Question

identify any medication(s) the patient is currently taking that may interact with atorvastatin calcium (lipitor).
name edward castellanos
id #: j8671222
date reviewed include your initials.
medication name brand & generic dosage strength & frequency
naproxen bid
erythromycin 10 days
atorvastatin calcium 20mg po qd
allergies include reaction and date
medical history
arthritis (hands), peptic ulcer disease, glaucoma sinus infection (8/17/xx)
none; the patient is not currently taking any medications that may interact with atorvastatin calcium (lipitor)

Explanation:

Erythromycin can interact with atorvastatin calcium increasing the risk of myopathy/rhabdomyolysis due to inhibition of CYP3A4 enzyme which is involved in atorvastatin metabolism. Naproxen generally has no significant interactions with atorvastatin.

Answer:

Erythromycin