It is impossible for your healthcare provider to know whether or not you will develop insomnia while taking Wellbutrin SR. Also, in some cases, if a person does develop insomnia, it is difficult to know whether it is because of the condition or Wellbutrin SR itself. This is because insomnia is common in people with depression.
If you are taking Wellbutrin SR and insomnia becomes a problem, make sure to talk with your healthcare provider. There are other treatments that he or she may be able to recommend, such as adjusting your Wellbutrin SR dosage or trying another medicine.