, pain with urination, and nausea. Ten days ago, she was admitted to the hospital for similar symptoms and was diagnosed with acute pyelonephritis. She was discharged with instructions to take oral ciprofloxacin after a 3-day course of intravenous ciprofloxacin resulted in improvement. She also has hypertension, hyperlipidemia, and osteoporosis. Current medications also include alendronate, calcium carbonate, ezetimibe, hydrochlorothiazide, and simvastatin. Her temperature is 39.1°C (102.4°F), and blood pressure is130/80 mm Hg. The most likely cause of this patient's current condition is an interaction between her current oral antibiotic and which of the following medications?
B. Calcium Carbonate
67-year-old man with 3 months fatigue and shortness of breath. Vitals HR 90, RR 15, bp 150/98. PE conjunctival pallor. Labs: hb 8.5, hct 26%, MCV 90, RDW 14.4% (N=13-15%), Cr 2.9, Ferritin 144, Iron 24, Transferrin saturation 23% (N=20-50%). Besides iron supplementation, most appropriate tx?
B. Folic Acid
C. Granulocyte colony- stimulating factor