Imuran metabolizes in the body to 6MP. The half-life of the metabolized 6MP is 3 hours [longer when one has renal disease]. So the last dose of Imuran you took would be out of your body in 24 hours or less. HOWEVER, the effect of the Imuran on the body like lowering of white count, pancreas effect, anemia, hair loss, etc, is going to be longer. I know when my white count fell too low on Imuran, it took about
10 days for it to get back to normal. I hope this helps.
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