One is NOT likely to feel a side effect as the test detects it early. While we're on azathioprine, you should be getting regular blood tests that include a Hepatic (Liver) Function Test which monitors your liver. If your liver enzymes skyrocket than that is a warning sign and the medication is either reduced in dosage until your numbers return to normal or discontinued. No actual damage is done at that point, it is just a warning sign.
Post Edited (iPoop) : 3/7/2018 8:36:50 AM (GMT-7)