Does anyone else have an issue with extreme fatigue? The only med I'm taking is azasan (azathioprine, imuran). I weigh 112lbs, take 100mg at night cause it used to make me really nauseous. Been on it since mid December or so (I was around 135lbs then due to prednisone). Could the med be the cause? All my bloodwork has been fine, except my hemoglobin is down as always and I take a regular iron supplement in addition to others. I have such an issue waking up in the morning that its starting to interfere with my job and daily activities. All I want to do is sleep! I've no Crohn's symptoms whatsoever. This fatigue, however, is making me batty.