It is possible that some of the medications you are taking may lead to the liver elevations. Abstaining from some of the medications, probably starting with the NSAID (Relafen), should be considered - as this medication can uncommonly elevate the liver enzymes.
I would also consider further testing of the liver. Blood tests to look for hepatitis as well as an ANA and ferritin level (to look for autoimmune causes and hemochromatosis respectively) can be considered.
An ultrasound to image the liver should also be done.
Serial monitoring of the liver enzymes can be considered, and a liver biopsy discussed if the levels continue to rise.
These options can be discussed with your personal physician, or in conjunction with a GI physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_
It can cause that, and even cause JAUNDICE!
Your doctor needs to read up, or learn how to use Google (took seconds to find this page):
http://cholesterol.emedtv.com/niaspan/niaspan-and-liver-problems.html
Just do a search on Google for: niaspan liver enzymes.