confusion between Wellbutrin SR and the new Wellbutrin XL

There will be some confusion between Wellbutrin SR and the new Wellbutrin XL.

Wellbutrin XL is a new form of bupropion for depression.

The difference is that Wellbutrin XL is given ONCE a day instead of BID. For example, Wellbutrin XL 300 mg/day is equivalent to Wellbutrin SR 150 mg BID.

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