Has anybody taken Azathioprine for lupus - how has it been for you - my son has been advised to take 50mg a day - we have read the info sheet - and find there are so many side-effects. Confused? and extremely worried... dont want my son to take it cos of side effects but want him to take it to control lupus... what do I do - my son is 23yrs - has had pericarditis for 3yrs - doc has linked it to lupus. Has recently been in unwell for 2 months - vomitting, diarreha, excessive weight loss, inflammation of stomach - docs have said it is lupus. Is currently on 20mg of prednisolone.. any advice?