Simply add Lithobid CR to your Welbutrin.
Start at 300Mgs a day and in 3 weeks go get a Lithium Level test
done. If the test is below 0.8 then you need to jump up to 600mgs a day. Then test again. If still below 0.8 then jump to 900 a day.
Effective theraputic levels
of lithium are between 0.8 and 1.5
Lithium has no antidepressant effect below 0.8 blood
Above 1.5 can be toxic, which is why the testing is a smart thing to do.